CN108539116A - The method of the secondary fluid injection of lithium ion battery with aluminum shell - Google Patents

The method of the secondary fluid injection of lithium ion battery with aluminum shell Download PDF

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Publication number
CN108539116A
CN108539116A CN201810305883.5A CN201810305883A CN108539116A CN 108539116 A CN108539116 A CN 108539116A CN 201810305883 A CN201810305883 A CN 201810305883A CN 108539116 A CN108539116 A CN 108539116A
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Prior art keywords
lithium ion
electrolyte
ion battery
fluid injection
injected
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CN201810305883.5A
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CN108539116B (en
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宋刚
朱文军
孟令忠
邓文书
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Guizhou Amperex Technology Ltd
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Guizhou Amperex Technology Ltd
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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
    • 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
    • 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)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Secondary Cells (AREA)

Abstract

The invention discloses a kind of methods of the secondary fluid injection of lithium ion battery with aluminum shell, include the following steps：（1）Prepare electrolyte：By percentage to the quality, first time fluid injection is by 10.2% 14.2% lithium hexafluoro phosphate（LiPF6）, 28.4% 32.4% ethylene carbonate（EC）, 55.4% 59.4% dimethyl carbonate（DMC）It is mixed to form electrolyte A, second of fluid injection is by 10.2% 14.2% lithium hexafluoro phosphate（LiPF6）, 56.6% 60.6% ethylene carbonate（EC）, 27.2% 31.2% dimethyl carbonate（DMC）It is mixed to form electrolyte B；（2）By lithium ion battery to be injected on liquid injecting clamp；（3）Electrolyte A or B are injected in the needle tubing of syringe, and syringe needle is made to be inserted into the liquid injection hole of lithium ion battery；（4）Liquid injecting clamp is sent into vacuum (-tight) housing and inside lithium ion cell is evacuated, in electrolyte A or B injection lithium ion battery.Easy to operate, the high-quality reliable, high-efficiency and economic of the present invention, is suitble to promoting the use of for the secondary fluid injection of lithium ion battery with aluminum shell.

Description

The method of the secondary fluid injection of lithium ion battery with aluminum shell
Technical field
The invention belongs to lithium ion battery preparing technical fields, relate in particular to a kind of lithium ion battery with aluminum shell secondary injection The method of liquid.
Background technology
Lithium ion battery relies primarily on lithium ion movement between positive and negative electrode and carrys out work, is rechargeable battery, is widely used in On laptop and mobile phone.Fluid injection is critically important process in lithium ion battery production, directly influence battery performance and Cycle-index.The absorptivity of reservoir quantity and electrolyte is the key that determine battery performance.In the prior art, lithium ion battery master Will be by the way of a fluid injection, there are battery wellabilities, and bad, electrolyte does not fully absorb, fluid injection is not enough, fluid injection efficiency Low a series of problems is this field big technical problem anxious to be resolved.
Invention content
Easy to operate, the high-quality reliable, high-efficiency and economic of one kind that is there is provided it is an object of the invention to overcome disadvantages mentioned above, conjunction The method of the secondary fluid injection of the high lithium ion battery with aluminum shell of lattice rate.
The object of the invention and its technical problem underlying is solved using following technical scheme to realize：
A kind of method of the secondary fluid injection of lithium ion battery with aluminum shell of the present invention, wherein：First time fluid injection uses low-viscosity electrolyte, Second of fluid injection is highly conductive high-temperature electrolyte, and first time fluid injection includes the following steps：
（1）Prepare electrolyte：By percentage to the quality, by the lithium hexafluoro phosphate of 10.2%-14.2%（LiPF6）, 28.4%- 32.4% ethylene carbonate（EC）, 55.4%-59.4% dimethyl carbonate（DMC）It is mixed to form electrolyte A；
（2）By lithium ion battery to be injected on liquid injecting clamp；
（3）Electrolyte A is injected in the needle tubing of syringe, and syringe needle is made to be inserted into the liquid injection hole of lithium ion battery；
（4）Liquid injecting clamp is sent into vacuum (-tight) housing and inside lithium ion cell is evacuated, electrolyte A injects lithium ion battery It is interior；
Second of fluid injection includes the following steps：
（1）Prepare electrolyte：By percentage to the quality, by the lithium hexafluoro phosphate of 10.2%-14.2%（LiPF6）, 56.6%- 60.6% ethylene carbonate（EC）, 27.2%-31.2% dimethyl carbonate（DMC）It is mixed to form electrolyte B；
（2）Lithium ion battery to be injected is packed on liquid injecting clamp；
（3）Electrolyte A is injected in the needle tubing of syringe, and syringe needle is made to be inserted into the liquid injection hole of lithium ion battery；
（4）Liquid injecting clamp is sent into vacuum (-tight) housing and inside lithium ion cell is evacuated, electrolyte B injects lithium ion battery It is interior；
（5）Gas is filled with into vacuum (-tight) housing, external pressurization promotes electrolyte B fluid injections；
（6）Liquid injecting clamp is taken out and removes battery, fluid injection finishes.
The method of the above-mentioned secondary fluid injection of lithium ion battery with aluminum shell, wherein：Step when second of fluid injection（5）In gas be nitrogen Gas.
The present invention compared with the existing technology has clear advantage and advantageous effect.By above technical scheme it is found that this hair In the method for the secondary fluid injection of bright lithium ion battery with aluminum shell, first time fluid injection uses low-viscosity electrolyte, is conducive to battery core to electricity The absorption of liquid is solved, time of repose after fluid injection is reduced；Second of fluid injection is highly conductive high-temperature electrolyte, can make up first time fluid injection The situation that the other performance generated because needing electrolyte flow performance to allow the pole piece absorption more sufficient time shorter well cannot be compatible with, It can ensure that battery performance；For the first time with second of fluid injection the step of（4）Liquid injecting clamp is sent into vacuum (-tight) housing and by lithium ion Inside battery is evacuated, and utilizes the effect in negative pressure enhancing electrolyte A and B injection lithium ion battery；Second of fluid injection time step Suddenly（5）It is filled with gas into vacuum (-tight) housing, realizes that external pressurization promotes electrolyte B fluid injections, works well.In short, the present invention operates Convenient, high-quality reliable, high-efficiency and economic, qualification rate height, is suitble to promoting the use of for the secondary fluid injection of lithium ion battery with aluminum shell.
Specific implementation mode
Below in conjunction with preferred embodiment, to a kind of method of the secondary fluid injection of lithium ion battery with aluminum shell proposed according to the present invention Specific implementation mode, structure, feature and its effect are described in detail as after.
Embodiment 1：
It is highly conductive high-temperature electrolyte that first time fluid injection, which uses low-viscosity electrolyte, second of fluid injection, and first time fluid injection includes Following steps：
（1）Prepare electrolyte：By percentage to the quality, by 10.2% lithium hexafluoro phosphate（LiPF6）, 32.4% ethylene carbonate Ester（EC）, 57.4% dimethyl carbonate（DMC）It is mixed to form electrolyte A；
（2）By lithium ion battery to be injected on liquid injecting clamp；
（3）Electrolyte A is injected in the needle tubing of syringe, and syringe needle is made to be inserted into the liquid injection hole of lithium ion battery；
（4）Liquid injecting clamp is sent into vacuum (-tight) housing and inside lithium ion cell is evacuated, electrolyte A injects lithium ion battery It is interior；
Second of fluid injection includes the following steps：
（1）Prepare electrolyte：By percentage to the quality, by 10.2% lithium hexafluoro phosphate（LiPF6）, 60.6% ethylene carbonate Ester（EC）, 29.2% dimethyl carbonate（DMC）It is mixed to form electrolyte B；
（2）Lithium ion battery to be injected is packed on liquid injecting clamp；
（3）Electrolyte A is injected in the needle tubing of syringe, and syringe needle is made to be inserted into the liquid injection hole of lithium ion battery；
（4）Liquid injecting clamp is sent into vacuum (-tight) housing and inside lithium ion cell is evacuated, electrolyte B injects lithium ion battery It is interior；
（5）Gas is filled with into vacuum (-tight) housing, external pressurization promotes electrolyte B fluid injections；
（6）Liquid injecting clamp is taken out and removes battery, fluid injection finishes.
Embodiment 2：
It is highly conductive high-temperature electrolyte that first time fluid injection, which uses low-viscosity electrolyte, second of fluid injection, and first time fluid injection includes Following steps：
（1）Prepare electrolyte：By percentage to the quality, by 12.2% lithium hexafluoro phosphate（LiPF6）, 28.4% ethylene carbonate Ester（EC）, 59.4% dimethyl carbonate（DMC）It is mixed to form electrolyte A；
（2）By lithium ion battery to be injected on liquid injecting clamp；
（3）Electrolyte A is injected in the needle tubing of syringe, and syringe needle is made to be inserted into the liquid injection hole of lithium ion battery；
（4）Liquid injecting clamp is sent into vacuum (-tight) housing and inside lithium ion cell is evacuated, electrolyte A injects lithium ion battery It is interior；
Second of fluid injection includes the following steps：
（1）Prepare electrolyte：By percentage to the quality, by 12.2% lithium hexafluoro phosphate（LiPF6）, 56.6% ethylene carbonate Ester（EC）, 31.2% dimethyl carbonate（DMC）It is mixed to form electrolyte B；
（2）Lithium ion battery to be injected is packed on liquid injecting clamp；
（3）Electrolyte A is injected in the needle tubing of syringe, and syringe needle is made to be inserted into the liquid injection hole of lithium ion battery；
（4）Liquid injecting clamp is sent into vacuum (-tight) housing and inside lithium ion cell is evacuated, electrolyte B injects lithium ion battery It is interior；
（5）Gas is filled with into vacuum (-tight) housing, external pressurization promotes electrolyte B fluid injections；
（6）Liquid injecting clamp is taken out and removes battery, fluid injection finishes.
Embodiment 3：
It is highly conductive high-temperature electrolyte that first time fluid injection, which uses low-viscosity electrolyte, second of fluid injection, and first time fluid injection includes Following steps：
（1）Prepare electrolyte：By percentage to the quality, by 14.2% lithium hexafluoro phosphate（LiPF6）, 30.4% ethylene carbonate Ester（EC）, 55.4% dimethyl carbonate（DMC）It is mixed to form electrolyte A；
（2）By lithium ion battery to be injected on liquid injecting clamp；
（3）Electrolyte A is injected in the needle tubing of syringe, and syringe needle is made to be inserted into the liquid injection hole of lithium ion battery；
（4）Liquid injecting clamp is sent into vacuum (-tight) housing and inside lithium ion cell is evacuated, electrolyte A injects lithium ion battery It is interior；
Second of fluid injection includes the following steps：
（1）Prepare electrolyte：By percentage to the quality, by 14.2% lithium hexafluoro phosphate（LiPF6）, 58.6% ethylene carbonate Ester（EC）, 27.2% dimethyl carbonate（DMC）It is mixed to form electrolyte B；
（2）Lithium ion battery to be injected is packed on liquid injecting clamp；
（3）Electrolyte A is injected in the needle tubing of syringe, and syringe needle is made to be inserted into the liquid injection hole of lithium ion battery；
（4）Liquid injecting clamp is sent into vacuum (-tight) housing and inside lithium ion cell is evacuated, electrolyte B injects lithium ion battery It is interior；
（5）Gas is filled with into vacuum (-tight) housing, external pressurization promotes electrolyte B fluid injections；
（6）Liquid injecting clamp is taken out and removes battery, fluid injection finishes.
Step when second of fluid injection（5）In gas be nitrogen.
Easy to operate, high-quality reliable, high-efficiency and economic, the qualification rate height of the present invention, is suitble to the secondary fluid injection of lithium ion battery with aluminum shell Promote the use of.
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form, appoint What is simply repaiied to any made by above example according to the technical essence of the invention without departing from technical solution of the present invention content Change, equivalent variations and modification, in the range of still falling within technical solution of the present invention.

Claims (2)

1. a kind of method of the secondary fluid injection of lithium ion battery with aluminum shell, it is characterised in that：First time fluid injection uses low-viscosity electrolyte, Second of fluid injection is highly conductive high-temperature electrolyte, and first time fluid injection includes the following steps：
（1）Prepare electrolyte：By percentage to the quality, by the lithium hexafluoro phosphate of 10.2%-14.2%（LiPF6）, 28.4%- 32.4% ethylene carbonate（EC）, 55.4%-59.4% dimethyl carbonate（DMC）It is mixed to form electrolyte A；
（2）By lithium ion battery to be injected on liquid injecting clamp；
（3）Electrolyte A is injected in the needle tubing of syringe, and syringe needle is made to be inserted into the liquid injection hole of lithium ion battery；
（4）Liquid injecting clamp is sent into vacuum (-tight) housing and inside lithium ion cell is evacuated, electrolyte A injects lithium ion battery It is interior；
Second of fluid injection includes the following steps：
（1）Prepare electrolyte：By percentage to the quality, by the lithium hexafluoro phosphate of 10.2%-14.2%（LiPF6）, 56.6%- 60.6% ethylene carbonate（EC）, 27.2%-31.2% dimethyl carbonate（DMC）It is mixed to form electrolyte B；
（2）Lithium ion battery to be injected is packed on liquid injecting clamp；
（3）Electrolyte A is injected in the needle tubing of syringe, and syringe needle is made to be inserted into the liquid injection hole of lithium ion battery；
（4）Liquid injecting clamp is sent into vacuum (-tight) housing and inside lithium ion cell is evacuated, electrolyte B injects lithium ion battery It is interior；
（5）Gas is filled with into vacuum (-tight) housing, external pressurization promotes electrolyte B fluid injections；
（6）Liquid injecting clamp is taken out and removes battery, fluid injection finishes.
2. the method for the secondary fluid injection of lithium ion battery with aluminum shell as described in claim 1, it is characterised in that：Second of fluid injection time step Suddenly（5）In gas be nitrogen.
CN201810305883.5A 2018-04-08 2018-04-08 Method for secondary liquid injection of aluminum-shell lithium ion battery Active CN108539116B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114006133A (en) * 2021-09-29 2022-02-01 江苏中兴派能电池有限公司 Liquid injection method of laminated soft package lithium ion battery
CN114171800A (en) * 2021-11-24 2022-03-11 蜂巢能源科技有限公司 Lithium supplement battery and preparation method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001089022A1 (en) * 2000-05-19 2001-11-22 Korea Institute Of Science And Technology A lithium secondary battery comprising a super fine fibrous polymer separator film and its fabrication method
CN1387686A (en) * 1999-09-29 2002-12-25 化合价技术股份有限公司 Lactone solvents for electrochemical cells
CN101640285A (en) * 2008-07-28 2010-02-03 上海比亚迪有限公司 Formation method of lithium ion secondary battery
CN102738513A (en) * 2012-01-12 2012-10-17 宁德新能源科技有限公司 Preparation method of lithium ion secondary battery
CN105529429A (en) * 2015-11-10 2016-04-27 河北银隆新能源有限公司 Liquid filling method for cylindrical lithium-ion battery
CN106571442A (en) * 2016-11-02 2017-04-19 天津市捷威动力工业有限公司 Liquid injection device and liquid injection method of polymer lithium battery electrolyte

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1387686A (en) * 1999-09-29 2002-12-25 化合价技术股份有限公司 Lactone solvents for electrochemical cells
WO2001089022A1 (en) * 2000-05-19 2001-11-22 Korea Institute Of Science And Technology A lithium secondary battery comprising a super fine fibrous polymer separator film and its fabrication method
CN101640285A (en) * 2008-07-28 2010-02-03 上海比亚迪有限公司 Formation method of lithium ion secondary battery
CN102738513A (en) * 2012-01-12 2012-10-17 宁德新能源科技有限公司 Preparation method of lithium ion secondary battery
CN105529429A (en) * 2015-11-10 2016-04-27 河北银隆新能源有限公司 Liquid filling method for cylindrical lithium-ion battery
CN106571442A (en) * 2016-11-02 2017-04-19 天津市捷威动力工业有限公司 Liquid injection device and liquid injection method of polymer lithium battery electrolyte

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114006133A (en) * 2021-09-29 2022-02-01 江苏中兴派能电池有限公司 Liquid injection method of laminated soft package lithium ion battery
CN114171800A (en) * 2021-11-24 2022-03-11 蜂巢能源科技有限公司 Lithium supplement battery and preparation method thereof
CN114171800B (en) * 2021-11-24 2023-06-16 蜂巢能源科技有限公司 Lithium supplementing battery and preparation method thereof

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