CN104409781A - Method for manufacturing square power polymer lithium ion battery - Google Patents

Method for manufacturing square power polymer lithium ion battery Download PDF

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Publication number
CN104409781A
CN104409781A CN201410659118.5A CN201410659118A CN104409781A CN 104409781 A CN104409781 A CN 104409781A CN 201410659118 A CN201410659118 A CN 201410659118A CN 104409781 A CN104409781 A CN 104409781A
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CN
China
Prior art keywords
positive
pole
negative
lug
battery
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.)
Pending
Application number
CN201410659118.5A
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Chinese (zh)
Inventor
朱介丁
肖德胜
杨琴
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XINYU ETERNAL ENERGY Co Ltd
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XINYU ETERNAL ENERGY Co Ltd
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Application filed by XINYU ETERNAL ENERGY Co Ltd filed Critical XINYU ETERNAL ENERGY Co Ltd
Priority to CN201410659118.5A priority Critical patent/CN104409781A/en
Publication of CN104409781A publication Critical patent/CN104409781A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/04Construction or manufacture in general
    • H01M10/0431Cells with wound or folded electrodes
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/058Construction or manufacture
    • H01M10/0587Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50Manufacturing or production processes characterised by the final manufactured product

Abstract

The invention discloses a method for manufacturing a square power polymer lithium ion battery. The method comprises the steps of compounding, coating, continuous rolling of positive and negative electrodes, preparing electrode pieces of multiple lugs of the positive and negative electrodes, dividing a positive and negative electrode piece coil with the multiple lugs into two coils through a continuous dividing and cutting machine, accomplishing piece manufacturing process, coiling, performing super welding on a positive electrode aluminum lug and a negative electrode nickel lug, top side packaging, injecting electrolyte, forming, high-temperature ageing, secondary packaging and performing volume distributing. The method has the advantages that the internal resistance of the manufactured battery is low, the battery emits a small amount of heat during operation, can continuously discharge electricity at a high rate, thermal design is not required during the assembly of the discharge battery, the design cost of a power battery pack can be reduced, the volumetric specific energy of the power battery pack can be improved, and the safety performance of the power battery pack can be improved.

Description

A kind of method that square power polymer lithium ion battery makes
Technical field
The present invention relates to a kind of method that lithium ion battery makes, be specifically related to a kind of method that square power shape polymer Li-ion battery makes.
Background technology
The electronic information epoch make to increase fast the demand of portable power source, lithium ion battery has the important advantage of high voltage, high power capacity, and have extended cycle life, security performance is good, make its application prospect many-sided and wide in portable electric appts, electric automobile, space technology, national defense industry etc., become the study hotspot widely paid close attention in recent years.
At present, for the production method of the larger lithium ion battery of volume close to ripe, but, for the polymer Li-ion battery of small volume, because lug spacing is little, pole piece and pole packet size little, all adopt at present and make mode by hand and produce, directly affects fabrication yield and the fail safe of polymer Li-ion battery, in addition, make by hand and easily cause both positive and negative polarity cross pollution, battery automatic discharging rate is increased, and battery working time shortens.
The battery obtained by method of the present invention compares with lamination electrokinetic cell the advantage of having more with conventional unipolar ear battery single rolled cores ear structure or multi-winding-core structure battery.
Summary of the invention
The object of the present invention is to provide a kind of method that square power polymer lithium ion battery makes, the internal resistance of cell made is low, operationally generate heat little, can high magnification continuous discharge, need not heat dissipation design when discharge battery assembling, the design cost of power battery pack can be reduced, improve power battery pack volumetric specific energy, improve the security performance of power battery pack.
The present invention is achieved like this, a kind of method that square power polymer lithium ion battery makes, and it is characterized in that method step is as follows:
(1) prepare burden; Proportioning process flow process with conventional batteries proportioning process flow process, by both positive and negative polarity active material, conductive agent, both positive and negative polarity material, according to certain ratio, to be made into by solvent and whisking machines the slurry that good fluidity is convenient to be coated with by binding agent;
(2) be coated with: be coated with according to battery design technique, positive pole coating uses thickness 20um aluminium foil, anode material by coating machine by anode material even application on aluminium foil two sides; Negative pole uses 12um Copper Foil, negative pole material by coating machine by negative pole material even application on Copper Foil two sides;
(3) both positive and negative polarity roll-in; Carry out roll-in after both positive and negative polarity has been coated with, rolling process, with traditional lithium-ion battery rolling process, by continuous rolling equipment by the compacting of both positive and negative polarity powder, reaches the object improving powder adhesive property and reduce dressing thickness;
(4) both positive and negative polarity multi pole ears film-making; Pole piece after roll-in is by the die-cut pole piece of multi pole ears tableting machine, and a lug position reserved by every layer, battery;
(5) by continuous parting-cut machine, multi pole ears positive/negative plate volume is divided into 2 volumes, completes film-making flow process;
(6) reel; By full automatic winding machine by positive plate and negative plate barrier film be rolled into the core needing width and thickness according to designing requirement, the lug contraposition after the volume heart is neat;
(7) super weldering positive pole aluminium pole ears and negative pole nickel lug; Core after winding be connected with aluminium pole ears by core anode ear by super welding machine, core negative electrode lug is connected with nickel lug;
(8) last battery just can be assembled into square power polymer lithium ion battery according to top side seal-fluid injection-change into-high temperature ageing-two envelopes-partial volume.
In step of the present invention (4), the distance between lug and lug is unequal, is displacement, and the principle of design is that after ensureing winding, all reserved lug positions are overlapping, does not misplace.
Advantage of the present invention is:
1, advantage compared with conventional unipolar ear battery single rolled cores ear structure or multi-winding-core structure battery: (1) internal resistance of single cell is low, the internal resistance of single cell of 10Ah only has 2-4m Ω, therefore battery is little in the heating of work, need not heat dissipation design when battery assembling, the design cost of power battery pack can be reduced, improve power battery pack volumetric specific energy, improve the security performance of power battery pack; (2) due to internal resistance of single cell 2-4m Ω, therefore battery can allow 3C-5C big current to amplify, and the horsepower of power battery pack is strong.
2, compared with lamination electrokinetic cell: (1) film-making is not owing to needing to be cut in layer positive/negative plate, and a core is exactly a multi pole ears positive plate and multi pole ears negative plate, and therefore film-making efficiency is higher than lamination process efficiency; (2) due to winding be the positive plate of rolling, that rolling negative plate, rolling barrier film use full automatic winding machine to carry out volume is rich, therefore faster than lamination process more than 10 times of winding efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of positive pole coating in step of the present invention (2).
Fig. 2 is the structural representation of negative pole coating in step of the present invention (2).
Fig. 3 is the structural representation of negative plate multi pole ears film-making in step of the present invention (4).
Fig. 4 is the structural representation of positive plate multi pole ears film-making in step of the present invention (4).
Fig. 5 is the structural representation of winding negative plate film-making in step of the present invention (5).
Fig. 6 is the structural representation of winding positive electrode sheet film-making in step of the present invention (5).
Fig. 7 is the structural representation of core after winding in step of the present invention (6).
Fig. 8 is the structural representation of core after assembling in step of the present invention (7).
A () is positive pole coating front view, (b) is positive pole coating left view;
C () is negative pole coating front view, (d) is negative pole coating left view;
E () is multi pole ears pelleter negative plate front view, (f) is multi pole ears pelleter negative plate left view;
G () is multi pole ears pelleter positive plate front view, (h) is multi pole ears pelleter positive plate left view;
(i) be winding negative plate front view, (j) is winding negative plate left view;
K () is winding positive electrode sheet front view, (l) is winding positive electrode sheet left view;
M () is the front view of core after winding, (n) is the left view of core after winding;
O () is the front view of core after assembling, (p) is the left view of core after assembling.
In the drawings, 1, aluminium foil, 2, anode material, 3, Copper Foil, 4, negative pole material, 5, negative pole coating stays white position, 6, positive and negative multi pole ears, the empty paper tinsel positions of 7 negative pole film-makings, 8 is core body, 9, aluminium pole ears, 10, nickel lug.
Embodiment
As Figure 1-Figure 8, the present invention is achieved like this, a kind of method that square power polymer lithium ion battery makes, and it is characterized in that method step is as follows:
(1) prepare burden; Proportioning process flow process, with conventional batteries proportioning process flow process, by continuous rolling equipment by the compacting of both positive and negative polarity powder, reaches the object improving powder adhesive property and reduce dressing thickness
(2) be coated with: be coated with according to battery design technique, positive pole coating uses thickness 20um aluminium foil 1, anode material 2 by coating machine by anode material 2 even application on aluminium foil 1 two sides; Negative pole uses 12um Copper Foil 3, negative pole material 4 by coating machine by negative pole material 4 even application on Copper Foil 3 two sides;
(3) both positive and negative polarity roll-in; Carry out roll-in after both positive and negative polarity has been coated with, rolling process, with traditional lithium-ion battery rolling process, by continuous rolling equipment by the compacting of both positive and negative polarity powder, reaches the object improving powder adhesive property and reduce dressing thickness;
(4) both positive and negative polarity multi pole ears film-making; Pole piece after roll-in is by the die-cut pole piece of multi pole ears tableting machine, and a both positive and negative polarity multi pole ears position 6 reserved by every layer, battery;
(5) by continuous parting-cut machine, multi pole ears positive/negative plate volume is divided into 2 volumes, this completes film-making flow process;
(6) reel; By full automatic winding machine by positive plate and negative plate barrier film be rolled into the core 8 needing width and thickness according to designing requirement, the lug contraposition after the volume heart is neat;
(7) super weldering positive pole aluminium pole ears and negative pole nickel lug; Core after winding be connected with aluminium pole ears 9 by core anode ear by super welding machine, core negative electrode lug is connected with nickel lug 10;
(8) last battery just can be assembled into square power polymer lithium ion battery according to top side seal-fluid injection-change into-high temperature ageing-two envelopes-partial volume.

Claims (2)

1. a method for square power polymer lithium ion battery making, is characterized in that method step is as follows:
(1) prepare burden; By both positive and negative polarity active material, conductive agent, both positive and negative polarity material, according to certain ratio, is made into the slurry that good fluidity is convenient to coating by solvent and whisking machines by binding agent;
(2) be coated with: be coated with according to battery design technique, positive pole coating uses thickness 20um aluminium foil, anode material by coating machine by anode material even application on aluminium foil two sides; Negative pole uses 12um Copper Foil, negative pole material by coating machine by negative pole material even application on Copper Foil two sides;
(3) both positive and negative polarity roll-in; Roll-in is carried out, by continuous rolling equipment by the compacting of both positive and negative polarity powder after both positive and negative polarity has been coated with;
(4) both positive and negative polarity multi pole ears film-making; Pole piece after roll-in is by the die-cut pole piece of multi pole ears tableting machine, and a lug position reserved by every layer, battery;
(5) by continuous parting-cut machine, multi pole ears positive/negative plate volume is divided into 2 volumes, completes film-making flow process;
(6) reel; By full automatic winding machine by positive plate and negative plate barrier film be rolled into the core needing width and thickness according to designing requirement, the lug contraposition after the volume heart is neat;
(7) super weldering positive pole aluminium pole ears and negative pole nickel lug; Core after winding be connected with aluminium pole ears by core anode ear by super welding machine, core negative electrode lug is connected with nickel lug;
(8) last battery top side seal-fluid injection-change into-high temperature ageing-two envelopes-partial volume just can be assembled into square power polymer lithium ion battery.
2. the method for a kind of square power polymer lithium ion battery making according to claim 1, it is characterized in that: in described step (4), the distance between lug and lug is unequal, is displacement, design principle is that after winding, all reserved lug positions are overlapping, does not misplace.
CN201410659118.5A 2014-11-19 2014-11-19 Method for manufacturing square power polymer lithium ion battery Pending CN104409781A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410659118.5A CN104409781A (en) 2014-11-19 2014-11-19 Method for manufacturing square power polymer lithium ion battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410659118.5A CN104409781A (en) 2014-11-19 2014-11-19 Method for manufacturing square power polymer lithium ion battery

Publications (1)

Publication Number Publication Date
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105161769A (en) * 2015-08-05 2015-12-16 柳州豪祥特科技有限公司 Preparation process of power lithium battery
CN105428728A (en) * 2015-12-29 2016-03-23 吉安市优特利科技有限公司 Polymer power battery and manufacturing method thereof
CN105449258A (en) * 2015-12-29 2016-03-30 深圳市优特利电源有限公司 Polymer power battery and manufacturing method
CN106257710A (en) * 2015-06-17 2016-12-28 深圳市沃特玛电池有限公司 A kind of multi pole ears becomes the high multiplying power lithium ion battery of size
CN110071258A (en) * 2019-04-23 2019-07-30 苏州新中能源科技有限公司 A kind of efficient tablet making technology of battery pole piece
CN111370639A (en) * 2020-05-27 2020-07-03 北京小米移动软件有限公司 Battery core, manufacturing method thereof and battery

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106257710A (en) * 2015-06-17 2016-12-28 深圳市沃特玛电池有限公司 A kind of multi pole ears becomes the high multiplying power lithium ion battery of size
CN105161769A (en) * 2015-08-05 2015-12-16 柳州豪祥特科技有限公司 Preparation process of power lithium battery
CN105428728A (en) * 2015-12-29 2016-03-23 吉安市优特利科技有限公司 Polymer power battery and manufacturing method thereof
CN105449258A (en) * 2015-12-29 2016-03-30 深圳市优特利电源有限公司 Polymer power battery and manufacturing method
CN105428728B (en) * 2015-12-29 2018-01-30 吉安市优特利科技有限公司 Polymer power battery and preparation method
CN105449258B (en) * 2015-12-29 2018-08-14 深圳市优特利电源有限公司 Polymer power battery and production method
CN110071258A (en) * 2019-04-23 2019-07-30 苏州新中能源科技有限公司 A kind of efficient tablet making technology of battery pole piece
CN111370639A (en) * 2020-05-27 2020-07-03 北京小米移动软件有限公司 Battery core, manufacturing method thereof and battery

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Application publication date: 20150311