CN109309265A - A kind of smooth improvement chemical synthesis technology of high voltage polymer Li-ion battery - Google Patents
A kind of smooth improvement chemical synthesis technology of high voltage polymer Li-ion battery Download PDFInfo
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- CN109309265A CN109309265A CN201710634800.2A CN201710634800A CN109309265A CN 109309265 A CN109309265 A CN 109309265A CN 201710634800 A CN201710634800 A CN 201710634800A CN 109309265 A CN109309265 A CN 109309265A
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- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 16
- 229920000642 polymer Polymers 0.000 title claims abstract description 11
- 238000005516 engineering process Methods 0.000 title claims abstract description 9
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 9
- 230000006872 improvement Effects 0.000 title claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 239000000126 substance Substances 0.000 claims abstract description 12
- 238000007493 shaping process Methods 0.000 claims abstract description 6
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims description 6
- 239000003792 electrolyte Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000010287 polarization Effects 0.000 abstract description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
-
- 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
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- 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
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- 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 kind of smooth improvement chemical synthesis technology of high voltage polymer Li-ion battery, which is by being melted into different temperature, charged state (SOC), pressure and step by step under the time and realizing battery shaping simultaneously.The present invention is reasonably matched by pressure value, time, electric current and the temperature for influencing battery polarization to chemical conversion parameter, gas, which is produced, in battery battery core maximizes the stage, it properly reduces temperature and applies certain pressure and shelved, significantly significantly reduce gas expansion degree, lead to the stress of cell deformation inside when effectively eliminating release Battery formation, to improve the consistency of cell thickness significantly, battery flatness ensure that；Make operational sequences such as traditional " stand-pre- chemical conversion-standing-benefit electricity-plus clamping plate chemical conversion " merge all-in-one machine previous step in place, significantly shorten the chemical conversion time, improve production efficiency.
Description
Technical field
The present invention relates to technical field of lithium-ion battery, and in particular to arrives a kind of high voltage polymer Li-ion battery
Smooth improvement chemical synthesis technology.
Background technique
As the abundant and consumer of 3C terminal function is to usage experience (such as the stream of the fine and smooth degree of picture, game
Smooth property, the length in cruise duration etc.) desired increasingly promotion, client requires increasingly the energy density of 3C lithium ion battery
It is high.It is limited by the lightening trend of terminal individual, under the premise of can not promote small product size, improves the unit of lithium ion battery
Volume energy density becomes the urgent need of major lithium ion battery manufacturers.4.4V high voltage polymer Li-ion battery produces at present
Product generally use, and under the premise of the raising due to requiring in energy density and battery volume cannot increase, are promoted
The energy density of 4.4V high voltage polymer Li-ion battery is often just outer by the compacted density of raising positive and negative pole material, reduction
The methods of aluminum plastic film thickness is packed to realize, but these methods often lead to occur the polymerization of 4.4V high voltage in current production process
The obvious poor phenomenon of object lithium ion battery flatness, the quality problems such as cause often to occur feeling like jelly because of battery, and then by visitor
The phenomenon that family is seriously complained.
Summary of the invention
The purpose of the present invention is to provide a kind of smooth improvement chemical synthesis technologies of high voltage polymer Li-ion battery, to solve
Technical problem mentioned above in the background art.To achieve the above object, the technical solution of the present invention is as follows:
A kind of smooth improvement chemical synthesis technology of high voltage polymer Li-ion battery, specific step is as follows,
(1) battery battery core is subjected to vacuum high-temperature baking and removes moisture removal, then infused electrolyte and carry out sealing and high temperature and shelve, make
Electrolyte quickly infiltrates；
(2) battery after shelving high temperature is placed in set segmentation transformation Force control system, temperature control system, time controlled system, chemical conversion
The integrated formation device of charging/discharging function carries out shaping for a period of time under 45 DEG C of high-temperature high-pressure state, eliminates in battery
Portion winds stress, keeps the reaction at positive/negative plate interface good, guarantees battery flatness, wherein the time is set as 15min, and pressure is set
It is set to 0.3Mpa；
(3) first battery is charged to the 40%SOC of electricity, then under 45 DEG C of high temperature of temperature constant state, battery constant pressure integer is allowed to protect
30min is held, pressure is set as 0.6Mpa；Then the battery after constant pressure being formed increases pressure and temperature, makes battery in high temperature 70
100%SOC is charged in the state of DEG C, pressure is set as 1.0Mpa, and the time is set as 60min；
(4) temperature is reduced, applies certain pressure to battery in the environment of room temperature, battery is made gradually to be formed, pressure is set as
0.2Mpa, time are set as 30min；
(5) battery is evacuated, sealed and partial volume.
Compared with prior art, the beneficial effects of the present invention are:
(1) it is reasonably matched by the pressure value, time, electric current and the temperature that influence battery polarization to chemical conversion parameter,
Battery battery core produces gas and maximizes the stage, properly reduces temperature and applies certain pressure and shelved, is significantly effectively reduced
Gas expansion degree, when effectively eliminating release Battery formation inside lead to the stress of cell deformation, to improve significantly
The consistency of cell thickness, ensure that battery flatness；
(2) merge operational sequences such as traditional " standing-pre- chemical conversion-standing-benefit electricity-plus clamping plate chemical conversions " in all-in-one machine previous step
In place, the chemical conversion time is significantly shortened, production efficiency is improved.
Detailed description of the invention
Fig. 1 is to test cell thickness position view using laser thickness gauge.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution of the present invention is clearly and completely described, it is clear that retouched
The embodiment stated is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field ordinary skill and equipment personnel every other embodiment obtained without making creative work, belong to
The scope of protection of the invention.
Comparative example:
Conventional method: our company's model cobalt acid lithium system battery 355770, batch 2017030901, capacity 2500mAh electricity are taken
Pond 5PCS is melted into, number 1#-5#, and battery is infused after electrolyte quiescence in high temperature 12 hours, hot pressing shaping after standing, after shaping
Under constant pressure state, it is charged to 3.8V using 500mA electric current under normal temperature environment, then the electric current of 2500mA is charged to electricity
4.4V is pressed, battery is evacuated after charging complete, is sealed and partial volume, tests battery using laser thickness tester after partial volume
The thickness of four angle position thickness of body and core-center point.
Embodiment:
The smooth improvement chemical synthesis technology of a kind of high voltage (4.4V) polymer Li-ion battery in the embodiment of the present invention:
Our company's model cobalt acid lithium system battery 355770, batch 2017030901 are taken, capacity 2500mAh battery 5PCS is carried out
Chemical conversion, number 6#-10#
(1) battery battery core is subjected to vacuum high-temperature baking and removes moisture removal, then infused electrolyte and carry out sealing and high temperature and shelve, make
Electrolyte quickly infiltrates；
(2) battery after shelving high temperature is placed in set segmentation transformation Force control system, temperature control system, time controlled system, chemical conversion
The integrated formation device of charging/discharging function carries out shaping for a period of time under 45 DEG C of high-temperature high-pressure state, eliminates in battery
Portion winds stress, keeps the reaction at positive/negative plate interface good, guarantees battery flatness, wherein the time is set as 15min, and pressure is set
It is set to 0.3Mpa；
(3) first battery is charged to the 40%SOC of electricity, then under 45 DEG C of high temperature of temperature constant state, battery constant pressure integer is allowed to protect
30min is held, pressure is set as 0.6Mpa；Then the battery after constant pressure being formed increases pressure and temperature, makes battery in high temperature 70
100%SOC(voltage is charged in the state of DEG C to 4.4V), pressure is set as 1.0Mpa, and the time is set as 60min；
(4) temperature is reduced, applies certain pressure to battery in the environment of room temperature, battery is made gradually to be formed, pressure is set as
0.2Mpa, time are set as 30min；
(5) battery is evacuated, sealed and partial volume.
Four angle position thickness of laser thickness tester test battery core and the thickness of core-center point are used after partial volume.
The following table 1 is the thickness data comparison of comparative example and embodiment battery testing, is obtained from thickness data and statistical analysis,
The 1#-5# cell thickness uniform averaging standard deviation of comparative example is 0.02, and the one of 6#-10# cell thickness of the embodiment of the present invention
Causing mild-natured equal standard deviation is 0.006, not in an order of magnitude, therefore uses chemical synthesis technology 4.4V high produced of the invention
Voltage polymer Li-ion battery flatness is substantially better than comparative example.
Table 1: comparative example and the produced battery of embodiment are charged to the thickness data comparison after electricity 100%SOC
(battery nominal thickness is 3.55mm ± 0.2mm)
The above content is just an example and description of the concept of the present invention, affiliated those skilled in the art are to institute
The specific embodiment of description does various modifications or additions or is substituted in a similar manner, without departing from the structure of invention
Think or beyond the scope defined by this claim, is within the scope of protection of the invention.
Claims (1)
1. a kind of smooth improvement chemical synthesis technology of high voltage polymer Li-ion battery, which is characterized in that the technique includes following step
It is rapid:
(1) battery battery core is subjected to vacuum high-temperature baking and removes moisture removal, then infused electrolyte and carry out sealing and high temperature and shelve；
(2) battery after shelving high temperature is placed in set segmentation transformation Force control system, temperature control system, time controlled system, chemical conversion
The integrated formation device of charging/discharging function carries out shaping 15min under 45 DEG C of high temperature 0.3Mpa high pressure conditions；
(3) first battery is charged to the 40%SOC of electricity, then under 45 DEG C of high temperature of temperature constant state, battery constant pressure integer is allowed to protect
30min is held, pressure is set as 0.6Mpa；Then the battery after constant pressure being formed increases pressure and temperature, makes battery in high temperature 70
100%SOC is charged in the state of DEG C, pressure is set as 1.0Mpa, and the time is set as 60min；
(4) temperature is reduced, applies certain pressure to battery in the environment of room temperature, battery is made gradually to be formed, pressure is set as
0.2Mpa, time are set as 30min；
(5) battery is evacuated, sealed and partial volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710634800.2A CN109309265A (en) | 2017-07-29 | 2017-07-29 | A kind of smooth improvement chemical synthesis technology of high voltage polymer Li-ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710634800.2A CN109309265A (en) | 2017-07-29 | 2017-07-29 | A kind of smooth improvement chemical synthesis technology of high voltage polymer Li-ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109309265A true CN109309265A (en) | 2019-02-05 |
Family
ID=65207481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710634800.2A Pending CN109309265A (en) | 2017-07-29 | 2017-07-29 | A kind of smooth improvement chemical synthesis technology of high voltage polymer Li-ion battery |
Country Status (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323481A (en) * | 2019-04-29 | 2019-10-11 | 宜宾茂泰业科技股份有限公司 | A kind of hot pressing chemical synthesizing method of high magnification soft-package battery |
| CN111774437A (en) * | 2020-07-28 | 2020-10-16 | 宁波江丰电子材料股份有限公司 | Pressurizing and shaping method for target material after welding |
| CN112665678A (en) * | 2020-12-28 | 2021-04-16 | 湖北亿纬动力有限公司 | Battery gas production amount measuring device and battery gas production amount measuring method |
| CN113363422A (en) * | 2021-03-31 | 2021-09-07 | 万向一二三股份公司 | Preparation method of low-negative-electrode-expansion long-cycle lithium ion battery and lithium ion battery |
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Address after: 518105 4th Floor, Building A2, Liyuan Bay Industrial Park, 168 Honghu Road, Yanchuan, Songgang, Baoan District, Shenzhen City, Guangdong Province Applicant after: SHENZHEN GRAND POWERSOURCE Co.,Ltd. Address before: 518105 4th Floor, Building A2, Liyuan Bay Industrial Park, 168 Honghu Road, Yanchuan, Songgang, Baoan District, Shenzhen City, Guangdong Province Applicant before: SHENZHEN GRAND POWERSOURCE Co.,Ltd. |
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Application publication date: 20190205 |
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| RJ01 | Rejection of invention patent application after publication |