CN109524721A - A kind of preparation method of buckle type lithium-ion half-cell - Google Patents
A kind of preparation method of buckle type lithium-ion half-cell Download PDFInfo
- Publication number
- CN109524721A CN109524721A CN201811306231.XA CN201811306231A CN109524721A CN 109524721 A CN109524721 A CN 109524721A CN 201811306231 A CN201811306231 A CN 201811306231A CN 109524721 A CN109524721 A CN 109524721A
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- China
- Prior art keywords
- battery shell
- positive
- nickel sheet
- cell
- plus
- 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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- 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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a kind of preparation methods of buckle type lithium-ion half-cell, comprising the following steps: positive plate a, is placed on to positive battery shell middle position, then uses mash welder by positive plate together with the close solder bond of positive battery shell；B, nickel sheet is placed on negative battery shell middle position, then uses mash welder by nickel sheet together with the close solder bond of negative battery shell；C, the positive battery shell being welded is laid flat, then solder joint patch conducting resinl → plus electrolyte → plus diaphragm → plus electrolyte → plus lithium piece → adding spring shim → have been welded with negative battery shell → sealing of nickel sheet.Buckle type lithium-ion half-cell structure of the invention is simple, stablizes, qualification rate height, and battery with two side terminals, cycle life are significantly improved.
Description
Technical field
The present invention relates to field of lithium ion battery, more particularly, to a kind of preparation method of buckle type lithium-ion half-cell.
Background technique
The drive developed in recent years by lithium ion battery and its downstream industry, the growth of lithium electricity positive electrode is more swift and violent,
Carry out assessment material performance using button half-cell in terms of developing material, not only simplifies the process of assessment, more accelerate material and open
The progress of hair.However in the preparation process of current button type battery, often due to positive plate can not be fixed in battery case, lead
Cause positive plate not placed in the middle in battery case or the phenomenon that with battery case poor contact, so as to cause the button cell qualification rate of production
Low, consistency is poor, causes the performance of positive electrode that cannot bring into play completely.A kind of button is disclosed in 103618112 B of CN
The assembly method of formula lithium ion battery.Although still solder joint will form recess and influence for its assembly for realizing fixed positive plate
Cycle performance of battery, and it is not able to achieve the fixation of nickel sheet, it is therefore desirable to positive plate and nickel sheet can be fixed on electricity by one kind
Pond shell center and solder joint is smooth, preparation is simple and it is made to contact the good preparation side for improving buckle type lithium-ion half-cell performance
Method.
Summary of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, a kind of preparation of buckle type lithium-ion half-cell is provided
Positive plate and nickel sheet can be fixed on battery case center by method, and preparation is simple, and contact is good, improve buckle type lithium-ion
The performance of half-cell.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of preparation method of buckle type lithium-ion half-cell, comprising the following steps:
A, positive plate is placed on positive battery shell middle position, then uses mash welder by positive plate and positive battery shell
Close solder bond is together；
B, nickel sheet is placed on negative battery shell middle position, it is then using mash welder that nickel sheet and negative battery shell is close
Solder bond is together；
C, the positive battery shell being welded is laid flat, then solder joint patch conducting resinl → plus electrolyte → plus diaphragm → power-up solution
Liquid → plus lithium piece → adding spring shim →, have been welded with negative battery shell → sealing of nickel sheet.
The compacted density of the positive plate is 2.7~2.9g/cm3, surface density be 10~11mg/cm2, lithium piece is with a thickness of 0.5
~1.0mm, nickel sheet is with a thickness of 0.15~0.3mm, 1.8~2.6mm of buckle type lithium-ion half-cell overall thickness.
The beneficial effects of the present invention are: the buckle type lithium-ion half-cell structure of preparation is simple, stablizes, qualification rate height, and
Consistency, the cycle life of battery performance are significantly improved.
Specific embodiment
Equipment used in buckle type lithium-ion half-cell preparation method of the present invention is portable hand-held formula mash welder.
Battery used in following embodiment is all 2025 type button cells, and positive electrode is nickelic ternary, in order to right
Than analysis.
Embodiment 1:
A kind of preparation method of buckle type lithium-ion half-cell, comprising the following steps:
A, positive plate is placed on positive battery shell middle position, then uses mash welder by positive plate and positive battery shell
Close solder bond is together；
B, nickel sheet is placed on negative battery shell middle position, it is then using mash welder that nickel sheet and negative battery shell is close
Solder bond is together；
C, the positive battery shell being welded is laid flat, then solder joint patch conducting resinl → plus electrolyte → plus diaphragm → power-up solution
Liquid → plus lithium piece → adding spring shim →, have been welded with negative battery shell → sealing of nickel sheet.
The compacted density of the positive plate is 2.7~2.9g/cm3, surface density be 10~11mg/cm2, lithium piece is with a thickness of 0.5
~1.0mm, nickel sheet is with a thickness of 0.15~0.3mm, 1.8~2.6mm of buckle type lithium-ion half-cell overall thickness.
By measuring the chemical property of battery respectively, qualification rate, capacity and consistency are checked.According to the method for the present embodiment
The assembly of 8 batteries is completed, and battery is detected, the gram volume data for recording battery are as follows:
Embodiment 2:
It is different in order to compare the battery performance of the invention prepared with existing preparation method, it below will be by existing preparation
Method prepares one group of battery and compares.
It is existing → diaphragm to be added → electrolyte → plus lithium piece → to be added to add nickel sheet the preparation method comprises the following steps: anode cover is laid flat → adds positive plate
→ plus negative electrode casing → sealing.
The assembly of 8 batteries is completed according to the method for the present embodiment, and battery is detected, and records the gram volume number of battery
According to as follows:
Embodiment 3:
In order to compare the present invention and not paste the cycle performance of battery that conducting resinl is prepared different, will be led below by not pasting
Electric gluing method prepares one group of battery and compares.
The preparation method is as follows:
A, positive plate is placed on positive battery shell middle position, then uses mash welder by positive plate and positive battery shell
Close solder bond is together；
B, nickel sheet is placed on negative battery shell middle position, it is then using mash welder that nickel sheet and negative battery shell is close
Solder bond is together；
C, the positive battery shell being welded is laid flat → is added electrolyte → plus diaphragm → plus electrolyte → plus lithium piece → plus bullet
Negative electrode casing → sealing of spring gasket → be welded with nickel sheet.
The assembly of 8 batteries is completed according to the method for the present embodiment, and battery is detected, and records the gram volume number of battery
According to as follows:
Positive and negative electrode battery case is welded to positive plate, nickel sheet it can be seen from above each resulting data of example
It fixes position and pastes conducting resinl in positive solder joint, all improve stability of positive plate during detaining electrically prepared, improve just
Pole piece and anode cover, nickel sheet are effectively contacted with negative electrode casing, and conductivity increases, than do not weld the battery gram volume prepared,
Consistency, cycle performance all increase, for prevent desoldering, solder joint recess and increase additional effort, in actual operation with
It welds subject to two points and sticks conducting resinl.
The preparation method of buckle type lithium-ion half-cell provided by the present invention, the battery assembled the 1C discharge capacity that is averaged are
162.4mAh/g, capacity improve 3-4mAh/g, and 300 weeks conservation rates of circulating battery improve 3.8%；Welding patch conducting resinl is compared to weldering
It connects and does not paste conducting resinl, 300 weeks conservation rates of the circulating battery prepared improve 1.5%.It can be seen that through the invention can be former
It does the problem of button cell is easy to appear to prevent, is all leaping for a matter on the whole for developing material, and side of the present invention
Method is simple, not only simplifies the process of assessment, more accelerates the progress of developing material, increases the performance of enterprises, be worthy to be popularized with
Using.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (2)
1. a kind of preparation method of buckle type lithium-ion half-cell, which comprises the following steps:
A, positive plate is placed on positive battery shell middle position, it is then using mash welder that positive plate and positive battery shell is close
Solder bond is together；
B, nickel sheet is placed on negative battery shell middle position, is then closely welded nickel sheet and negative battery shell using mash welder
It is combined together；
C, the positive battery shell being welded is laid flat, then solder joint patch conducting resinl → plus electrolyte → plus diaphragm → plus electrolyte →
Lithium piece → adding spring shim → is added to be welded with negative battery shell → sealing of nickel sheet.
2. a kind of preparation method of buckle type lithium-ion half-cell as described in claim 1, which is characterized in that the pressure of the positive plate
Real density is 2.7~2.9g/cm3, surface density be 10~11mg/cm2, lithium piece is with a thickness of 0.5~1.0mm, and nickel sheet is with a thickness of 0.15
~0.3mm, 1.8~2.6mm of buckle type lithium-ion half-cell overall thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811306231.XA CN109524721A (en) | 2018-11-05 | 2018-11-05 | A kind of preparation method of buckle type lithium-ion half-cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811306231.XA CN109524721A (en) | 2018-11-05 | 2018-11-05 | A kind of preparation method of buckle type lithium-ion half-cell |
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| CN109524721A true CN109524721A (en) | 2019-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811306231.XA Pending CN109524721A (en) | 2018-11-05 | 2018-11-05 | A kind of preparation method of buckle type lithium-ion half-cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325421A (en) * | 2021-12-10 | 2022-04-12 | 山东精工电子科技有限公司 | Method for testing button type half cell made of lithium ion battery electrode material |
-
2018
- 2018-11-05 CN CN201811306231.XA patent/CN109524721A/en active Pending
Non-Patent Citations (3)
| Title |
|---|
| 中国科协青少年科技中心编: "《第二十八届全国青少年科技创新大赛获奖作品集》", 30 November 2013, 北京：科学普及出版社 * |
| 李国欣主编: "《新型化学电源技术概论》", 31 May 2007, 上海：上海科学技术出版社 * |
| 陈泽华等: "《纳米ε-VOPO4的制备与电化学性能研究》", 30 September 2016, 长春：吉林大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325421A (en) * | 2021-12-10 | 2022-04-12 | 山东精工电子科技有限公司 | Method for testing button type half cell made of lithium ion battery electrode material |
| CN114325421B (en) * | 2021-12-10 | 2023-09-19 | 山东精工电子科技股份有限公司 | Method for testing button type half-cell manufactured by electrode material of lithium ion battery |
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Application publication date: 20190326 |
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