CN106450471A - Forming and capacity grading method for nude cells of lithium battery based on high-temperature pressure clamp - Google Patents
Forming and capacity grading method for nude cells of lithium battery based on high-temperature pressure clamp Download PDFInfo
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- CN106450471A CN106450471A CN201610896980.7A CN201610896980A CN106450471A CN 106450471 A CN106450471 A CN 106450471A CN 201610896980 A CN201610896980 A CN 201610896980A CN 106450471 A CN106450471 A CN 106450471A
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- Prior art keywords
- forming
- temperature pressure
- battery core
- capacity dividing
- high temperature
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
-
- 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)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a forming and capacity grading method for nude cells of a lithium battery based on a high-temperature pressure clamp. The forming and capacity grading method comprises the following steps: (S1) laminating the nude cells needing to be subjected to the forming and the capacity grading, putting the laminated nude cells into the high-temperature pressure clamp, and fixing the high-temperature pressure clamp by virtue of a clamping plate; (S2) connecting each nude cell needing to be subjected to the forming and the capacity grading to charging equipment through a lead; (S3) carrying out high-temperature pressure forming and capacity grading on the nude cells; (S4) carrying out vacuum encapsulation on the nude cells after the forming and the capacity grading. The forming and capacity grading method has the beneficial effects that a semi-solid polymer lithium battery is provided by virtue of the high-temperature pressure clamp, so that the flat degrees of the battery and a positive electrode and a negative electrode of the battery can be effectively improved, and the time of a forming period and a capacity grading period can be shortened; the forming procedure and the capacity grading procedure are integrated, and links of the loading and unloading of the clamp are omitted, so that the labor cost is substantially lowered, and the damage caused by the transportation of the cells is substantially reduced; and by utilizing the processes of lamination, the high-temperature pressure forming and capacity grading of the nude cells and the vacuum encapsulation, the production period is shortened from 12 days required by a conventional liquid-state lithium battery to 3 days, and the wasting of cell airbag materials is reduced.
Description
Technical field
The present invention relates to a kind of forming and capacity dividing method of lithium battery, more particularly to a kind of lithium electricity based on high temperature pressure fixture
The naked battery core forming and capacity dividing method in pond.
Background technology
With the development of twentieth century microelectric technique, the equipment of miniaturization is increasing, power supply is proposed very high
Require.And widely using with the digital product such as product such as mobile phone, notebook computer, lithium ion battery exists with excellent performance
It is used widely in this kind of product, and progressively to other product applications development.Lithium ion battery is also entered therewith
The large-scale practical stage.Applied earliest is lithium Asia galvanic element, in cardiac pacemaker.Due to lithium Asia battery from
Discharge rate is extremely low, and discharge voltage is very gentle.So that Pacemaker implantation human body life-time service is possibly realized.Lithium-manganese cell typically has
Nominal voltage higher than 3.0 volts, is more suitable for making ic power, is widely used in computer, computer, in wrist-watch.Present lithium
Ion battery is widely applied in mobile phone, notebook computer, electric tool, electric motor car, street lamp stand-by power supply, boat lamp, the little electricity of domestic
On device, it may be said that be maximum application group.
The step of the formation of Li-ion batteries partial volume of employing it is at present：Lamination, top side seal, fluid injection, battery core concora crush, chemical conversion, battery core
Concora crush, Vacuum Package and partial volume.Lower folder being needed after there is chemical conversion, needs upper folder again, cause efficiency very low before partial volume, and
Its chemical conversion and partial volume are divided into be carried out twice, has seriously spun out the production cycle of product, has also consumed substantial amounts of human and material resources and wealth
Power.
Content of the invention
It is an object of the invention to overcoming the deficiencies in the prior art, a kind of lithium battery based on high temperature pressure fixture is provided naked
Battery core forming and capacity dividing method, produces semisolid poly-lithium battery using high temperature pressure fixture, can effectively shorten the production of product
Cycle, while also save cost.
The purpose of the present invention is achieved through the following technical solutions：A kind of lithium battery based on high temperature pressure fixture is naked
Battery core forming and capacity dividing method, as follows the step of described method：
S1, the naked battery core of partial volume to be changed is carried out being put into after lamination in high temperature pressure fixture, and good with Boards wall；
S2, the naked battery core of each partial volume to be changed is wired to charger；
S3, the naked battery core for treating forming and capacity dividing carry out high temperature pressure forming and capacity dividing；
S4, the naked battery core for completing forming and capacity dividing is carried out Vacuum Package.
Described clamping plate includes two-layer heating cloth and one layer of brill plate, bores plate, in the centre of two-layer heating cloth, two-layer is heated cloth
Separate；Heating line is connected with described heating cloth.
Being put into for described forming and capacity dividing is as follows：
S31, first with 0.05C constant-current charge to 3.4V, shelve 5 minutes；
S32, again with 0.1C constant-current constant-voltage charging to 3.95V, shelve 120 minutes；
S33, again with 0.5C constant-current constant-voltage charging to 4.2V, cut-off current 0.05C, shelve 5 minutes；
S34, again with 0.5C constant-current discharge to 3V, shelve 5 minutes；
S35, again with 0.5C constant-current constant-voltage charging to 3.95V, cut-off current 0.05C.
The temperature of described high temperature pressure forming and capacity dividing is 70 DEG C, and pressure is 0.3 ~ 0.4MPa.
The naked battery core of described partial volume to be changed is placed between the interlayer of two clamping plate, by the extruding of clamping plate to logical
The heating cloth that crosses in clamping plate is the pressure and temperature that naked battery core provides forming and capacity dividing needs.
Electrolyte in the naked battery core of described partial volume to be changed is semisolid gel electrolyte.
The composition of described semisolid gel electrolyte includes fluoro lithium salts.
The invention has the beneficial effects as follows：A kind of naked battery core forming and capacity dividing method of the lithium battery based on high temperature pressure fixture, adopts
Battery flatness and both positive and negative polarity interface, and making can be effectively improved with high temperature pressure fixture production semisolid poly-lithium battery
Become, the partial volume time shortened to 10 hours from 24 hours altogether.The technique side for an operation being combined into using chemical conversion, two operations of partial volume
Case, reduces the links such as upper fixture, lower clamp, and cost of labor is greatly lowered, and reduces processing place, eliminates to battery core carrying
Damage.Using lamination, the chemical conversion of naked battery core high temperature pressure and partial volume, Vacuum Package, the production cycle is considerably reduced, from conventional liquid
State lithium battery is reduced to 3 days for 12 days, and reduces the waste of battery core bag material.
Specific embodiment
Technical scheme is detailed further below, but protection scope of the present invention is not limited to following institute
State.
A kind of naked battery core forming and capacity dividing method of the lithium battery based on high temperature pressure fixture, as follows the step of described method：
S1, the naked battery core of partial volume to be changed is carried out being put into after lamination in high temperature pressure fixture, and good with Boards wall；
S2, the naked battery core of each partial volume to be changed is wired to charger；
S3, the naked battery core for treating forming and capacity dividing carry out high temperature pressure forming and capacity dividing；
S4, the naked battery core for completing forming and capacity dividing is carried out Vacuum Package.
Described clamping plate includes two-layer heating cloth and one layer of brill plate, bores plate, in the centre of two-layer heating cloth, two-layer is heated cloth
Separate；Heating line is connected with described heating cloth.
Being put into for described forming and capacity dividing is as follows：
S31, first with 0.05C constant-current charge to 3.4V, shelve 5 minutes；
S32, again with 0.1C constant-current constant-voltage charging to 3.95V, shelve 120 minutes；
S33, again with 0.5C constant-current constant-voltage charging to 4.2V, cut-off current 0.05C, shelve 5 minutes；
S34, again with 0.5C constant-current discharge to 3V, shelve 5 minutes；
S35, again with 0.5C constant-current constant-voltage charging to 3.95V, cut-off current 0.05C.
The temperature of described high temperature pressure forming and capacity dividing is 70 DEG C, and pressure is 0.3 ~ 0.4MPa, conventional liquid lithium-ion electric
The pressure of pond battery core concora crush is 0.8 ~ 1.5MPa, and temperature is 60 DEG C.
The naked battery core of described partial volume to be changed is placed between the interlayer of two clamping plate, by the extruding of clamping plate to logical
The heating cloth that crosses in clamping plate is the pressure and temperature that naked battery core provides forming and capacity dividing needs.
Electrolyte in the naked battery core of described partial volume to be changed is semisolid gel electrolyte.
The composition of described semisolid gel electrolyte includes fluoro lithium salts.
Embodiments of the invention are by the naked battery core of partial volume to be changed is placed between two clamping plate, and connected by wire
Charging device is connected to, the naked battery core of much partial volumes to be changed between multiple clamping plate, can be placed, it is ensured that forming and capacity dividing is naked every time
The quantity of battery core.Clamping plate upper and lower surface has heating cloth, and heating cloth is wired to heater, then treats forming and capacity dividing
Naked battery core heated.On the clamping plate of top, cylinder is installed, pressure and then treating are applied to clamping plate by cylinder
The naked battery core of partial volume is become to apply pressure, the chemical conversion so as to complete to realize the naked battery core of lithium battery in the environment of high temperature pressure fixture divides
Hold.
The above is only the preferred embodiment of the present invention, it should be understood that the present invention is not limited to described herein
Form, is not to be taken as the exclusion to other embodiment, and can be used for various other combinations, modification and environment, and can be at this
In the text contemplated scope, it is modified by the technology or knowledge of above-mentioned teaching or association area.And those skilled in the art are entered
The change of row and change, then all should be in the protection domains of claims of the present invention without departing from the spirit and scope of the present invention
Interior.
Claims (7)
1. the naked battery core forming and capacity dividing method of a kind of lithium battery based on high temperature pressure fixture, it is characterised in that：Described method
Step is as follows：
S1, the naked battery core of partial volume to be changed is carried out being put into after lamination in high temperature pressure fixture, and good with Boards wall；
S2, the naked battery core of each partial volume to be changed is wired to charger；
S3, the naked battery core for treating forming and capacity dividing carry out high temperature pressure forming and capacity dividing；
S4, the naked battery core for completing forming and capacity dividing is carried out Vacuum Package.
2. the naked battery core forming and capacity dividing method of a kind of lithium battery based on high temperature pressure fixture according to claim 1, which is special
Levy and be：Described clamping plate includes two-layer heating cloth and one layer of brill plate, bores plate, in the centre of two-layer heating cloth, two-layer is heated cloth
Separate；Heating line is connected with described heating cloth.
3. the naked battery core forming and capacity dividing method of a kind of lithium battery based on high temperature pressure fixture according to claim 1, which is special
Levy and be：Being put into for described forming and capacity dividing is as follows：
S31, first with 0.05C constant-current charge to 3.4V, shelve 5 minutes；
S32, again with 0.1C constant-current constant-voltage charging to 3.95V, shelve 120 minutes；
S33, again with 0.5C constant-current constant-voltage charging to 4.2V, cut-off current 0.05C, shelve 5 minutes；
S34, again with 0.5C constant-current discharge to 3V, shelve 5 minutes；
S35, again with 0.5C constant-current constant-voltage charging to 3.95V, cut-off current 0.05C.
4. the naked battery core forming and capacity dividing method of a kind of lithium battery based on high temperature pressure fixture according to claim 1, which is special
Levy and be：The temperature of described high temperature pressure forming and capacity dividing is 70 DEG C, and pressure is 0.3 ~ 0.4MPa.
5. the naked battery core forming and capacity dividing method of a kind of lithium battery based on high temperature pressure fixture according to claim 1, which is special
Levy and be：The naked battery core of described partial volume to be changed is placed between the interlayer of two clamping plate, by the extruding of clamping plate to logical
The heating cloth that crosses in clamping plate is the pressure and temperature that naked battery core provides forming and capacity dividing needs.
6. the naked battery core forming and capacity dividing method of a kind of lithium battery based on high temperature pressure fixture according to claim 1, which is special
Levy and be：Electrolyte in the naked battery core of described partial volume to be changed is semisolid gel electrolyte.
7. the naked battery core forming and capacity dividing method of a kind of lithium battery based on high temperature pressure fixture according to claim 6, which is special
Levy and be：The composition of described semisolid gel electrolyte includes fluoro lithium salts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610896980.7A CN106450471A (en) | 2016-10-14 | 2016-10-14 | Forming and capacity grading method for nude cells of lithium battery based on high-temperature pressure clamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610896980.7A CN106450471A (en) | 2016-10-14 | 2016-10-14 | Forming and capacity grading method for nude cells of lithium battery based on high-temperature pressure clamp |
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| CN106450471A true CN106450471A (en) | 2017-02-22 |
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| CN201610896980.7A Pending CN106450471A (en) | 2016-10-14 | 2016-10-14 | Forming and capacity grading method for nude cells of lithium battery based on high-temperature pressure clamp |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359375A (en) * | 2017-06-20 | 2017-11-17 | 中航锂电（洛阳）有限公司 | A kind of partial volume method of lithium ion battery |
| CN108701877A (en) * | 2017-07-12 | 2018-10-23 | 深圳市大疆创新科技有限公司 | Battery core partial volume method and apparatus |
| CN109390634A (en) * | 2018-10-15 | 2019-02-26 | 珠海光宇电池有限公司 | A kind of rapid forming method improving cathode SEI high-temperature stability |
| CN109390640A (en) * | 2017-08-08 | 2019-02-26 | 深圳格林德能源有限公司 | A kind of technique that polymer Li-ion battery screens capacity with charging capacity |
| CN110970678A (en) * | 2019-12-31 | 2020-04-07 | 安普瑞斯（无锡）有限公司 | Rapid formation and grading method for improving performance of polymer lithium ion battery |
| CN112582680A (en) * | 2020-11-30 | 2021-03-30 | 宁波维科电池有限公司 | Method for forming lithium ion battery into component capacity |
| CN114284587A (en) * | 2021-12-27 | 2022-04-05 | 惠州亿纬锂能股份有限公司 | Cell formation and capacity grading method |
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| CN102856590A (en) * | 2012-09-21 | 2013-01-02 | 深圳市美拜电子有限公司 | Forming and capacity grading method of lithium ion secondary battery |
| CN203377337U (en) * | 2013-07-15 | 2014-01-01 | 毛铁军 | Equipment and clamp for formation process of soft package lithium ion battery |
| CN105633454A (en) * | 2014-11-08 | 2016-06-01 | 江苏海四达电源股份有限公司 | High-voltage and wide-temperature amplitude polymer lithium battery for 3C digital camera and fabrication method of polymer lithium battery |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359375A (en) * | 2017-06-20 | 2017-11-17 | 中航锂电（洛阳）有限公司 | A kind of partial volume method of lithium ion battery |
| CN107359375B (en) * | 2017-06-20 | 2019-07-12 | 中航锂电（洛阳）有限公司 | A kind of partial volume method of lithium ion battery |
| CN108701877A (en) * | 2017-07-12 | 2018-10-23 | 深圳市大疆创新科技有限公司 | Battery core partial volume method and apparatus |
| WO2019010657A1 (en) * | 2017-07-12 | 2019-01-17 | 深圳市大疆创新科技有限公司 | Capacity grading method and apparatus for battery cell |
| CN109390640A (en) * | 2017-08-08 | 2019-02-26 | 深圳格林德能源有限公司 | A kind of technique that polymer Li-ion battery screens capacity with charging capacity |
| CN109390634A (en) * | 2018-10-15 | 2019-02-26 | 珠海光宇电池有限公司 | A kind of rapid forming method improving cathode SEI high-temperature stability |
| CN110970678A (en) * | 2019-12-31 | 2020-04-07 | 安普瑞斯（无锡）有限公司 | Rapid formation and grading method for improving performance of polymer lithium ion battery |
| CN112582680A (en) * | 2020-11-30 | 2021-03-30 | 宁波维科电池有限公司 | Method for forming lithium ion battery into component capacity |
| CN114284587A (en) * | 2021-12-27 | 2022-04-05 | 惠州亿纬锂能股份有限公司 | Cell formation and capacity grading method |
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Application publication date: 20170222 |