CN105161669A - Filling process for power type lithium manganate battery - Google Patents
Filling process for power type lithium manganate battery Download PDFInfo
- Publication number
- CN105161669A CN105161669A CN201510470354.7A CN201510470354A CN105161669A CN 105161669 A CN105161669 A CN 105161669A CN 201510470354 A CN201510470354 A CN 201510470354A CN 105161669 A CN105161669 A CN 105161669A
- Authority
- CN
- China
- Prior art keywords
- battery
- liquid injection
- electrolyte
- injection process
- plastic film
- 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.)
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
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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
- H01M10/058—Construction or manufacture
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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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
-
- 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)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
The invention belongs to the preparation field of lithium batteries, in particular to a filling process for a power type lithium manganate battery, comprising: packaging a top edge and a side edge of a core by an aluminum plastic film on a top sealing mould and a side sealing mould respectively, reserving an air bag in packaging; filling the aluminum plastic film used for packaging the core with an electrolyte; standing the battery filled with the electrolyte; and pumping air from the air bag and sealing. The air bag is reserved in the packaging process, so that gas in the battery can be pumped completely through the air bag; and meanwhile, the redundant electrolyte is pumped also in the air pumping and sealing processes so as to ensure tight packaging and avoid the ballooning phenomenon.
Description
Technical field
The present invention relates to the preparation technology of lithium battery, is the liquid injection process of dynamic lithium manganate battery specifically.
Background technology
For alleviating global energy crisis, environmental crisis, some countries concentrate on focus on New Energy Industry, and Development of EV is then the emphasis of New Energy Industry; Therefore, for electric automobile provides the power lithium battery of clean environment firendly more and more to come into one's own.At present, for power lithium battery, in manufacturing technology and in application, have very large market and development prospect, technique and the application study of strengthening power lithium battery are significant for the fast development promoting New Energy Industry.
Lithium battery on market generally comprises positive pole, negative pole, electrolyte, barrier film, positive pole negative wire, center terminal etc., and wherein positive electrode selects the material with layer structure, tridimensional network or tunnel structure usually; The intercalation materials of li ions that negative material selects lithium battery to free in and out usually, only there is corresponding expansion or contraction in material itself, do not occur that stress is excessive causes efflorescence and avalanche, thus high specific capacity can be obtained, have again rock-steady structure support under excellent cycle characteristic.But existing lithium battery is produced because processing step in preparation process and condition control good not, can cause encapsulation imprecision, cause the electrolyte of battery to be revealed and make battery capacity decline, while air in moisture also can enter in battery, cause ballooning.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of liquid injection process encapsulating tight dynamic lithium manganate battery.
The technical scheme that the present invention solves the problems of the technologies described above employing is: the liquid injection process of dynamic lithium manganate battery, and it comprises the following steps:
(1) battery core aluminum plastic film is carried out on closedtop mould and side seal mould top margin and side encapsulation respectively, during encapsulation, reserve airbag;
(2) in the aluminum plastic film of packaging electric core, electrolyte is injected;
(3) battery being marked with electrolyte is left standstill;
(4) seal from airbag gas bleeding.
Further, before injection electrolyte, by the aluminum plastic film vacuumize of packaging electric core.
Further, when top margin encapsulates, closedtop patrix temperature is 230 DEG C ± 5 DEG C, and closedtop counterdie temperature is 180 DEG C ± 10 DEG C.
Further, when side encapsulates, side seal patrix temperature is 190 DEG C ± 5 DEG C, and side seal counterdie temperature is 180 DEG C ± 5 DEG C.
Further, described aluminum plastic film is made up of interior layer polypropylene, middle level aluminium foil, outer polyester material three layers.
Further, time of repose is 10min ± 1min.
Further, air pressure 0.5MPa is sealed.
From above scheme, the present invention reserves airbag in encapsulation process, drains only by airbag by the gas of inside battery; Meanwhile, if having unnecessary electrolyte bleeding in capping processes, also can extract out together; Thus ensure that encapsulation is tight, avoid causing ballooning.
Embodiment
Below the present invention is introduced in detail:
The liquid injection process of dynamic lithium manganate battery, it comprises and battery core aluminum plastic film is carried out on closedtop mould and side seal mould top margin and side encapsulation respectively, reserves airbag during encapsulation; Wherein aluminum plastic film is made up of interior layer polypropylene, middle level aluminium foil, outer polyester material three layers, and it not only has high barrier, good heat sealability; And do not react with electrolyte, there is good ductility, pliability and mechanical strength.
When top margin encapsulates, closedtop patrix temperature is 230 DEG C ± 5 DEG C, and closedtop counterdie temperature is 180 DEG C ± 10 DEG C; When side encapsulates, side seal patrix temperature is 190 DEG C ± 5 DEG C, and side seal counterdie temperature is 180 DEG C ± 5 DEG C; Such guarantee packaging effect, makes encapsulation tight.
Electrolyte is injected in the aluminum plastic film of packaging electric core; This needs strictly controlled environment humidity and vacuum degree, requires to carry out in slipcase case, and the vacuum degree in glove box is-0.02MPa.Electrolyte consumption liquid is also an important parameter, and the battery of unlike signal injects the quality difference of electrolyte.Before injection electrolyte, by the aluminum plastic film vacuumize of packaging electric core, the moisture in removing battery, ensures the quality of battery.
After adding electrolyte, should 10min be left standstill, ensure that electrolyte fully infiltrates; In order to make electrolyte absorb completely, must seal from airbag gas bleeding and at the air pressure of 0.5MPa, can the gas of inside battery be drained only by battery; Meanwhile, if having unnecessary electrolyte bleeding in capping processes, also can extract out together; Thus ensure that encapsulation is tight, avoid causing ballooning.
Above-mentioned execution mode is used for illustrative purposes only, and be not limitation of the present invention, the those of ordinary skill of relevant technical field, without departing from the spirit and scope of the present invention, can also make various change and modification, therefore all equivalent technical schemes also should belong to category of the present invention.
Claims (7)
1. the liquid injection process of dynamic lithium manganate battery, it comprises the following steps:
(1) battery core aluminum plastic film is carried out on closedtop mould and side seal mould top margin and side encapsulation respectively, during encapsulation, reserve airbag;
(2) in the aluminum plastic film of packaging electric core, electrolyte is injected;
(3) battery being marked with electrolyte is left standstill;
(4) seal from airbag gas bleeding.
2. liquid injection process according to claim 1, is characterized in that: before injection electrolyte, by the aluminum plastic film vacuumize of packaging electric core.
3. liquid injection process according to claim 1, it is characterized in that: when top margin encapsulates, closedtop patrix temperature is 230 DEG C ± 5 DEG C, and closedtop counterdie temperature is 180 DEG C ± 10 DEG C.
4. liquid injection process according to claim 3, it is characterized in that: when side encapsulates, side seal patrix temperature is 190 DEG C ± 5 DEG C, and side seal counterdie temperature is 180 DEG C ± 5 DEG C.
5. liquid injection process according to claim 4, is characterized in that: described aluminum plastic film is made up of interior layer polypropylene, middle level aluminium foil, outer polyester material three layers.
6. liquid injection process according to claim 1, is characterized in that: time of repose is 10min ± 1min.
7. liquid injection process according to claim 1, is characterized in that: sealing air pressure 0.5MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510470354.7A CN105161669A (en) | 2015-08-05 | 2015-08-05 | Filling process for power type lithium manganate battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510470354.7A CN105161669A (en) | 2015-08-05 | 2015-08-05 | Filling process for power type lithium manganate battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105161669A true CN105161669A (en) | 2015-12-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510470354.7A Pending CN105161669A (en) | 2015-08-05 | 2015-08-05 | Filling process for power type lithium manganate battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105161669A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681104A (en) * | 2017-08-23 | 2018-02-09 | 安徽省力霸动力锂电池科技有限公司 | A kind of liquid injection process of polymer soft bag lithium ionic cell |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394316A (en) * | 2011-12-08 | 2012-03-28 | 深圳市格瑞普电池有限公司 | Packaging method of lithium ion battery, and lithium ion battery |
| CN202205818U (en) * | 2011-07-28 | 2012-04-25 | 东莞市金源电池科技有限公司 | Novel air bag structure for liquid-state flexible package lithium ion battery |
| CN103872384A (en) * | 2014-04-09 | 2014-06-18 | 深圳市格瑞普电池有限公司 | Preparation method of laminated lithium ion battery |
-
2015
- 2015-08-05 CN CN201510470354.7A patent/CN105161669A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202205818U (en) * | 2011-07-28 | 2012-04-25 | 东莞市金源电池科技有限公司 | Novel air bag structure for liquid-state flexible package lithium ion battery |
| CN102394316A (en) * | 2011-12-08 | 2012-03-28 | 深圳市格瑞普电池有限公司 | Packaging method of lithium ion battery, and lithium ion battery |
| CN103872384A (en) * | 2014-04-09 | 2014-06-18 | 深圳市格瑞普电池有限公司 | Preparation method of laminated lithium ion battery |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107681104A (en) * | 2017-08-23 | 2018-02-09 | 安徽省力霸动力锂电池科技有限公司 | A kind of liquid injection process of polymer soft bag lithium ionic cell |
| CN107681104B (en) * | 2017-08-23 | 2020-12-25 | 安徽省力霸动力锂电池科技有限公司 | Liquid injection process of polymer soft package lithium ion battery |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20151216 |