CN113851695A - Method for pressurizing and exhausting battery cell by secondary sealing - Google Patents
Method for pressurizing and exhausting battery cell by secondary sealing Download PDFInfo
- Publication number
- CN113851695A CN113851695A CN202110912172.6A CN202110912172A CN113851695A CN 113851695 A CN113851695 A CN 113851695A CN 202110912172 A CN202110912172 A CN 202110912172A CN 113851695 A CN113851695 A CN 113851695A
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- China
- Prior art keywords
- sealing
- plastic film
- temperature
- aluminum
- battery cell
- 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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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000002985 plastic film Substances 0.000 claims abstract description 40
- 229920006255 plastic film Polymers 0.000 claims abstract description 40
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000741 silica gel Substances 0.000 claims abstract description 12
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 12
- 239000004677 Nylon Substances 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 17
- 239000003792 electrolyte Substances 0.000 abstract description 11
- 238000002844 melting Methods 0.000 abstract description 11
- 230000008018 melting Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 7
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 5
- 238000004806 packaging method and process Methods 0.000 abstract description 5
- 238000007731 hot pressing Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 2
- 238000005538 encapsulation Methods 0.000 description 6
- 238000002309 gasification Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000009517 secondary packaging Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000009516 primary packaging Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 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
- H01M10/05—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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
The invention belongs to the technical field of lithium ion battery processing, and relates to a method for pressurizing and exhausting a secondary battery cell. In the secondary pre-sealing time, when the PP layer of the aluminum plastic film does not reach the melting point in the early stage, the pressure of 0.5-0.8Mpa is extruded, the lower part of the single end socket is low in thermal conductivity by utilizing silica gel, so that the end socket presents different temperatures in different time, the simultaneous hot pressing and hot sealing are realized before and after the softening point temperature of the aluminum plastic film, the electrolyte at the sealing position is diffused to the periphery, the electrolytic attachment of the sealing position is ensured, the final melting temperature of the PP layer of the aluminum plastic film can be reached at the post-secondary pre-sealing temperature, and the packaging effect is ensured.
Description
Technical Field
The invention belongs to the technical field of lithium ion battery processing, and relates to a method for pressurizing and exhausting a secondary battery cell.
Background
With the vigorous development of the lithium battery industry and the wide application of various portable intelligent terminals, the requirements of customers on the safety regulation aspect of lithium ion batteries are more and more strict, and the swelling and leakage of soft package batteries are almost zero tolerance, so that the engineering capacity of the packaging technology related to the soft package batteries needs to be improved.
At present the lithium electricity trade after injecting into electrolyte, need change into and activate electric core, generate the SEI membrane, this process will produce gas certainly, and this part gas need be got rid of, just must evacuation exhaust, so need carry out secondary encapsulation, this is the indispensable one process of soft packet of lithium ion electric core.
During secondary packaging, the battery core is injected with liquid, electrolyte is attached to the packaging position, the packaging temperature of the aluminum-plastic film is generally over 170 ℃, the high temperature can cause the gasification of the electrolyte and the gasification absorbs heat, so that the temperature of the secondary packaging in the same industry is higher than that of the primary packaging at present. At present, the 80% bulging weeping problem of soft packet of lithium ion cell has still been out two and has been sealed, because can guarantee the encapsulation temperature of plastic-aluminum membrane behind the rising temperature, but still exist at the gasification of encapsulation position electrolyte, gaseous if can't get rid of that electrolyte gasification back produced, at the in-process of plastic-aluminum membrane sol, gaseous will remain the position of seal, lead to the sol pock mark, influence the encapsulation effect, this problem has become the aeipathia problem of soft packet of lithium ion trade, how get rid of the influence of electrolyte to the encapsulation effect when two encapsulation, the difficult problem that the lithium electricity trade needs to be solved.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a method for realizing simultaneous hot pressing and heat sealing by using a single end enclosure and achieving secondary cell pressurization and exhaust with good exhaust effect.
The purpose of the invention can be realized by the following technical scheme:
a method for pressurizing and exhausting a battery cell in a double-sealing mode comprises the steps of conducting vacuum exhaust on the battery cell, immediately conducting pre-sealing on an aluminum-plastic film through a single sealing head under the pressure of 0.5-0.8Mpa, and then conducting fine sealing treatment on the aluminum-plastic film.
In the above method for pressurizing and exhausting the second cell seal, the pre-sealing time is 2-4 s. The overlong pre-sealing time can cause excessive melting of the PP layer of the aluminum plastic film, and the secondary sealing efficiency is influenced.
In the above-mentioned method for pressurizing and exhausting the battery cell with two sealed ends, the upper temperature of the single sealed end is 175-. According to the invention, no substance is pasted on the upper part of the single end enclosure, and the silica gel is pasted on the lower part of the single end enclosure, so that the heat conduction rate is reduced, the simultaneous hot pressing and hot sealing are realized before and after the softening point temperature of the aluminum-plastic film, the electrolyte at the sealing position is diffused to the periphery, and the pressurizing and exhausting effects are greatly improved.
In the method for pressurizing and exhausting the secondary battery cell, the lower part of the single end enclosure is pasted with 0.3-0.5mm of silica gel. When the thickness of the silica gel is 0.3-0.5mm, the heat conduction rate is favorably controlled, and the temperature of the inner surface is below 145 ℃ in 1.3s of the pre-sealing.
In the above-mentioned method for pressurizing and exhausting the secondary seal of the battery cell, the temperature of the aluminum-plastic film is gradually increased at 60-170 ℃ in the pre-sealing process.
The cell of the invention is pre-sealed immediately after vacuum exhaust action, the pre-sealing time is preferably 3s, the applied pressure is 0.6MPa, the temperature of the aluminum plastic film is raised from 60 ℃ to 145 ℃ which is the initial melting temperature of the PP layer (the initial melting temperature of the aluminum plastic film) in the first 1.3s because of slow thermal conductivity of silica gel, the PP layer of the aluminum plastic film is not melted in the extrusion process, the electrolyte attached to the surface of the aluminum plastic film can diffuse outwards to the sealing position due to pressure, the surface temperature of the aluminum plastic film is raised from 145 ℃ to 153 ℃ which is the final melting temperature of the aluminum plastic film in the period of 1.3s-2.1s, the PP layer of the aluminum plastic film starts to melt in the process and reaches the fully melting temperature, the PP layer of the aluminum plastic film keeps rising until 170 ℃ is continuously melted in the process of 2.1s-3s, and a uniform and pockmark-free sol state is formed at the sealing position, and (5) finishing the pre-sealing, wherein the main output factor of the process is in a sol state.
In the above method for pressurizing and exhausting the secondary cell seal, the aluminum-plastic film includes a nylon layer, an AL layer, and a PP layer.
In the above-mentioned method for pressurizing and exhausting the secondary seal of the battery cell, the fine seal time is 3-5s, the fine seal temperature is 170-180 ℃, and the fine seal pressure is 0.2-0.4 MPa.
Compared with the prior art, the invention has the following beneficial effects: in the secondary pre-sealing time, when the PP layer of the aluminum plastic film does not reach the melting point in the early stage, the pressure of 0.5-0.8Mpa is extruded, the lower part of the single end socket is low in thermal conductivity by utilizing silica gel, so that the end socket presents different temperatures in different time, the simultaneous hot pressing and hot sealing are realized before and after the softening point temperature of the aluminum plastic film, the electrolyte at the sealing position is diffused to the periphery, the electrolytic attachment of the sealing position is ensured, the final melting temperature of the PP layer of the aluminum plastic film can be reached at the post-secondary pre-sealing temperature, and the packaging effect is ensured.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.
Example 1:
after 30 cells are prepared and exhausted in vacuum, the single-end-enclosure is used for pre-enclosing the aluminum-plastic film for 3s at 0.8Mpa, the temperature of the aluminum-plastic film is gradually increased at 60-170 ℃ in the pre-enclosing process, and then the fine-enclosure treatment is carried out on the aluminum-plastic film for 3s at 175 ℃ and 0.3 Mpa. Wherein the temperature of the non-application material at the upper part of the single seal head is 185 ℃, and the temperature of the 0.5mm silica gel applied at the lower part of the single seal head is 195 ℃.
Example 2:
after 30 cells are prepared and exhausted in vacuum, the single-end-enclosure is used for pre-enclosing the aluminum-plastic film for 3s at 0.5Mpa, the temperature of the aluminum-plastic film is gradually increased at 60-170 ℃ in the pre-enclosing process, and then the fine-enclosure treatment is carried out on the aluminum-plastic film for 3s at 175 ℃ and 0.3 Mpa. Wherein the temperature of the non-application material at the upper part of the single seal head is 185 ℃, and the temperature of the application of 0.3mm silica gel at the lower part of the single seal head is 190 ℃.
Example 3:
after 30 cells are prepared and exhausted in vacuum, the aluminum-plastic film is immediately subjected to pre-sealing for 4s under the pressure of 0.8Mpa, the temperature of the aluminum-plastic film is gradually increased at 60-170 ℃ in the pre-sealing process, and then the aluminum-plastic film is subjected to fine sealing treatment for 3s under the temperature of 175 ℃ and the pressure of 0.3 Mpa. Wherein the temperature of the non-application material at the upper part of the pre-sealed single end enclosure is 185 ℃, and the temperature of the application of 0.5mm silica gel at the lower part of the single end enclosure is 195 ℃.
Example 4:
after 30 cells are prepared and exhausted in vacuum, the aluminum-plastic film is immediately subjected to aluminum-plastic film pre-sealing for 3s under the pressure of 0.5Mpa, the temperature of the aluminum-plastic film is gradually increased at 40-170 ℃ in the pre-sealing process, and then the aluminum-plastic film is subjected to fine sealing treatment for 3s under the temperature of 175 ℃ and the pressure of 0.3 Mpa. Wherein the temperature of the non-application material at the upper part and the lower part of the pre-sealed single sealing head is 185 ℃.
Example 5:
the difference from the example 1 is that the lower part of the single end socket is coated with 0.5mm of Teflon.
Example 6:
the difference from example 1 is only that the seal temperature is set at 160 ℃ and the seal time is 3 s.
Comparative example 1:
the only difference from example 1 is that the pre-sealing process does not set a pressure.
Comparative example 2:
the difference from the example 1 is only that the upper part of the single end socket is also coated with 0.5mm of silica gel, and the pre-sealing pressure is 1.2 mpa.
Table 1: cell performance test results of examples 1 to 5 and comparative examples 1 to 3
According to the results, the lower end socket is pasted with 0.5mm of silica gel within the two-seal pre-sealing time, and the electrolyte at the sealing position is diffused to the periphery by extruding under the pressure of 0.8Mpa when the PP layer of the aluminum plastic film does not reach the melting point in the early stage, so that the sealing position is not attached by electrolysis, and the final melting temperature of the PP layer of the aluminum plastic film can be reached at the later stage of the two-seal pre-sealing, so that the packaging effect is ensured.
The technical scope of the invention claimed by the embodiments of the present application is not exhaustive, and new technical solutions formed by equivalent replacement of single or multiple technical features in the technical solutions of the embodiments are also within the scope of the invention claimed by the present application; in all the embodiments of the present invention, which are listed or not listed, each parameter in the same embodiment only represents an example (i.e., a feasible embodiment) of the technical solution, and there is no strict matching and limiting relationship between the parameters, wherein the parameters may be replaced with each other without departing from the axiom and the requirements of the present invention, unless otherwise specified.
The technical means disclosed by the scheme of the invention are not limited to the technical means disclosed by the technical means, and the technical scheme also comprises the technical scheme formed by any combination of the technical characteristics. While the foregoing is directed to embodiments of the present invention, it will be appreciated by those skilled in the art that various changes may be made in the embodiments without departing from the principles of the invention, and that such changes and modifications are intended to be included within the scope of the invention.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (7)
1. A method for secondary sealing and pressure exhaust of a battery cell is characterized by comprising the steps of performing vacuum exhaust on the battery cell, performing aluminum-plastic film pre-sealing by using a single sealing head immediately under the pressure of 0.5-0.8Mpa, and performing fine sealing treatment on an aluminum-plastic film.
2. The method for pressurizing and exhausting the battery cell secondary seal according to claim 1, wherein the pre-seal time is 2-4 s.
3. The method of claim 1, wherein the upper temperature of the single seal head is 175-185 ℃ and the lower temperature of the single seal head is 190-210 ℃.
4. The method of claim 3, wherein the lower portion of the single end enclosure is coated with 0.3-0.5mm of silica gel.
5. The method for pressurizing and exhausting the secondary battery cell seal according to claim 1, wherein the temperature of the aluminum-plastic film is gradually increased at 60-170 ℃ in the pre-sealing process.
6. The method for pressurizing and exhausting the secondary battery cell according to claim 1, wherein the aluminum-plastic film comprises a nylon layer, an AL layer and a PP layer.
7. The method of claim 1, wherein the sealing time is 3-5s, the sealing temperature is 170-180 ℃, and the sealing pressure is 0.2-0.4 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110912172.6A CN113851695B (en) | 2021-08-10 | 2021-08-10 | Method for pressurizing and exhausting electricity core in two sealing mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110912172.6A CN113851695B (en) | 2021-08-10 | 2021-08-10 | Method for pressurizing and exhausting electricity core in two sealing mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113851695A true CN113851695A (en) | 2021-12-28 |
| CN113851695B CN113851695B (en) | 2024-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110912172.6A Active CN113851695B (en) | 2021-08-10 | 2021-08-10 | Method for pressurizing and exhausting electricity core in two sealing mode |
Country Status (1)
| Country | Link |
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| CN (1) | CN113851695B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202503038U (en) * | 2012-02-14 | 2012-10-24 | 深圳格林德能源有限公司 | Seal head structure for packaging of flexible package polymer lithium ion battery |
| CN103000960A (en) * | 2012-12-27 | 2013-03-27 | 天津力神电池股份有限公司 | Encapsulation method and encapsulation device of soft-package lithium-ion battery |
| CN203300756U (en) * | 2013-06-07 | 2013-11-20 | 广东国光电子有限公司 | Device for manually packaging soft package polymer lithium ion battery |
| CN106025145A (en) * | 2016-08-09 | 2016-10-12 | 连云港德立信电子科技有限公司 | Flexible package lithium battery two-seal liquor-drainage exhaust packaging technology |
| CN108630836A (en) * | 2018-04-25 | 2018-10-09 | 广东国光电子有限公司 | A kind of discoid polymer Li-ion battery of Soft Roll makes edge sealing end socket and method |
| CN109560221A (en) * | 2018-12-03 | 2019-04-02 | 桑顿新能源科技有限公司 | The method for improving soft-package battery aluminum plastic film package reliability |
| CN113097569A (en) * | 2021-04-01 | 2021-07-09 | 合肥国轩高科动力能源有限公司 | Manufacturing method and maintenance method of maintainable soft package lithium ion battery |
| CN113178613A (en) * | 2021-05-13 | 2021-07-27 | 苏州清陶新能源科技有限公司 | Secondary packaging method and forming method of soft package battery and soft package battery |
-
2021
- 2021-08-10 CN CN202110912172.6A patent/CN113851695B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202503038U (en) * | 2012-02-14 | 2012-10-24 | 深圳格林德能源有限公司 | Seal head structure for packaging of flexible package polymer lithium ion battery |
| CN103000960A (en) * | 2012-12-27 | 2013-03-27 | 天津力神电池股份有限公司 | Encapsulation method and encapsulation device of soft-package lithium-ion battery |
| CN203300756U (en) * | 2013-06-07 | 2013-11-20 | 广东国光电子有限公司 | Device for manually packaging soft package polymer lithium ion battery |
| CN106025145A (en) * | 2016-08-09 | 2016-10-12 | 连云港德立信电子科技有限公司 | Flexible package lithium battery two-seal liquor-drainage exhaust packaging technology |
| CN108630836A (en) * | 2018-04-25 | 2018-10-09 | 广东国光电子有限公司 | A kind of discoid polymer Li-ion battery of Soft Roll makes edge sealing end socket and method |
| CN109560221A (en) * | 2018-12-03 | 2019-04-02 | 桑顿新能源科技有限公司 | The method for improving soft-package battery aluminum plastic film package reliability |
| CN113097569A (en) * | 2021-04-01 | 2021-07-09 | 合肥国轩高科动力能源有限公司 | Manufacturing method and maintenance method of maintainable soft package lithium ion battery |
| CN113178613A (en) * | 2021-05-13 | 2021-07-27 | 苏州清陶新能源科技有限公司 | Secondary packaging method and forming method of soft package battery and soft package battery |
Also Published As
| Publication number | Publication date |
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| CN113851695B (en) | 2024-07-23 |
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