CN109742314A - Standing and chemical synthesis technology after lithium ion battery with aluminum shell fluid injection - Google Patents
Standing and chemical synthesis technology after lithium ion battery with aluminum shell fluid injection Download PDFInfo
- Publication number
- CN109742314A CN109742314A CN201811599096.2A CN201811599096A CN109742314A CN 109742314 A CN109742314 A CN 109742314A CN 201811599096 A CN201811599096 A CN 201811599096A CN 109742314 A CN109742314 A CN 109742314A
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- China
- Prior art keywords
- battery core
- fluid injection
- battery
- lithium ion
- closed chest
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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
Abstract
The invention discloses standing and chemical synthesis technology, the techniques after a kind of lithium ion battery with aluminum shell fluid injection to implement according to the following steps: battery core is by normal amount fluid injection；It is connected in series after same a batch battery core fluid injection；The battery core of series connection is encased in closed chest；1~2h is stood under normal temperature and pressure conditions；Then closed chest is vacuumized；Under vacuum conditions stand 20~for 24 hours；Nitrogen breaking vacuum is injected into closed chest, and at least 10min is stood under normal pressure state；It goes to the battery core still in parallel connection is crossed through stewing process in chemical conversion case, is vacuumized after battery core wiring；Routinely index makees formation process under vacuum conditions；After chemical conversion, aluminum hull battery core opening is sealed using steel ball.The present invention is stood in vacuum condition, on the one hand accomplishes that the not direct air with workshop of the electrolyte in battery core contacts, and will not generate HF acid.On the other hand ensure that pole plate built in battery core is sufficiently infiltrated by electrolyte, so that manufactured battery quality is not only good but also stablize.
Description
Technical field
The invention belongs to electrochemical cell manufacturing technology field, in particular it relates to a kind of lithium ion battery
Manufacturing process, standing and chemical synthesis technology after especially a kind of lithium ion battery with aluminum shell fluid injection.
Background technique
It is the manufacture indispensable process of lithium ion battery that electrolyte is injected into battery core, in order to allow electrolyte sufficiently to infiltrate
Pole plate must stand a period of time after battery core injects electrolyte, then could implement subsequent formation process.Due to aluminum hull
Casing of lithium ion battery is harder than soft bag lithium ionic cell shell, and battery core can wouldn't seal immediately after injecting electrolyte, so
Postorder electrolyte built-in during standing and being melted into is exposed among atmosphere, if air humidity is relatively large in workshop, electrolyte
In acid easily decompose with lithium salts, it is sour to generate HF, to reduce the electrolysis effectiveness of battery.In response to this problem, the industry is usual
I.e. with sealing paper by aluminum hull opening portion temporary enclosed after fluid injection, with reduce had been injected into battery core electrolyte in subsequent standing and
During chemical conversion with air touch opportunity.Such interim measure is very easy, and also effectively, but the precondition applied is the air in workshop
Humid control is in a suitable range.Otherwise, the interim measure effect is unobvious, is not able to satisfy production requirement.
Summary of the invention
Present invention is generally directed to lithium ion battery with aluminum shell during standing and chemical conversion open-end question, proposes a kind of method letter
Single, implementation is easy, sealing effect is good, and work is stood and be melted into after the lithium ion battery with aluminum shell fluid injection being not required to workshop humidity
Skill.
The present invention is achieved through the following technical solutions technical goal.
Standing and chemical synthesis technology after lithium ion battery with aluminum shell fluid injection the improvement is that the technique is real according to the following steps
It applies:
1.1, battery core presses normal amount fluid injection；
1.2, it is connected in series after same a collection of battery core fluid injection；
1.3, the battery core of series connection is encased in closed chest；
1.4,1~2h is stood under normal temperature and pressure conditions；
1.5, then closed chest is vacuumized；
1.6, under vacuum conditions stand 20~for 24 hours；
1.7, nitrogen breaking vacuum is injected into closed chest, and at least 10min is stood under normal pressure state；
1.8, the battery core still in parallel connection will be crossed through stewing process to go in chemical conversion case, vacuumize after battery core wiring；
1.9, routinely technological parameter implements formation process under vacuum conditions；
1.10, after being melted into, aluminum hull battery core opening is sealed using steel ball.
As the measure of further improvement, the parameter of the vacuum is -0.081~-0.10MPa.
Compared with prior art, the present invention having the positive effect that:
1, technical process is simple, it is easy to implement, it is low to require the environmental condition of workshop；
2, it is just placed in closed cabinet after battery core acid filling and stands and be melted into, so the electrolyte in battery core is not by workshop air
The influence of humidity can be reduced to the requirement of workshop wet down；
3, it stands under vacuum conditions, on the one hand accomplishes that the electrolyte in battery core is not direct and contacted with the air in workshop, Bu Huisheng
Produce HF acid；On the other hand ensure that pole plate built in battery core is sufficiently infiltrated by electrolyte, so that manufactured battery quality is both good and stablizes.
Specific implementation
The present invention is further illustrated below with reference to embodiment.
Embodiment 1
The present embodiment is that a kind of specification is 50Ah winding wire type lithium ion battery with aluminum shell, stood after battery core fluid injection and chemical synthesis technology press with
Lower step is implemented:
1, battery core injects electrolyte by normal amount；
2, it is connected in series after same a collection of battery core fluid injection；
3, the battery core of series connection is encased in closed chest；
4,2h is stood under normal temperature and pressure conditions；
5, -0.08MPa then is vacuumized to closed chest；
6, it stands under vacuum conditions for 24 hours；
7, nitrogen breaking vacuum is injected into closed chest, stands 10min under normal pressure state；
8, the battery core still in parallel connection will be crossed through stewing process to go in chemical conversion case, vacuumized after battery core wiring-
0.08MPa；
1.9, routinely technological parameter implements formation process under vacuum conditions；
1.10, after being melted into, aluminum hull battery core opening is sealed using steel ball.
Embodiment 2
The present embodiment is still that a kind of specification is 50Ah winding wire type lithium ion battery with aluminum shell, stands after battery core fluid injection and chemical synthesis technology is pressed
Following steps are implemented:
1, battery core injects electrolyte by normal amount；
2, it is connected in series after same a collection of battery core fluid injection；
3, the battery core of series connection is encased in closed chest；
4,1h is stood under normal temperature and pressure conditions；
5, -0.10MPa then is vacuumized to closed chest；
6,20h is stood under vacuum conditions；
7, nitrogen breaking vacuum is injected into closed chest, stands 30min under normal pressure state；
8, the battery core still in parallel connection will be crossed through stewing process to go in chemical conversion case, vacuumized after battery core wiring-
0.10MPa；
1.9, routinely technological parameter implements formation process under vacuum conditions；
1.10, after being melted into, aluminum hull battery core opening is sealed using steel ball.
Comparative example
Comparative example specification is the same with Examples 1 and 2, is 50Ah winding wire type lithium ion battery with aluminum shell, battery core is after fluid injection by existing
The standing and chemical synthesis technology for having technology to implement are as follows: firstly, battery core injects electrolyte by normal amount, with a batch battery core after fluid injection
It is connected in series, by the low sealing of aluminum hull battery core opening sealing, makees 24 in this case and stand, then battery core wiring implementationization
At process, the sealing that aluminum hull battery core open-mouth is removed after chemical conversion is low, uses steel ball sealing instead immediately.
The battery core for now making the embodiment of the present invention and comparative example, makees performance test respectively under the same conditions, specific to survey
Examination content and result see the table below:
The present invention and comparative example the performance test results table
From the test data of upper table record it is found that implementation of embodiment of the present invention data are more better than comparative example, implementation therein
The data of example 2 are more excellent than embodiment 1, and especially first charge discharge efficiency improves 2.82% than comparative example.Most importantly in vacuum item
It is stood under part, on the one hand accomplishes that the electrolyte in battery core is not direct and contacted with the air in workshop, HF acid will not be generated.On the other hand
Ensure that pole plate built in battery core is sufficiently infiltrated by electrolyte, so that manufactured battery quality is not only good but also stablizes.
Claims (2)
1. standing and chemical synthesis technology after a kind of lithium ion battery with aluminum shell fluid injection, it is characterised in that the technique is implemented according to the following steps:
1.1, battery core presses normal amount fluid injection；
1.2, it is connected in series after same a collection of battery core fluid injection；
1.3, the battery core of series connection is encased in closed chest；
1.4,1~2h is stood under normal temperature and pressure conditions；
1.5, then closed chest is vacuumized；
1.6, under vacuum conditions stand 20~for 24 hours；
1.7, nitrogen breaking vacuum is injected into closed chest, and at least 10min is stood under normal pressure state；
1.8, the battery core still in parallel connection will be crossed through stewing process to go in chemical conversion case, vacuumize after battery core wiring；
1.9, routinely technological parameter implements formation process under vacuum conditions；
1.10, after being melted into, aluminum hull battery core opening is sealed using steel ball.
2. standing and chemical synthesis technology after lithium ion battery with aluminum shell fluid injection according to claim 1, it is characterised in that: described true
Empty parameter is -0.081~-0.10MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811599096.2A CN109742314A (en) | 2018-12-26 | 2018-12-26 | Standing and chemical synthesis technology after lithium ion battery with aluminum shell fluid injection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811599096.2A CN109742314A (en) | 2018-12-26 | 2018-12-26 | Standing and chemical synthesis technology after lithium ion battery with aluminum shell fluid injection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109742314A true CN109742314A (en) | 2019-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811599096.2A Withdrawn CN109742314A (en) | 2018-12-26 | 2018-12-26 | Standing and chemical synthesis technology after lithium ion battery with aluminum shell fluid injection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109742314A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112366362A (en) * | 2020-11-10 | 2021-02-12 | 江苏诺迪新能源科技有限公司 | Novel high-voltage lithium ion battery and preparation method thereof |
-
2018
- 2018-12-26 CN CN201811599096.2A patent/CN109742314A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112366362A (en) * | 2020-11-10 | 2021-02-12 | 江苏诺迪新能源科技有限公司 | Novel high-voltage lithium ion battery and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190510 |
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| WW01 | Invention patent application withdrawn after publication |