CN105655628A - Quick drying method of battery cell - Google Patents
Quick drying method of battery cell Download PDFInfo
- Publication number
- CN105655628A CN105655628A CN201610164194.8A CN201610164194A CN105655628A CN 105655628 A CN105655628 A CN 105655628A CN 201610164194 A CN201610164194 A CN 201610164194A CN 105655628 A CN105655628 A CN 105655628A
- Authority
- CN
- China
- Prior art keywords
- battery core
- drying method
- battery cell
- plate
- quickly drying
- 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.)
- Granted
Links
- 238000001035 drying Methods 0.000 title claims abstract description 41
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims abstract description 12
- 238000001816 cooling Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000009835 boiling Methods 0.000 abstract description 2
- 229960005419 nitrogen Drugs 0.000 description 11
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 238000010792 warming 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
- H01M10/04—Construction or manufacture in general
- H01M10/0436—Small-sized flat cells or batteries for portable equipment
-
- 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 belongs to the technical field of battery manufacturing, in particular relates to a quick drying method of a battery cell. The quick drying method comprises the following steps: (1) putting the battery cell in a sealed cavity with a heating panel, wherein the heating panel tightly clings to the battery cell; (2) heating the battery cell to 85+/-5 DEG C through the heating panel, keeping for 10 to 20 minutes, then vacuumizing the sealed cavity to -99kpa to -100kpa, and keeping for 1 to 2 minutes under the vacuum degree of -99kpa to -100kpa; (3) filling the sealed cavity with nitrogen or dry gas until the pressure in the sealed cavity is normal pressure; (4) sequentially performing step (2) and step (3) for once to six times; (5) stopping heating the battery cell by the heating panel, and taking out the battery cell after the battery cell is cooled naturally, thereby completing drying treatment of the battery cell. According to the quick drying method disclosed by the invention, through a form that the heating panel is directly in contact with the battery cell for heating, the heating cycle of the battery cell is greatly shortened; a principle that the boiling point of water is reduced under a high vacuum environment is combined, so that the effect of quickly reducing the water content of the battery cell is achieved.
Description
Technical field
The invention belongs to battery manufacture technical field, it is specifically related to a kind of battery core quickly drying method.
Background technology
Lithium ion battery owing to having energy density height, output voltage height, have extended cycle life, the advantage such as environmental pollution is little, obtain extensively with regard to use in small size digital electronic product, also have broad application prospects in the field such as electromobile, aerospace. But, fast-developing with lithium ion battery industry, industry lithium ion battery price, performance, product hand over phase control competition fierce, low cost, high performance-price ratio battery become the weathervane of current lithium ion battery industry competition, for improving the competitive power of battery in market, high performance-price ratio, short product hand over the battery core product of phase to be the trump to success on market.
Soft bag lithium ionic cell needs the steam removed in battery core before fluid injection is toasted, toasted by the cavity type vacuum baking box of routine, different battery core baking times needs 24-48 hour, need continuous heating simultaneously, vacuumize, be filled with multiple operation cycle such as nitrogen or dry gas, reach the drying effect of lithium battery electric core, it is necessary to the time of at substantial and energy loss. If the drying means of a kind of lithium ion battery fast and efficiently can be found, reduce energy consumption, shorten the production time, the production cycle of manufacture certainly will be shortened and improve production efficiency, reduce the production cost of enterprise.
Summary of the invention
It is an object of the invention to: for the deficiencies in the prior art, it is provided that a kind of battery core quickly drying method, to shorten the production time, it is to increase production efficiency, reduce the production cost of enterprise.
In order to realize above-mentioned purpose, the present invention adopts following technical scheme:
A kind of battery core quickly drying method, comprises the following steps:
(1), by battery core putting into the airtight cavity with hot-plate, described battery core is close to by described hot-plate;
(2), by described hot-plate described battery core is heated to 85 �� 5 DEG C, keeps 10 ~ 20min, then airtight cavity is evacuated to-99kpa ~-100kpa, and keeps 1 ~ 2min at vacuum tightness-99kpa ~-100kpa;
(3), being filled with in nitrogen to described airtight cavity in described airtight cavity is normal pressure;
(4), step (2) and (3) carry out 1 ~ 6 time successively;
(5), stop described hot-plate battery core is heated, treat battery core naturally cooling, and take out battery core, complete the drying treatment of battery core.
Wherein, described airtight cavity is evacuated to-99kpa ~-100kpa and needs 2 ~ 5min, described airtight cavity is filled with nitrogen to normal pressure and needs about 1min, battery core naturally cooling needs about 40min, if it thus is seen that circulate 4 times in step (2) and (3), about 56 ~ 108min can complete the drying to described battery core, substantially reduce drying cycle, take full advantage of the heat energy of hot-plate simultaneously, effectively reduce energy consumption. In addition, the heat-up time of described hot-plate and Heating temperature can also adjust setting, under the requirement meeting battery core water-content, shorten the heat-up time to described battery core as far as possible, to improve the rate of drying to battery core, improve production efficiency further, reduce production cost.
Wherein, being vacuumized by described airtight cavity and adopt external vacuum source, described nitrogen can adopt Nitrogen plant nitrogen or outsourcing nitrogengas cylinder to connect described airtight cavity and obtain.
As the improvement of a kind of battery core quickly drying method of the present invention, described hot-plate is provided with and is no less than two layers, and battery core is arranged between described hot-plate, so that described hot-plate is separately positioned on the relative two sides of battery core, and described battery core is exerted pressure, it is ensured that hot-plate and battery core surface contact. Described battery core is exerted pressure by described hot-plate, ensures that described hot-plate and described battery core fit tightly, to ensure the efficiency of thermal conduction, greatly accelerates the heating efficiency to described battery core.
As the improvement of a kind of battery core quickly drying method of the present invention, the purity of described nitrogen is not less than 99.99%.
As the improvement of a kind of battery core quickly drying method of the present invention, it is filled with dry gas to described airtight cavity and replaces above-mentioned nitrogen. The dry gas being filled with can be obtained by dehumidifier.
As the improvement of a kind of battery core quickly drying method of the present invention, the relative humidity of described dry gas is not more than 1%. Bring moisture into again to during to avoid being filled with described dry gas described airtight cavity, affect drying effect.
As the improvement of a kind of battery core quickly drying method of the present invention, the dew point of described dry gas is not higher than-28 DEG C. Prevent described dry gas from liquefying in airtight cavity.
As the improvement of a kind of battery core quickly drying method of the present invention, described hot-plate can vertically arrange and also can be horizontally disposed with.
As the improvement of a kind of battery core quickly drying method of the present invention, the number of times that step (2) and (3) are repeated successively is 4 times.
As the improvement of a kind of battery core quickly drying method of the present invention, described battery core is heated to 85 �� 5 DEG C by described hot-plate in (2) by step, keeps 15min.
The useful effect of the present invention is: provide a kind of battery core quickly drying method, direct and the described battery core contact heating by described hot-plate, greatly shorten the heating period to battery core, and the boiling point of water is reduced in conjunction with vacuum environment, so that the effect of the water-content of battery core described in rapid decrease can be reached.
Accompanying drawing explanation
Fig. 1 is the structural representation of the airtight cavity that hot-plate is vertically arranged.
Fig. 2 is the structural representation of the horizontally disposed airtight cavity of hot-plate.
Embodiment
Below in conjunction with embodiment and Figure of description, the present invention and useful effect thereof are described in further detail, but, the specific embodiment of the present invention is not limited thereto.
A kind of battery core quickly drying method, comprises the following steps:
(1), by battery core putting into airtight cavity, described airtight cavity is provided with Multi-layer warming plate, and described hot-plate is respectively on the two sides that battery core is relative, and described battery core is close to by described hot-plate, and described battery core is exerted pressure;
(2), by described hot-plate described battery core is heated to 85 �� 5 DEG C, and keeps 10 ~ 20min, then airtight cavity is evacuated to-99kpa ~-100kpa, and keep 2min at vacuum tightness-99kpa ~-100kpa;
(3), be filled with in described airtight cavity purity be not less than the nitrogen of 99.99% or relative humidity is not more than 1%, dew point not dry gas higher than-28 DEG C be normal pressure to described airtight cavity;
(4), step (2) and (3) repeat 4 times successively;
(5), stop described hot-plate battery core is heated, treat battery core naturally cooling, and take out battery core, complete the drying treatment of battery core.
Battery core in described airtight cavity is carried out heated baking 10-20min by actually operating, carry out being evacuated to-99kpa ~-100kpa and keep 2min, described airtight cavity is filled with nitrogen to normal pressure and needs about 1min, repeat (2) and (3) step 4 time, the demand time is about 88min, battery core naturally cooling needs about 40min, as can be seen here, the drying to described battery core can be completed at nearly 2 hours, substantially reduce drying cycle, take full advantage of the heat energy of hot-plate simultaneously, effectively reduce energy consumption. In addition, the heat-up time of described hot-plate and Heating temperature can also adjust setting, under the requirement meeting battery core water-content, shorten the heat-up time to described battery core as far as possible, to improve the rate of drying to battery core, improve production efficiency further, reduce production cost.
Wherein, Fig. 1 is the airtight cavity structural representation that hot-plate 1 is vertically arranged, and Fig. 2 is the structural representation of the horizontally disposed airtight cavity of hot-plate 1.
The announcement of book and instruction according to the above description, above-mentioned enforcement mode can also be changed and revise by those skilled in the art in the invention. Therefore, it is intended that the invention not be limited to above-mentioned embodiment, any apparent improvement done on the basis of the present invention of every those skilled in the art, replacement or modification all belong to protection scope of the present invention. In addition, although employing some specific terms in this specification sheets, but these terms are just for convenience of description, and the present invention does not form any restriction.
Claims (10)
1. a battery core quickly drying method, it is characterised in that, comprise the following steps:
(1), by battery core putting into the airtight cavity with hot-plate, described battery core is close to by described hot-plate;
(2), by described hot-plate described battery core is heated to 85 �� 5 DEG C, keeps 10 ~ 20min, then airtight cavity is evacuated to-99kpa ~-100kpa, and keeps 1 ~ 2min at vacuum tightness-99kpa ~-100kpa;
(3), being filled with in nitrogen to described airtight cavity in described airtight cavity is normal pressure;
(4), step (2) and (3) carry out 1 ~ 6 time successively;
(5), stop described hot-plate battery core is heated, treat battery core naturally cooling, and take out battery core, complete the drying treatment of battery core.
2. a kind of battery core quickly drying method according to claim 1, it is characterized in that: described hot-plate is provided with and is no less than two layers, described hot-plate is separately positioned on the relative two sides of battery core, and described battery core is exerted pressure, it is ensured that hot-plate and battery core surface contact.
3. a kind of battery core quickly drying method according to claim 1, it is characterised in that: the purity of described nitrogen is not less than 99.99%.
4. a kind of battery core quickly drying method according to claim 1, it is characterised in that: it is filled with dry gas to described airtight cavity and replaces the nitrogen described in step (3).
5. a kind of battery core quickly drying method according to claim 4, it is characterised in that: the relative humidity of described dry gas is not more than 1%.
6. a kind of battery core quickly drying method according to claim 4, it is characterised in that: the dew point of described dry gas is not higher than-28 DEG C.
7. a kind of battery core quickly drying method according to claim 1, it is characterised in that: described hot-plate is vertically arranged.
8. a kind of battery core quickly drying method according to claim 1, it is characterised in that: described hot-plate is horizontally disposed with.
9. a kind of battery core quickly drying method according to claim 1, it is characterised in that, step (4) is defined as: step (2) and (3) are repeated 4 times successively.
10. a kind of battery core quickly drying method according to claim 1, it is characterised in that: described battery core is heated to 85 �� 5 DEG C by described hot-plate in (2) by step, keeps 15min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610164194.8A CN105655628B (en) | 2016-03-22 | 2016-03-22 | A kind of battery core quickly drying method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610164194.8A CN105655628B (en) | 2016-03-22 | 2016-03-22 | A kind of battery core quickly drying method |
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| Publication Number | Publication Date |
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| CN105655628A true CN105655628A (en) | 2016-06-08 |
| CN105655628B CN105655628B (en) | 2018-05-11 |
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| CN201610164194.8A Active CN105655628B (en) | 2016-03-22 | 2016-03-22 | A kind of battery core quickly drying method |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299480A (en) * | 2016-08-30 | 2017-01-04 | 浙江超威创元实业有限公司 | A kind of polymer battery core baking process |
| CN106816638A (en) * | 2017-03-02 | 2017-06-09 | 北京新能源汽车股份有限公司 | A kind of baking method and soft bag lithium ionic cell of Soft Roll lithium-ion electric core |
| CN107819158A (en) * | 2017-11-22 | 2018-03-20 | 东莞市超鸿自动化设备有限公司 | Battery core baking fixture and the method for battery core baking |
| CN108303493A (en) * | 2017-12-29 | 2018-07-20 | 东莞市德瑞精密设备有限公司 | The prediction technique of battery water content |
| CN108376802A (en) * | 2018-02-05 | 2018-08-07 | 东莞市德瑞精密设备有限公司 | A kind of battery drying means |
| CN109269240A (en) * | 2018-09-11 | 2019-01-25 | 深圳力士智造科技有限公司 | A kind of lithium battery is rapidly heated temperature control method |
| CN109373707A (en) * | 2018-09-28 | 2019-02-22 | 风帆有限责任公司 | It is a kind of for reducing the baking method of electric core of flexible packing lithium battery water content |
| CN109654819A (en) * | 2018-12-04 | 2019-04-19 | 广州市融成锂能锂电池有限公司 | A kind of baking process of Soft Roll lithium-ion electric core |
| CN109827384A (en) * | 2019-03-09 | 2019-05-31 | 深圳市信宇人科技股份有限公司 | Vacuum oven |
| CN110461051A (en) * | 2019-08-27 | 2019-11-15 | 上海超导科技股份有限公司 | Permanent magnet induction heating device and method |
| CN110749161A (en) * | 2018-07-23 | 2020-02-04 | 深圳市瑞昇新能源科技有限公司 | Lithium battery core drying process |
| CN112595035A (en) * | 2020-12-07 | 2021-04-02 | 山东天瀚新能源科技有限公司 | Efficient baking method for lithium ion battery roll core |
| CN115133089A (en) * | 2022-09-01 | 2022-09-30 | 浙江晨阳新材料有限公司 | Shaping device and method for proton exchange membrane fuel monocell |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299480A (en) * | 2016-08-30 | 2017-01-04 | 浙江超威创元实业有限公司 | A kind of polymer battery core baking process |
| CN106816638A (en) * | 2017-03-02 | 2017-06-09 | 北京新能源汽车股份有限公司 | A kind of baking method and soft bag lithium ionic cell of Soft Roll lithium-ion electric core |
| CN106816638B (en) * | 2017-03-02 | 2019-08-27 | 北京新能源汽车股份有限公司 | A kind of baking method and soft bag lithium ionic cell of Soft Roll lithium-ion electric core |
| CN107819158A (en) * | 2017-11-22 | 2018-03-20 | 东莞市超鸿自动化设备有限公司 | Battery core baking fixture and the method for battery core baking |
| CN107819158B (en) * | 2017-11-22 | 2024-04-02 | 东莞市超鸿自动化设备有限公司 | Battery cell baking clamp and battery cell baking method |
| CN108303493A (en) * | 2017-12-29 | 2018-07-20 | 东莞市德瑞精密设备有限公司 | The prediction technique of battery water content |
| CN108376802A (en) * | 2018-02-05 | 2018-08-07 | 东莞市德瑞精密设备有限公司 | A kind of battery drying means |
| CN110749161A (en) * | 2018-07-23 | 2020-02-04 | 深圳市瑞昇新能源科技有限公司 | Lithium battery core drying process |
| CN109269240A (en) * | 2018-09-11 | 2019-01-25 | 深圳力士智造科技有限公司 | A kind of lithium battery is rapidly heated temperature control method |
| CN109373707A (en) * | 2018-09-28 | 2019-02-22 | 风帆有限责任公司 | It is a kind of for reducing the baking method of electric core of flexible packing lithium battery water content |
| CN109654819A (en) * | 2018-12-04 | 2019-04-19 | 广州市融成锂能锂电池有限公司 | A kind of baking process of Soft Roll lithium-ion electric core |
| CN109827384A (en) * | 2019-03-09 | 2019-05-31 | 深圳市信宇人科技股份有限公司 | Vacuum oven |
| CN110461051B (en) * | 2019-08-27 | 2021-07-30 | 上海超导科技股份有限公司 | Permanent magnet induction heating device and method |
| CN110461051A (en) * | 2019-08-27 | 2019-11-15 | 上海超导科技股份有限公司 | Permanent magnet induction heating device and method |
| CN112595035A (en) * | 2020-12-07 | 2021-04-02 | 山东天瀚新能源科技有限公司 | Efficient baking method for lithium ion battery roll core |
| CN115133089A (en) * | 2022-09-01 | 2022-09-30 | 浙江晨阳新材料有限公司 | Shaping device and method for proton exchange membrane fuel monocell |
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| CN105655628B (en) | 2018-05-11 |
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Inventor after: Liu Keyong Inventor after: Tu Jian Inventor after: Liu Gaoming Inventor after: Cao Li Inventor before: Liu Keyong Inventor before: Tu Jian Inventor before: Liu Gaoming Inventor before: Cao Li |
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Denomination of invention: A rapid drying method for electric core Effective date of registration: 20210729 Granted publication date: 20180511 Pledgee: Bank of Changsha Co.,Ltd. Zhuzhou branch Pledgor: HUNAN LIFANG NEW ENERGY SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2021980007086 |
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Denomination of invention: A Fast Drying Method for Electric Cells Effective date of registration: 20230829 Granted publication date: 20180511 Pledgee: Agricultural Bank of China Limited Zhuzhou branch Pledgor: HUNAN LIFANG NEW ENERGY SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2023980054119 |
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