CN106848385A - A kind of power soft bag lithium ionic cell of multireel cored structure - Google Patents
A kind of power soft bag lithium ionic cell of multireel cored structure Download PDFInfo
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- CN106848385A CN106848385A CN201710179647.9A CN201710179647A CN106848385A CN 106848385 A CN106848385 A CN 106848385A CN 201710179647 A CN201710179647 A CN 201710179647A CN 106848385 A CN106848385 A CN 106848385A
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- Prior art keywords
- battery core
- nickel
- battery
- aluminium
- multireel
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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
- H01M10/052—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
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- 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
- H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
-
- 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
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- 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)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a kind of power soft bag lithium ionic cell of multireel cored structure, single only naked battery core is wound into by positive plate, barrier film, negative plate, many naked battery cores are stacked together with parallel way again, then aluminium strip and aluminium pole ears weld together, and copper strips is together with nickel plating copper polar ear or nickel tab welding.It is stacked together with parallel way using many naked battery cores, it is described by positive plate, negative plate, membrane winding into naked battery core aluminium strip, copper strips in the same side of battery core.Compared with prior art, the advantage of the invention is that：One can be the high rate during charging-discharging for improving takeup type structural polymer lithium battery；The characteristics of next remains the process is simple of coiling type lithium battery, production efficiency is high；Three is the nickel resources for having saved preciousness；Four is to improve soldering tip and blade life, reduces cost, guarantee welding stability, uniformity.
Description
Technical field
The present invention relates to the power Soft Roll ion of a kind of Soft Roll polymer Li-ion battery, especially a kind of multireel cored structure
Battery.
Background technology
In recent years, because lithium ion battery has operating voltage high, energy density is big, memory-less effect, have extended cycle life and
Pollution-free the advantages of, makes its application field constantly expand, while also being improved constantly to the requirement of its various aspects of performance.With lithium battery
Application in daily life, people gradually understand and have affirmed that lithium battery has superiority with respect to other system batteries, to lithium
The requirement and expectation of battery also reflect raising.Initial capacity type lithium battery is extensively with for mobile phone, notebook computer, number
In the portable electric appts such as camera.The power lithium battery liquid of present high current high-multiplying power discharge starts to be applied to electronic work
In the electronic equipment inseparable with people's life such as tool, battery truck, mine lamp, logistic car, passenger car.
It is well known that making the universal method of the naked battery core of dynamic type polymer lithium battery now using stacked：It is die cut
Good positive/negative plate and barrier film is stacked together, is characterized in the small suitable heavy-current discharge of the internal resistance of cell for making, and has the disadvantage to fold
Blade technolgy is complicated, lamination efficiency is very low.If improving production capacity needs to buy substantial amounts of laminating equipment, the structure limits poly-
The production capacity lifting of compound lithium battery；On the other hand, using nickel strap as negative electrode lug, one is nickel is dilute your gold to present technical scheme
Category, production cost is higher；Two be nickel electric conductivity also be inferior to copper product；Three is the Mohs' hardness of nickel also above copper polar ear, film-making
When it is big to ultrasonic welding system soldering tip, the abrasion of tab cutting knife.
The content of the invention
In view of this, the present invention provides a kind of power soft bag lithium ionic cell of multireel cored structure, can substantially improve volume
Wound structure lithium battery high rate during charging-discharging, improve production efficiency, while using copper strips and nickel plating copper polar ear or nickel lug,
Soldering tip, blade life are improve, the nickel resources of preciousness have been saved.
To achieve these goals, concrete technical scheme of the invention is as follows：
A kind of power Soft Roll ion battery of multireel cored structure, single only naked battery core is wound into by positive plate, barrier film, negative plate, many
Stacked together with parallel way, then aluminium strip and aluminium pole ears weld together naked battery core, copper strips and nickel plating copper polar ear or nickel
Tab welding is together.It is stacked together with parallel way using many naked battery cores, it is described by positive plate, negative plate, membrane coil
Aluminium strip, the copper strips of the naked battery core being coiled into are in the same side of battery core.
The aluminium strip, copper strips are fixed at the uncoated foil of strip collector by ultra-sonic welded mode.
Described naked battery core is connected in parallel by overlapped way, aluminium strip（0.1 ~ 0.15mm of thickness）, copper strips (thickness 0.05
~ 0.1mm) in the same side of battery core, ultra-sonic welded mode and aluminium pole ears (0.1 ~ 0.3mm of thickness), nickel plating copper polar ear after then leading to
Or nickel lug（0.1 ~ 0.3mm of thickness）Weld together.
Using bare electric core winding formula structure, multi-winding-core parallel way structure stacked together can solve winding to the present invention
Formula structure battery core internal resistance problem high, while substantially increasing naked battery core production efficiency；Using copper strips, nickel plating copper polar ear or nickel lug
If can with reduces cost, the stability for reducing the internal resistance of cell, improving soldering tip and blade life, improve welding, reduce lug and cut out
Cut burr, improve the heavy-current discharge performance of battery.Compared with prior art, the advantage of the invention is that：One can be to improve
The high rate during charging-discharging of takeup type structural polymer lithium battery；Next remains the process is simple of coiling type lithium battery, life
The characteristics of producing efficiency high；Three is the nickel resources for having saved preciousness；Four is to improve soldering tip and blade life, reduces cost, guarantee weldering
Connect stability, uniformity.
Brief description of the drawings
Fig. 1 is positive plate structural representation of the invention；
Fig. 2 is negative plate structure schematic diagram of the invention；
Fig. 3 is the naked core strueture schematic diagram of monomer in the present invention；
Fig. 4 is battery core pack arrangement schematic diagram in the present invention；
Fig. 5 is positive/negative ear structure schematic diagram in the present invention；
Fig. 6 is positive/negative lug welding structure schematic diagram in the present invention；
Fig. 7 is the battery core pack arrangement schematic diagram that present invention welding is completed；
Fig. 8 is to be schemed with the life span comparison of nickel strap using copper strips in the present invention；
Fig. 9 is the internal resistance comparison diagram using copper strips and nickel strap in the present invention；
Figure 10 is the production efficiency comparison diagram of winding-structure of the present invention and existing lamination techniques；
Figure 11 is multireel cored structure of the present invention and laminated cell heavy-current discharge performance comparison diagram.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, invention is described in detail.
Reference picture 1 and Fig. 2, positive plate 4 is by the first aluminium strip 5 aluminium foil gutter uncoated by being ultrasonically welded within collector
3 are made；Negative plate 7 is made up of the first copper strips 8 by being ultrasonically welded within the uncoated Copper Foil gutter 6 of collector.
As shown in Figure 3 and Figure 4, the naked battery core 1 of monomer be positive plate 4, negative plate 7, barrier film 11 wind after be made, the first aluminium
The 5, first copper strips 8 of band is distributed in the same side of naked battery core 1；Multiple naked battery cores 1 are fixed as battery core according to parallel way is stacked together
Bag 2, some first aluminium strips 5 arranged side by side constitute the second aluminium strip 12, and similarly, some first copper strips 8 arranged side by side constitute the second copper strips 13.
As shown in Figures 5 to 7, by ultra-sonic welded the second aluminium strip 12 and aluminium pole ears 9（Comprising CPP glue 9a）It is welded on one
Rise, aluminium pole ears are placed on the intermediate layer of each layer of the second aluminium strip 12, cross ultra-sonic welded the second copper strips 13, nickel plating copper polar ear or nickel lug
10 (include CPP glue 10a) weld together, and nickel plating copper polar ear or nickel lug are placed on the intermediate layer of each layer of the second copper strips 13, finally
The battery core bag 2 that the welding of formation is completed.
Fig. 8 is to be schemed with the life span comparison of nickel strap using copper strips in the present invention, and using copper strips, the soldering tip life-span is greatly carried
Rise.
Fig. 9 is the internal resistance comparison diagram using copper strips and nickel strap in the present invention, using the 10Ah battery cores of 4 core parallel-connection structures,
Nickel strap/copper tape dimensions are 0.1*8mm (thickness * width), and the copper strips of same size is than nickel strap internal resistance reduction 0.22m Ω.
Figure 10 is the production efficiency comparison diagram of winding-structure of the present invention and existing lamination techniques, and laminating equipment folds a battery
Efficiency is 90 seconds/, and it is 8 seconds/that winding apparatus wind an efficiency for battery, if 4 coiled battery parallel connections, battery
Production efficiency can improve 64%.
Figure 11 is multireel cored structure of the present invention and laminated cell heavy-current discharge performance comparison diagram, using the core knots of 10Ah 4
Structure battery core and laminated cell multiplying power discharging Data Comparison, wind high current multiplying power and laminated batteries performance no significant difference, explanation
Multireel cored structure of the invention is practical, with the ability for substituting laminated batteries.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art in the technical scope of present disclosure, technology according to the present invention scheme and its
Inventive concept is subject to equivalent or change, should all be included within the scope of the present invention.
Claims (3)
1. the power Soft Roll ion battery of a kind of multireel cored structure, it is characterised in that including：Battery core bag（2）, aluminium pole ears（9）, plating
Ambrose alloy lug or nickel lug（10）；
The battery core bag（2）By some naked battery cores（1）It is stacked together according to parallel way；
The naked battery core（1）By positive plate（4）, negative plate（7）, barrier film（11）, be wound into the first aluminium strip（5）, the first copper strips（8）
In the same side；
The battery core bag（2）The second aluminium strip（12）And aluminium pole ears（9）Connection, battery core bag（2）The second copper strips（13）And nickel plating
Copper polar ear or nickel lug（10）Connection.
2. the power Soft Roll ion battery of the multireel cored structure according to right 1, it is characterised in that the first aluminium strip（5）Pass through
It is ultrasonically welded within uncoated aluminium foil gutter（3）, the first copper strips（8）By being ultrasonically welded within uncoated Copper Foil gutter
（6）.
3. the power Soft Roll ion battery of the multireel cored structure according to right 1 or 2, it is characterised in that the battery core bag（2）
The second aluminium strip（12）And aluminium pole ears（9）It is ultrasonically welded together, battery core bag（2）The second copper strips（13）With nickel plating copper-base
Ear or nickel lug（10）It is ultrasonically welded together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710179647.9A CN106848385A (en) | 2017-03-23 | 2017-03-23 | A kind of power soft bag lithium ionic cell of multireel cored structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710179647.9A CN106848385A (en) | 2017-03-23 | 2017-03-23 | A kind of power soft bag lithium ionic cell of multireel cored structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106848385A true CN106848385A (en) | 2017-06-13 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710179647.9A Pending CN106848385A (en) | 2017-03-23 | 2017-03-23 | A kind of power soft bag lithium ionic cell of multireel cored structure |
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| CN (1) | CN106848385A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785606A (en) * | 2017-10-20 | 2018-03-09 | 珠海格力电器股份有限公司 | A kind of battery and preparation method thereof |
| CN110729445A (en) * | 2018-07-16 | 2020-01-24 | 深圳先进技术研究院 | Tab with coating, preparation method thereof, battery cell, battery and electric tool |
| CN110911627A (en) * | 2019-10-25 | 2020-03-24 | 合肥国轩高科动力能源有限公司 | Method for forming tab of intermittent coating type battery pole piece |
| CN112117401A (en) * | 2019-06-20 | 2020-12-22 | 南京德朔实业有限公司 | Electric tool and battery pack thereof |
| CN113540652A (en) * | 2020-03-30 | 2021-10-22 | 北京小米移动软件有限公司 | Battery and terminal equipment |
Citations (5)
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| CN101764260A (en) * | 2010-01-28 | 2010-06-30 | 江西金钢能源科技有限公司 | Columnar lithium ion battery |
| CN201773904U (en) * | 2010-07-19 | 2011-03-23 | 武汉中聚能源科技有限公司 | Lithium ion multi-winding-core power battery |
| CN202513224U (en) * | 2012-03-19 | 2012-10-31 | 深圳市中韬电池有限公司 | Lithium ion battery |
| CN203119042U (en) * | 2013-02-27 | 2013-08-07 | 四川长虹电源有限责任公司 | Lithium ion battery |
| CN105655533A (en) * | 2014-11-12 | 2016-06-08 | 深圳市量能科技有限公司 | Lithium ion battery, production method and electrode lug treatment method thereof |
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2017
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101764260A (en) * | 2010-01-28 | 2010-06-30 | 江西金钢能源科技有限公司 | Columnar lithium ion battery |
| CN201773904U (en) * | 2010-07-19 | 2011-03-23 | 武汉中聚能源科技有限公司 | Lithium ion multi-winding-core power battery |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785606A (en) * | 2017-10-20 | 2018-03-09 | 珠海格力电器股份有限公司 | A kind of battery and preparation method thereof |
| CN110729445A (en) * | 2018-07-16 | 2020-01-24 | 深圳先进技术研究院 | Tab with coating, preparation method thereof, battery cell, battery and electric tool |
| CN112117401A (en) * | 2019-06-20 | 2020-12-22 | 南京德朔实业有限公司 | Electric tool and battery pack thereof |
| CN110911627A (en) * | 2019-10-25 | 2020-03-24 | 合肥国轩高科动力能源有限公司 | Method for forming tab of intermittent coating type battery pole piece |
| CN110911627B (en) * | 2019-10-25 | 2022-03-11 | 合肥国轩高科动力能源有限公司 | Method for forming tab of intermittent coating type battery pole piece |
| CN113540652A (en) * | 2020-03-30 | 2021-10-22 | 北京小米移动软件有限公司 | Battery and terminal equipment |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170613 |
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| RJ01 | Rejection of invention patent application after publication |