CN109818066A - A kind of novel power battery preparation method - Google Patents
A kind of novel power battery preparation method Download PDFInfo
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- CN109818066A CN109818066A CN201711152072.8A CN201711152072A CN109818066A CN 109818066 A CN109818066 A CN 109818066A CN 201711152072 A CN201711152072 A CN 201711152072A CN 109818066 A CN109818066 A CN 109818066A
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- power battery
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- battery
- plastic film
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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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- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a kind of novel power battery preparation methods, this method is battery using separate structure, it is made of aluminum plastic film (1), monomer (2) and tab (3), shell aluminum plastic film (1) side and bottom edge are first not welded to together, before to be changed after baking, then to the interior welding of glove box, fluid injection, standing, chemical conversion, pumping and partial volume prepare power battery.The beneficial effects of the present invention are: the preparation of power battery is from closing slurry, be applied to enter the production process of oven cooking cycle before fluid injection and do not need to take dehumidifying measure, it can be indoors under environment, 10-40 DEG C of temperature, relative humidity 0%-95% is produced, cost is dramatically saved, the production efficiency of power battery is improved.
Description
Technical field
The invention belongs to power battery manufacturing technology fields, and in particular to a kind of novel power battery preparation method.
Background technique
Inside lithium ion cell is a more complicated chemical system, and the reaction process and result of these chemical systems are all
It is closely related with moisture.And the control of moisture out of control or roughening, it tends to cause the exceeded of moisture in battery, can not only lead
The decomposition of electrolyte lithium salt in pond is sent a telegraph, and film forming and stability generation baneful influence to positive and negative pole material, so as to cause
The chemical property of lithium ion battery such as capacity, internal resistance, high rate performance, cycle performance and security performance can all generate more
It is apparent to deteriorate.Above-mentioned film, i.e. solid electrolyte interface film (SEI film) are a layer-selectives through film, can make lithium
Ion freely penetrates, and electrolyte molecule cannot penetrate.The electricity that the composition of electrolyte and the additive of trace form SEI film
Position, compactness extent, battery irreversible capacity loss, internal resistance of cell etc. have significant impact.Water is as trace a kind of in electrolyte
Component has important influence to the formation and battery performance of lithium ion battery SEI film, is mainly shown as that battery capacity becomes smaller, puts
Phenomena such as electric time shortens, and internal resistance increases, Capacity fading, cell expansion, therefore, made in the routine of lithium ion battery
Cheng Zhong, it is necessary to humidity and positive and negative pole material, the water content of electrolyte of strictly controlled environment.And power battery mostly uses
On Electric Transit, taxi, the service life and security performance to battery are more stringent.Many factories require battery can be used
5 years or more or 150,000 kilometers of vehicle travel or more, as battery security performance to be forced through overcharge, over-discharge, short circuit,
High-temperature baking falls the tests such as road, seawater immersion.Thus, power battery is in process of production than normal to the control requirement of moisture content
Advise stringenter more of battery.
And there are also another reason, in order to improve the electric conductivity of power battery, current battery positive electrode also into
Update, especially LiFePO4 are gone, little particle even nanoscale material has been widely applied, and material granule is got over
Small pole piece water removal is more difficult, requires under the conditions of common process manufacturing environment higher.
Currently, major power battery manufacturer common practice is exactly to put into a large amount of fund to turn for the configuration of each workshop
Dehumidifier is taken turns, it is very universal thing that a power battery production line, which puts into more than one hundred million members,.Workshop humidity is done more lower better, some works
Factory even accomplishes that all envionmental humidities contacted with pole piece are both less than 2%.
What produce high capital caused by harsh humid control in face of power battery to put into, if having method can be with
Power battery is produced under the conditions of not needing dehumidifying in addition to fluid injection process, to solve this problem, the present invention provides one kind
Novel power battery preparation method.
Summary of the invention
The present invention discloses a kind of novel power battery preparation method, which starches from conjunction, is applied to note
The production process for entering oven cooking cycle before liquid does not need to take dehumidifying measure, does not need dehumidifier, indoors under environment, temperature 10-
40 DEG C, relative humidity 0%-95% can be produced.
The technical solution adopted by the present invention is that:
A kind of novel power battery preparation method, this method is battery using separate structure, by aluminum plastic film (1), monomer (2) and pole
Ear (3) composition, shell aluminum plastic film (1) side and bottom edge are first not welded to together, after toasting before to be changed, then arrive weldering in glove box
It connects, fluid injection, standing, chemical conversion, pumping and partial volume prepare power battery.
The manufacturing process of the power battery is to close slurry, coating, baking, rolling, cutting, manufacture monomer (2), by monomer
(2) main body, weldering aluminum plastic film (1) closedtop, baking, weldering side and bottom edge, fluid injection, standing, chemical conversion, pumping and partial volume are merged into.
The monomer (2) is negative electrode tab than the how a piece of positive and negative plate of anode, the combination of diaphragm, negative electrode tab, every
Film, positive plate are sequentially overlapped；The pole piece quantity of monomer (2) is determined according to the water content of pole piece after toasting before fluid injection
, it is ensured that meet technology standard requirements by pole piece water content after each monomer of battery (2) baking of this structure manufacture.
The monomer (2) is positive and negative by the way that all positive and negative electrode pole piece current collector exits (4) are respectively welded at battery
Made of on pole tab (3), and when battery toast in baking oven each monomer (2) is to diverge；Welding when soldering polar ear (3)
Position does not tear pole piece current collector exit (4) after ensuring each monomer (2) fork.
The beneficial effects of the present invention are: the preparation of power battery starches from conjunction, is applied to the production for entering oven cooking cycle before fluid injection
Process does not need to take dehumidifying measure, can be indoors under environment, and 10-40 DEG C of temperature, relative humidity 0%-95% is produced, pole
The earth saves cost, improves the production efficiency of power battery.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of power battery of the present invention, 1 is aluminum plastic film in figure, 2 is monomer, 3 is tab, 4 is collection
Fluid exit.
Attached drawing 2 is the monomer structure schematic diagram of power battery of the present invention, 2 is monomer in figure, 4 is collector exit.
Specific embodiment
The case being set forth below is to supplementary explanation of the invention, rather than is limitation of the present invention.
Embodiment 1
The present embodiment is to prepare a model IFP12180270, capacity 50000mAh flexible package lamination power lithium-ion battery.
At 35 DEG C of temperature, humidity 55% closes slurry workshop, takes double centner iron lithium that other materials is added to stir, after stirring under 55% environment of humidity
It is coated into pole piece.Be then placed in baking oven baking, after baking by pole piece turn be moved to 30 DEG C of temperature, humidity 58% assembly shop into
Row rolling, cut-parts, lamination etc., pole piece size 174mm*248mm, cut out positive plate and the negative electrode tab produced after piece and
Diaphragm builds up monomer structure, and wherein negative electrode tab, diaphragm, positive plate are sequentially overlapped, and positive plate is 13, negative electrode tab 14.Then
The collector exit of 4 monomers is welded on tab together, it is to be ensured that do not tear the collection of monomer pole piece after each monomer fork
Fluid exit, then made aluminum plastic film is welded on tab, closedtop not side seal underseal.Then battery is put into baking
Case baking, when placement each monomer fork, baking 48 hours or more, vacuum degree -0.09Mpa.After baking, dynamic fluid injection workshop hand is shifted
Casing welds the side of aluminum plastic film and bottom edge, then fluid injection.It is placed 1 day after fluid injection and starts to be melted into, shelved 1 day and take out after chemical conversion
Finished battery is made in sealing gland mouth, then partial volume.
Embodiment 2
The present embodiment is to prepare a model IFP11165240, capacity 40000mAh flexible package lamination power lithium-ion battery.
At 28 DEG C of temperature, humidity 65% closes slurry workshop, takes double centner iron lithium that other materials is added to stir, after stirring under 65% environment of humidity
It is coated into pole piece.Be then placed in baking oven baking, after baking by pole piece turn be moved to 30 DEG C of temperature, humidity 74% assembly shop into
Row rolling, cut-parts, lamination etc., pole piece size 160mm*220mm, cut out positive plate and the negative electrode tab produced after piece and
Diaphragm builds up monomer structure, and wherein negative electrode tab, diaphragm, positive plate are sequentially overlapped, and positive plate is 16, negative electrode tab 17.Then
The collector exit of 3 monomers is welded on tab together, it is to be ensured that do not tear the collection of monomer pole piece after each monomer fork
Fluid exit, then made aluminum plastic film is welded on tab, closedtop not side seal underseal.Then battery is put into baking
Case baking, when placement each monomer fork, baking 48 hours or more, vacuum degree -0.09Mpa.After baking, dynamic fluid injection workshop hand is shifted
Casing welds the side of aluminum plastic film and bottom edge, then fluid injection.It is placed 1 day after fluid injection and starts to be melted into, shelved 1 day and take out after chemical conversion
Finished battery is made in sealing gland mouth, then partial volume.
Embodiment 3
The present embodiment is to prepare a model IFP24174174, capacity 40000mAh flexible package lamination power lithium-ion battery.
At 30 DEG C of temperature, humidity 80% closes slurry workshop, takes double centner iron lithium that other materials is added to stir, after stirring under 80% environment of humidity
It is coated into pole piece.Be then placed in baking oven baking, after baking by pole piece turn be moved to 30 DEG C of temperature, humidity 72% assembly shop into
Row rolling, cut-parts, lamination etc., pole piece size 163mm*125mm, cut out positive plate and the negative electrode tab produced after piece and
Diaphragm builds up monomer structure, and wherein negative electrode tab, diaphragm, positive plate are sequentially overlapped, and positive plate is 21, negative electrode tab 22.Then
The collector exit of 4 monomers is welded on tab together, it is to be ensured that do not tear the collection of monomer pole piece after each monomer fork
Fluid exit, then made aluminum plastic film is welded on tab, closedtop not side seal underseal.Then battery is put into baking
Case baking, when placement each monomer fork, baking 48 hours or more, vacuum degree -0.09Mpa.After baking, dynamic fluid injection workshop hand is shifted
Casing welds the side of aluminum plastic film and bottom edge, then fluid injection.It is placed 1 day after fluid injection and starts to be melted into, shelved 1 day and take out after chemical conversion
Finished battery is made in sealing gland mouth, then partial volume.
Claims (4)
1. a kind of novel power battery preparation method, which is characterized in that this method is battery using separate structure, by aluminum plastic film
(1), monomer (2) and tab (3) composition, shell aluminum plastic film (1) side and bottom edge are first not welded to together, are toasted before to be changed
Afterwards, then to welding, fluid injection, standing, chemical conversion, pumping and partial volume in glove box power battery is prepared.
2. a kind of novel power battery preparation method according to claim 1, which is characterized in that the system of the power battery
Technique is made to close slurry, coating, baking, rolling, cutting, manufacture monomer (2), monomer (2) being merged into main body, weldering aluminum plastic film (1)
Closedtop, baking, weldering side and bottom edge, fluid injection, standing, chemical conversion, pumping and partial volume.
3. a kind of novel power battery preparation method according to claim 1, which is characterized in that the monomer (2) is
The combination of the negative electrode tab positive and negative plate much more a piece of than anode, diaphragm, negative electrode tab, diaphragm, positive plate are sequentially overlapped.
4. a kind of novel power battery preparation method according to claim 1, which is characterized in that the monomer (2) is logical
It crosses made of all positive and negative electrode pole piece current collector exits (4) are respectively welded on battery positive and negative electrode tab (3), and electricity
Pond when being toasted in baking oven each monomer (2) be fork；Welding position when soldering polar ear (3) will ensure that each monomer (2) are diverged
Pole piece current collector exit (4) are not torn afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711152072.8A CN109818066A (en) | 2017-11-19 | 2017-11-19 | A kind of novel power battery preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711152072.8A CN109818066A (en) | 2017-11-19 | 2017-11-19 | A kind of novel power battery preparation method |
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| CN109818066A true CN109818066A (en) | 2019-05-28 |
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| CN201711152072.8A Pending CN109818066A (en) | 2017-11-19 | 2017-11-19 | A kind of novel power battery preparation method |
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Citations (10)
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|---|---|---|---|---|
| JPS5835877A (en) * | 1981-08-26 | 1983-03-02 | Yuasa Battery Co Ltd | Closed type lead battery and its production method |
| JPH0426072A (en) * | 1990-05-21 | 1992-01-29 | Matsushita Electric Ind Co Ltd | Manufacture of sealed-type lead battery |
| CN103682455A (en) * | 2013-12-05 | 2014-03-26 | 天津赫维科技有限公司 | Method for manufacturing square-round core aluminum-plastic membrane lithium ion battery for evaluating |
| CN104332646A (en) * | 2014-10-17 | 2015-02-04 | 金川集团股份有限公司 | Plastic-aluminum film packed cylindrical lithium ion battery and making method thereof |
| CN104681878A (en) * | 2015-03-17 | 2015-06-03 | 王文斌 | Manufacturing method of winding type lithium ion battery and winding type lithium ion battery |
| CN105406110A (en) * | 2015-12-17 | 2016-03-16 | 山东精工电子科技有限公司 | Long-circulation high-safety square ternary polymer lithium ion power battery |
| CN105406107A (en) * | 2015-11-16 | 2016-03-16 | 珠海光宇电池有限公司 | Lithium ion battery and preparation method thereof |
| CN106207020A (en) * | 2016-08-30 | 2016-12-07 | 南通鼎鑫电池有限公司 | The protecting band of a kind of polymer Li-ion battery and means of defence thereof |
| CN106532105A (en) * | 2016-12-17 | 2017-03-22 | 山东精工电子科技有限公司 | Internal series soft package lithium-ion battery and preparation method thereof |
| CN107256971A (en) * | 2017-05-23 | 2017-10-17 | 马鞍山活力电动科技有限公司 | A kind of Soft Roll ternary electrokinetic cell and preparation method thereof |
-
2017
- 2017-11-19 CN CN201711152072.8A patent/CN109818066A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5835877A (en) * | 1981-08-26 | 1983-03-02 | Yuasa Battery Co Ltd | Closed type lead battery and its production method |
| JPH0426072A (en) * | 1990-05-21 | 1992-01-29 | Matsushita Electric Ind Co Ltd | Manufacture of sealed-type lead battery |
| CN103682455A (en) * | 2013-12-05 | 2014-03-26 | 天津赫维科技有限公司 | Method for manufacturing square-round core aluminum-plastic membrane lithium ion battery for evaluating |
| CN104332646A (en) * | 2014-10-17 | 2015-02-04 | 金川集团股份有限公司 | Plastic-aluminum film packed cylindrical lithium ion battery and making method thereof |
| CN104681878A (en) * | 2015-03-17 | 2015-06-03 | 王文斌 | Manufacturing method of winding type lithium ion battery and winding type lithium ion battery |
| CN105406107A (en) * | 2015-11-16 | 2016-03-16 | 珠海光宇电池有限公司 | Lithium ion battery and preparation method thereof |
| CN105406110A (en) * | 2015-12-17 | 2016-03-16 | 山东精工电子科技有限公司 | Long-circulation high-safety square ternary polymer lithium ion power battery |
| CN106207020A (en) * | 2016-08-30 | 2016-12-07 | 南通鼎鑫电池有限公司 | The protecting band of a kind of polymer Li-ion battery and means of defence thereof |
| CN106532105A (en) * | 2016-12-17 | 2017-03-22 | 山东精工电子科技有限公司 | Internal series soft package lithium-ion battery and preparation method thereof |
| CN107256971A (en) * | 2017-05-23 | 2017-10-17 | 马鞍山活力电动科技有限公司 | A kind of Soft Roll ternary electrokinetic cell and preparation method thereof |
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Application publication date: 20190528 |
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