CN103500844A - Cylindrical multi-lug lithium ion battery and preparation method thereof - Google Patents
Cylindrical multi-lug lithium ion battery and preparation method thereof Download PDFInfo
- Publication number
- CN103500844A CN103500844A CN201310394151.5A CN201310394151A CN103500844A CN 103500844 A CN103500844 A CN 103500844A CN 201310394151 A CN201310394151 A CN 201310394151A CN 103500844 A CN103500844 A CN 103500844A
- Authority
- CN
- China
- Prior art keywords
- negative
- lithium ion
- ion battery
- plate
- cover 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.)
- Granted
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 56
- 238000004804 winding Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000003792 electrolyte Substances 0.000 claims abstract description 6
- 238000004146 energy storage Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000000926 separation method Methods 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- YWXYYJSYQOXTPL-SLPGGIOYSA-N isosorbide mononitrate Chemical compound [O-][N+](=O)O[C@@H]1CO[C@@H]2[C@@H](O)CO[C@@H]21 YWXYYJSYQOXTPL-SLPGGIOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a cylindrical multi-lug lithium ion battery and a preparation method thereof. The lithium ion battery comprises a cylindrical housing, a positive-electrode cover plate, a negative-electrode cover plate, a battery core wound body, and electrolyte. A protruding platform extending into the inner part of the cylindrical housing is provided on the negative-electrode cover plate. The battery core wound body is prepared by winding by using a positive-electrode sheet, a separation sheet, and a negative-electrode sheet. A plurality of lugs are arranged on the positive-electrode sheet and the negative-electrode sheet. The electrolyte is filled in the cylindrical housing. The plurality of lugs on the negative-electrode sheet extend to the center of the battery core wound body and are connected on the protruding platform. With the design structure, the plurality of lugs on the negative-electrode sheet are directly arranged on the protruding platform through a welding point, such that battery performance consistency and manufacturing yield are improved, internal space of the battery is saved, battery design capacity is improved, and cost is reduced. With the preparation process, no large-scale instrument and equipment is needed, and operation is simple. The method is suitable for automation transformation of production lines.
Description
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to a cylindrical multi-electrode ear lithium ion battery and a preparation method thereof.
Background
The lithium ion battery, especially the lithium ion battery using lithium iron phosphate as the positive electrode active material, has the advantages of high specific power, long cycle life, good safety performance, no pollution and the like, and is a key product for determining whether the current electric vehicle and the hybrid electric vehicle can be rapidly developed. In a series of lithium ion battery products, a cylindrical aluminum alloy shell battery attracts much attention, and the special appearance and material of the cylindrical aluminum alloy shell battery enable the appearance size of the cylindrical aluminum alloy shell battery to be highly stable, the high-current discharge performance to be more excellent, the safety performance to be higher and the shell corrosion resistance to be obviously improved.
At present, a plurality of manufacturing processes are available for a cylindrical aluminum alloy shell battery, but how to optimize the structure of the battery to improve various performances is always a difficult problem which troubles people at present, if an optimization mode adopting a multi-lug structure exists, the multi-lug structure is adopted, when high-rate discharge is carried out, because an electric core is provided with a plurality of lugs, an electronic transmission channel is greatly increased, the current density is reduced, the polarization is greatly reduced, the internal resistance of the battery can be reduced, the discharge performance and the safety performance of the lithium ion battery are improved, and the lithium ion battery is more suitable for being applied to power supplies such as electric automobiles, electric toys, model airplanes, electric tools and the like.
But the welding of the tabs has been a problem due to the structure of the tabs. Conventionally, as shown in fig. 1, a plurality of tabs are welded to a current collecting ring a ', and a diversion leading strip b' is provided on the current collecting ring a ', and then the diversion leading strip b' is welded on a negative electrode cover plate. However, this method has a number of drawbacks:
1) staff elements have a great influence on the product performance. Because a large number of tabs need to be welded on the collector ring through manual operation, part of the tabs are broken due to unskilled operation, so that the current carrying capacity of the tabs is different, and the final reaction is difficult to improve in terms of battery performance.
2) The welding difficulty of the collector ring is high. Because a large number of lugs are arranged in disorder, the collector ring can only be circular to take all the lugs into consideration. However, the circular collector ring has an arc, the welding head and the base which are welded by ultrasonic waves need to be provided with a certain arc to match with the arc of the collector ring, the welding head is greatly lost by the welding mode with the arc, the welding effect is poor, and the problems of insufficient welding, desoldering, missing welding and the like are easily caused.
3) The welding process is complicated. In the method, a large number of tabs are required to be welded on a collector ring, one end of a flow guide leading belt is welded on the collector ring, and the other end of the flow guide leading belt is welded on a cover plate. Because the multiple welding needs manual operation, the process is complex, and the process control is difficult.
4) The manufacturing cost is high. The structure also needs to purchase specially designed collecting ring fittings, flow guiding leading belts, ultrasonic welding machines and other materials and equipment, so that the manufacturing cost and the manufacturing process flow are increased.
5) Affecting the capacity of the battery. In the design of a cylindrical battery, the collector ring and the flow guide leading belt need to occupy a large amount of internal space, the occupied space in the height direction of the battery can reduce the width of a battery pole piece, and the design capacity of the battery is greatly reduced.
Therefore, the current design structure has the defects of high manufacturing cost, small battery design capacity, poor performance consistency, low product percent of pass and the like, and the service life of the battery pack after the batteries are grouped is further influenced. Therefore, it is highly desirable to have a suitable lithium ion battery structure to replace the current design structure.
Disclosure of Invention
The invention aims to provide a cylindrical multi-electrode ear lithium ion battery and a preparation method thereof, and aims to solve the technical problems of small design capacity and poor consistency in the existing lithium ion battery structure.
In order to achieve the above object, according to one aspect of the present invention, there is provided a cylindrical multi-polar ear lithium ion battery including: a cylindrical housing; the anode cover plate and the cathode cover plate are provided with a convex platform extending towards the inside of the cylindrical shell; the electric core winding body is positioned in the cylindrical shell and formed by winding a positive plate, a diaphragm and a negative plate, and a plurality of tabs are arranged on the positive plate and the negative plate; and an electrolyte filled in the cylindrical case; wherein, a plurality of tabs on the negative plate extend to the center of the electric core winding body and are connected on the protruding platform.
Further, a plurality of tabs connected to the projecting platforms are arranged in an overlapping manner.
Further, the protruding platform is riveted and fixed with the negative cover plate.
Further, the ion battery also comprises an insulating gasket arranged between the protruding platform and the negative electrode cover plate.
Further, the positive cover plate has an opening through which a plurality of tabs at the positive sheet end pass and extend outward along the peripheral side of the opening.
Furthermore, the periphery of the opening is provided with a positioning groove, and the positive cover plate further comprises a sealing cover matched with the positioning groove.
Further, a plurality of tabs are welded to the raised platform.
Further, the welding is energy storage welding.
Further, a sealing structure is formed between the cylindrical case and the positive electrode cover plate and between the cylindrical case and the negative electrode cover plate by laser welding.
According to another aspect of the present invention, there is provided a method for manufacturing a cylindrical multi-tab lithium ion battery, including preparing a positive plate having a plurality of tabs, a negative plate having a plurality of tabs, and a negative cover plate having a protruding platform, and directly welding the plurality of tabs of the negative plate end to the protruding platform.
The structure that the plurality of tabs on the negative plate are arranged on the collector ring and the collector ring is connected with the negative cover plate through the diversion leading tape in the prior art is abandoned, and the plurality of tabs on the negative plate are directly arranged on the protruding platform through one welding point, so that the consistency and the yield of the performance of the battery are improved, the internal space of the battery is saved, the design capacity of the battery is improved, and the cost is reduced. The preparation process does not need large-scale instruments and equipment, is simple to operate and is convenient for automatic modification of a production line.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view showing a connection structure of a slip ring and a guide belt adopted in the prior art;
fig. 2 illustrates a schematic structural view of a negative electrode cap plate according to an exemplary embodiment of the present invention;
fig. 3 illustrates a front view of a cylindrical multi-polar ear lithium ion battery according to an exemplary embodiment of the present invention;
fig. 4 shows a schematic structural view of a positive electrode cap plate of a cylindrical multi-polar ear lithium ion battery according to an exemplary embodiment of the present invention.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to solve the problems of complex process and poor battery performance consistency caused by the arrangement of a collector ring in the prior art, the invention provides a cylindrical multi-electrode ear lithium ion battery, as shown in fig. 2 and 3, the lithium ion battery comprises: a cylindrical case 10, a positive electrode lid plate 20 and a negative electrode lid plate 30, a core wound body 40, and an electrolyte filled in the cylindrical case 10. Wherein the negative electrode cover plate 30 is provided with a convex platform 31 extending towards the inside of the cylindrical shell 10; the electrical core winding body 40 is disposed in the cylindrical housing 10, the electrical core winding body 40 is formed by winding a positive plate, a separator and a negative plate, wherein the positive plate and the negative plate are respectively provided with a plurality of tabs 41, and the tabs 41 on the negative plate extend towards the center of the electrical core winding body 40 and are connected to the protruding platform 31.
The structure that a plurality of tabs 41 on the negative plate are arranged on the collector ring and the collector ring is connected with the negative cover plate 30 through the diversion leading tape in the prior art is abandoned, and the tabs 41 on the negative plate are directly arranged on the protruding platform 31 through a welding point, so that the consistency and the yield of the performance of the battery are improved, the space inside the battery is saved, the design capacity of the battery is improved, and the cost is reduced. The preparation process does not need large-scale instruments and equipment, is simple to operate and is convenient for automatic modification of a production line.
The electric core winding body 40 of the present invention is formed by winding a positive electrode sheet, a separator and a negative electrode sheet, the manufacturing method is conventional, and the tabs 41 located at the ends of the positive electrode sheet and the negative electrode sheet are generally unevenly distributed on the electric core winding body 40 formed by winding. In order to make the manufactured battery more excellent in performance, it is preferable that the plurality of tabs 41 after the formation of the electric core winding body 40 are uniformly distributed on the positive electrode sheet or the negative electrode sheet by design in the present invention.
According to an exemplary embodiment of the present invention, a plurality of tabs 41 connected to the protruding platform 31 are arranged to overlap. As shown in fig. 2 and fig. 3, one end of each tab 41 is connected to the negative plate, and the other end of each tab 41 is overlapped on the protruding platform 31, the arrangement mode enables all the tabs 41 on the negative plate to form a tab overlapping point at one end connected to the protruding platform 31, and the tab overlapping point is connected to the protruding platform 31, so that only one connection point exists between a plurality of tabs 41 and the protruding platform 31, thereby avoiding the problem of uneven contact resistance caused by a plurality of connection points formed by connecting a plurality of tabs 41 with a current collecting ring in the prior art, and simultaneously reducing the time and link of manually contacting the battery core, and obtaining the lithium ion battery with excellent performance consistency.
In order to make the structure of the lithium ion battery more firm, the protruding platform 31 is riveted with the negative cover plate 30. The present invention is preferably, but not limited to, the protruding platform 31 may be formed on the negative electrode cap plate 30 by injection molding. In order to insulate the negative electrode from the positive electrode, the lithium ion battery of the present invention further includes an insulating gasket 50 disposed between the protruding platform 31 and the negative electrode cap plate 30. The present invention preferably rivets the negative cover plate 30 to the insulating gasket, so that the part of the rivet protruding from the negative cover plate 30 forms a protruding platform 31 for fixing the plurality of tabs 41.
As shown in fig. 4, the positive electrode cover plate 20 is provided with an opening 21, and a plurality of tabs 41 at the positive electrode tab end pass through the opening 21 and extend outward along the peripheral side of the opening 21. The electrolyte is filled into the cylindrical case 10 through an opening 21 provided in the positive electrode cover plate 20, a positioning groove 22 is provided on the circumferential side of the opening, and the positive electrode cover plate 20 further includes a seal cover 23 used in cooperation with the positioning groove 22. In the present invention, preferably, a plurality of tabs 41 are led out through the opening 21 of the positive electrode cover plate 20 and then welded to the positive electrode cover plate 20, and then sealed by the sealing cover 23 and engaged with the positioning groove 22, and then sealed, and the top surface of the sealing cover 23 after sealing is flush with the top surface of the positive electrode cover plate 20.
According to another aspect of the present invention, there is provided a method for manufacturing a cylindrical multi-tab lithium ion battery, including preparing a positive plate having a plurality of tabs 41, a negative cover plate 30 having a protruding platform 31, and directly welding the plurality of tabs 41 of the positive plate end to the protruding platform 31.
Wherein the tab 41 can be connected to the protruding platform 31 by the conventional method, the present invention preferably adopts a welding manner, and further preferably adopts an energy storage welding manner. The energy-storage welding is a welding technique in which electric charge is stored in a capacitor with a certain capacity, so that a welding torch discharges with high-frequency pulses 2-3 times per second through a welding material and a workpiece instantaneously, and the welding material and the workpiece are metallurgically bonded at an instantaneous contact point.
In the prior art, two methods of ultrasonic welding and laser welding are mainly adopted, for example, when a collector ring process is adopted in the prior art, a plurality of tabs 41 are welded on the edge of the collector ring through ultrasonic welding, one end of a flow guide lead is also welded on the collector ring through ultrasonic welding, and the other end of the flow guide lead can be welded on the anode cover plate 20 or the cathode cover plate 30 through ultrasonic welding or laser welding. However, the aluminum residues are splashed by laser welding, so that pollutants are brought into the battery core. And the energy storage welding has the advantages that the ultrasonic welding does not have: 1) large-area high temperature cannot be generated: because the energy storage welding is in a welding process of forming a surface through spot welding, the method has the greatest advantage that local hard damages of workpieces which cannot be welded at high temperature and are fearless of thermal deformation annealing can be repaired; 2) the welding point can reach metallurgical bonding: the welding torch for energy storage welding can reach 1000 ℃ through the instant temperature between the welding material and the workpiece, so that the welding point can achieve the effect of metallurgical bonding, the welding is firmer, and the welding torch is more reliable than the ultrasonic welding or laser welding in the prior art.
The welding process of the present invention is generally as follows: firstly, the electric core winding body 40 is put into the cylindrical shell 10, all the tabs 41 at the negative plate end are bent towards the central position of the electric core winding body 40, so that the tabs 41 form tab overlapping points on the protruding platform 31 of the negative cover plate 30, then a welding needle (generally red copper) for energy storage welding extends into the electric core winding body 40 from the central opening 21 of the positive cover plate 20, the welding needle head props against the tab overlapping points at the negative end, the electric core winding body is vertically placed for energy storage welding, and the tab overlapping points and the central position of the protruding platform 31 of the negative cover plate 30 are welded together. Wherein, the accuracy is guaranteed in the welded position, and the welding can be realized through a proper tool clamp.
The cylindrical case 10 and the positive electrode lid plate 20, and the cylindrical case 10 and the negative electrode lid plate 30 of the present invention are sealed by laser welding.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the structure that the plurality of tabs on the negative plate are arranged on the collector ring and the collector ring is connected with the negative cover plate through the diversion leading tape in the prior art is abandoned, and the plurality of tabs on the negative plate are directly arranged on the protruding platform through one welding point, so that the consistency and the yield of the performance of the battery are improved, the internal space of the battery is saved, the design capacity of the battery is improved, and the cost is reduced. The preparation process does not need large-scale instruments and equipment, is simple to operate and is convenient for automatic modification of a production line.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A cylindrical multi-polar ear lithium ion battery, comprising:
a cylindrical case (10);
the battery comprises a positive electrode cover plate (20) and a negative electrode cover plate (30), wherein the negative electrode cover plate (30) is provided with a convex platform (31) extending towards the inside of the cylindrical shell (10);
the electric core winding body (40) is positioned in the cylindrical shell (10), the electric core winding body (40) is formed by winding a positive plate, a diaphragm and a negative plate, and a plurality of tabs (41) are arranged on the positive plate and the negative plate; and
an electrolyte filled in the cylindrical case (10); wherein,
the plurality of tabs (41) on the negative plate extend towards the center of the electric core winding body (40) and are connected to the protruding platform (31).
2. The lithium ion battery according to claim 1, characterized in that the plurality of tabs (41) connected to the protruding platform (31) are arranged in an overlapping manner.
3. The lithium ion battery according to claim 1, characterized in that the protruding platform (31) is riveted to the negative cover plate (30).
4. The lithium ion battery according to claim 3, further comprising an insulating gasket (50) disposed between the protruding platform (31) and the negative electrode cover plate (30).
5. The lithium ion battery according to claim 1, wherein the positive electrode cover plate (20) has an opening (21), and the plurality of tabs (41) at the positive electrode tab end pass through the opening (21) and extend outward along the peripheral side of the opening (21).
6. The lithium ion battery according to claim 5, wherein a positioning groove (22) is provided on the periphery of the opening (21), and the positive electrode cover plate (20) further comprises a sealing cover (23) cooperating with the positioning groove (22).
7. The lithium ion battery according to claim 1, characterized in that the plurality of tabs (41) are welded on the protruding platform (31).
8. The lithium ion battery of claim 7, wherein the weld is an energy storage weld.
9. The lithium ion battery according to claim 1, wherein a seal structure is formed between the cylindrical case (10) and the positive electrode lid plate (20) and between the cylindrical case (10) and the negative electrode lid plate (30) by laser welding.
10. A method for preparing a cylindrical multi-polar-lug lithium ion battery comprises the steps of preparing a positive plate with a plurality of lugs, a negative plate with a plurality of lugs and a negative cover plate (30) with a protruding platform (31), and is characterized in that the lugs (41) at the end of the negative plate are directly welded on the protruding platform (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310394151.5A CN103500844B (en) | 2013-09-03 | 2013-09-03 | cylindrical multi-lug lithium ion battery and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310394151.5A CN103500844B (en) | 2013-09-03 | 2013-09-03 | cylindrical multi-lug lithium ion battery and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103500844A true CN103500844A (en) | 2014-01-08 |
| CN103500844B CN103500844B (en) | 2016-09-14 |
Family
ID=49866029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310394151.5A Expired - Fee Related CN103500844B (en) | 2013-09-03 | 2013-09-03 | cylindrical multi-lug lithium ion battery and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103500844B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091912A (en) * | 2014-07-22 | 2014-10-08 | 合肥国轩高科动力能源股份公司 | Multi-tab lithium battery core and welding method of multi-tab lithium battery tab |
| CN106207272A (en) * | 2016-08-31 | 2016-12-07 | 江苏金阳光新能源科技有限公司 | A kind of method realizing cylinder three lug lithium ion battery quick block weldering |
| CN107394097A (en) * | 2017-07-14 | 2017-11-24 | 江苏春兰清洁能源研究院有限公司 | A kind of pinpoint method in multi pole ears winding type lithium ion battery pole ear position |
| CN111430588A (en) * | 2020-03-03 | 2020-07-17 | 珠海冠宇电池股份有限公司 | Shell assembly of button cell, button cell and electronic product |
| CN116417689A (en) * | 2023-05-16 | 2023-07-11 | 淮北市千锂鸟新能源科技有限公司 | Manufacturing method of multi-pole cylindrical lithium ion battery and lithium ion battery |
| WO2023189939A1 (en) * | 2022-03-31 | 2023-10-05 | パナソニックＩｐマネジメント株式会社 | Power storage device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0771040A2 (en) * | 1995-09-27 | 1997-05-02 | Sony Corporation | High-capacity secondary battery of jelly roll type |
| JPH10261439A (en) * | 1997-03-19 | 1998-09-29 | Sanyo Electric Co Ltd | Lithium secondary battery |
| US6071638A (en) * | 1996-07-30 | 2000-06-06 | Saft | Cylindrical cell having current output terminal connected to electrode by conductive blade members |
| JP2001118561A (en) * | 1999-10-19 | 2001-04-27 | Sony Corp | Current-collecting structure and secondary battery |
| JP2001148238A (en) * | 1999-11-19 | 2001-05-29 | Sony Corp | Secondary battery |
| US20020015892A1 (en) * | 1998-06-02 | 2002-02-07 | Kenshin Kitoh | Lithium secondary battery |
| JP2002134157A (en) * | 2000-10-25 | 2002-05-10 | Toyota Motor Corp | Battery and producing method thereof |
| CN101882683A (en) * | 2009-05-07 | 2010-11-10 | 深圳市比克电池有限公司 | Cylindrical cell |
| CN102110852A (en) * | 2009-12-24 | 2011-06-29 | 上海航天电源技术有限责任公司 | Cylindrical lithium ion battery structure suitable for series connection and parallel connection |
-
2013
- 2013-09-03 CN CN201310394151.5A patent/CN103500844B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0771040A2 (en) * | 1995-09-27 | 1997-05-02 | Sony Corporation | High-capacity secondary battery of jelly roll type |
| US6071638A (en) * | 1996-07-30 | 2000-06-06 | Saft | Cylindrical cell having current output terminal connected to electrode by conductive blade members |
| JPH10261439A (en) * | 1997-03-19 | 1998-09-29 | Sanyo Electric Co Ltd | Lithium secondary battery |
| US20020015892A1 (en) * | 1998-06-02 | 2002-02-07 | Kenshin Kitoh | Lithium secondary battery |
| JP2001118561A (en) * | 1999-10-19 | 2001-04-27 | Sony Corp | Current-collecting structure and secondary battery |
| JP2001148238A (en) * | 1999-11-19 | 2001-05-29 | Sony Corp | Secondary battery |
| JP2002134157A (en) * | 2000-10-25 | 2002-05-10 | Toyota Motor Corp | Battery and producing method thereof |
| CN101882683A (en) * | 2009-05-07 | 2010-11-10 | 深圳市比克电池有限公司 | Cylindrical cell |
| CN102110852A (en) * | 2009-12-24 | 2011-06-29 | 上海航天电源技术有限责任公司 | Cylindrical lithium ion battery structure suitable for series connection and parallel connection |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091912A (en) * | 2014-07-22 | 2014-10-08 | 合肥国轩高科动力能源股份公司 | Multi-tab lithium battery core and welding method of multi-tab lithium battery tab |
| CN106207272A (en) * | 2016-08-31 | 2016-12-07 | 江苏金阳光新能源科技有限公司 | A kind of method realizing cylinder three lug lithium ion battery quick block weldering |
| CN106207272B (en) * | 2016-08-31 | 2018-09-25 | 江苏金阳光新能源科技有限公司 | A method of realizing the quick block weldering of three lug lithium ion battery of cylinder |
| CN107394097A (en) * | 2017-07-14 | 2017-11-24 | 江苏春兰清洁能源研究院有限公司 | A kind of pinpoint method in multi pole ears winding type lithium ion battery pole ear position |
| CN111430588A (en) * | 2020-03-03 | 2020-07-17 | 珠海冠宇电池股份有限公司 | Shell assembly of button cell, button cell and electronic product |
| CN111430588B (en) * | 2020-03-03 | 2023-08-22 | 珠海冠宇电池股份有限公司 | Shell assembly of button cell, button cell and electronic product |
| US12107286B2 (en) | 2020-03-03 | 2024-10-01 | Zhuhai Cosmx Battery Co., Ltd. | Housing assembly of button cell, button cell and electronic product |
| WO2023189939A1 (en) * | 2022-03-31 | 2023-10-05 | パナソニックＩｐマネジメント株式会社 | Power storage device |
| CN116417689A (en) * | 2023-05-16 | 2023-07-11 | 淮北市千锂鸟新能源科技有限公司 | Manufacturing method of multi-pole cylindrical lithium ion battery and lithium ion battery |
| CN116417689B (en) * | 2023-05-16 | 2023-11-03 | 淮北市千锂鸟新能源科技有限公司 | Manufacturing method of multi-pole cylindrical lithium ion battery and lithium ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103500844B (en) | 2016-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103500844B (en) | cylindrical multi-lug lithium ion battery and preparation method thereof | |
| CN103227307B (en) | Rectangular secondary cell | |
| JP6208687B2 (en) | Cylindrical secondary battery and manufacturing method thereof | |
| CN102136608B (en) | Sealed battery cell and method of producing the same | |
| US8409737B2 (en) | Sealed battery cell and method of manufacturing the same | |
| JP2020074286A (en) | Secondary battery | |
| US9095924B2 (en) | Welded construction and resistance welding method | |
| JP5470142B2 (en) | Secondary battery and manufacturing method thereof | |
| US10147925B2 (en) | Square secondary battery | |
| CN105009326B (en) | Charge storage element | |
| CN106025119A (en) | Prismatic secondary battery | |
| CN109326746B (en) | Battery top cover rubberizing structure and rubberizing method thereof | |
| CN102347512A (en) | Large-capacity lithium ion battery | |
| JP5198134B2 (en) | Method for manufacturing cylindrical battery | |
| JP2002270148A (en) | Manufacturing method of cylinder sealing type lithium secondary battery and lithium secondary battery | |
| CN117543139A (en) | Current collecting disc, battery unit, battery and electricity utilization device | |
| CN115347329A (en) | Novel cylindrical lithium battery busbar structure, battery cell and manufacturing process thereof | |
| JP2016091670A (en) | Cylindrical secondary battery | |
| CN203800137U (en) | Nickel-metal hydride (Ni-MH) battery | |
| CN211208492U (en) | Battery cover plate of flat-film high-explosion-point-value explosion-proof film | |
| JP2002170531A (en) | Tubular secondary battery | |
| CN103915584B (en) | Lithium ion battery end cap, lithium ion battery and production method thereof | |
| KR20180113857A (en) | Rechargeable Mattery And Rechargeable battery Module Using The Same | |
| WO2014068869A1 (en) | Storage battery module | |
| CN201017924Y (en) | Lithium battery using copper pole ear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 Termination date: 20210903 |