CN101969138A - Novel device for encapsulating side edge of polymer lithium ion battery - Google Patents
Novel device for encapsulating side edge of polymer lithium ion battery Download PDFInfo
- Publication number
- CN101969138A CN101969138A CN2010102376340A CN201010237634A CN101969138A CN 101969138 A CN101969138 A CN 101969138A CN 2010102376340 A CN2010102376340 A CN 2010102376340A CN 201010237634 A CN201010237634 A CN 201010237634A CN 101969138 A CN101969138 A CN 101969138A
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- ion battery
- encapsulating
- lithium ion
- positive stop
- lug boss
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- 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
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- 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 discloses a novel device for encapsulating the side edge of a polymer lithium ion battery. The device comprises an upper seal head (1) and a lower seal head (2) which are arranged on the upper side and the lower side respectively; the upper seal head (1) and the lower seal head (2) are connected with a heating source; the upper seal head (1) and the lower seal head (2) are fixedly connected with a cylinder respectively; the top surface of the lower seal head (2) is provided with an encapsulating tank (8) with fixed thickness; an encapsulating material (7) is arranged in the encapsulating tank (8); and the encapsulating material (7) is covered on the outer surface of the main body of the polymer lithium ion battery to be encapsulated. The novel device for encapsulating the side edge of the polymer lithium ion battery does not use silicon adhesive tapes or adhesive tapes, ensures the quality of the encapsulation of the polymer lithium ion battery, improves the production efficiency of the polymer lithium ion battery, reduces production cost, makes the polymer lithium ion battery have good safety performance, and is favorable for improving the application prospect of the polymer lithium ion battery in the market.
Description
Technical field
The present invention relates to battery manufacturing technology field, particularly relate to a kind of side packaging system of novel polymer lithium ion battery.
Background technology
Advantages such as polymer Li-ion battery has voltage height, specific energy height, recycles often, memory time is long, on portable electric appts, be used widely, so people are more and more higher to the safety requirements of polymer Li-ion battery as mobile phone, Digital Video and laptop computer.
For polymer Li-ion battery, its shell adopts novel plastic-aluminum encapsulating film material to make, and replaces shell traditional, steel, compares with traditional box hat lithium ion battery, and the great advantage of polymer Li-ion battery is that security performance is good.
In order to guarantee the sealing of polymer Li-ion battery, a most important ring is the encapsulation of carrying out plastic-aluminum encapsulating film material in the production technology of battery, this packaging technology is to apply certain heat on the plastic-aluminum encapsulating film, and the plastic-aluminum encapsulating film covers on the outer surface of polymer Li-ion battery main body, make that the functional layer fusing on the relative two membranes is bonding, thereby realize the isolated of polymer Li-ion battery internal and external environment.The quality of cell package is directly determining the degree of isolation of inside and outside environment of battery and the characteristics such as wear life of battery under general environment.If the package quality of polymer Li-ion battery is bad, cause bad phenomenon such as battery generation air-blowing, leakage, electrical property reduction easily, serious even normal use that can have influence on battery.At present, package quality can be estimated from aspects such as the thickness of packaging belt, tensile strength, microdeformations, and the factor that mainly influences package quality has package temperature, encapsulation time, encapsulation pressure etc.
At present, the encapsulating structure that polymer Li-ion battery adopts be with about in the of one group, the metal end enclosures of relative two band heating sources, these two end sockets drive relative pressing by cylinder, thereby realize that heat is supplied with and the application of force is pressurizeed.In order to guarantee not occur excessive encapsulation, be added with a silica gel strip that plays cushioning effect on the metal end enclosure below being positioned at and also fix with the Teflon adhesive plaster, be positioned at and post one deck Teflon adhesive plaster on the top end socket.
But, encapsulating structure for above-mentioned existing polymer Li-ion battery, in order to encapsulate, it is bonding that the plastic-aluminum encapsulating film need carry out high temperature melting, and the silica gel strip and the Teflon adhesive plaster that are positioned on the following metal end enclosure are at high temperature aging easily, thereby make the battery production workman need frequent replacing silica gel strip and adhesive plaster, greatly reduce the production efficiency of battery, silica gel strip and adhesive plaster have improved the production cost of battery greatly as consumptive material simultaneously.
In addition, the encapsulating structure of above-mentioned polymer Li-ion battery too relies on silica gel strip and adhesive plaster, and silica gel strip damages easily, and wear problem takes place adhesive plaster easily, thereby makes packaged battery have problems such as package quality is low, package thickness is big.
Summary of the invention
In view of this, the side packaging system that the purpose of this invention is to provide a kind of novel polymer lithium ion battery, it has cancelled the use of silica gel strip and adhesive plaster, can guarantee the quality of polymer Li-ion battery encapsulation, improve the production efficiency of polymer Li-ion battery, reduce the production cost of polymer Li-ion battery, make polymer Li-ion battery have the excellent safety energy, help improving the market application foreground of polymer Li-ion battery, be of great practical significance.
For this reason, the invention provides a kind of side packaging system of novel polymer lithium ion battery, include the upper cover 1 and the bottom head 2 of upper and lower settings, described upper cover 1 is connected with heating source with bottom head 2, and described upper cover 1 and bottom head 2 are fixedly connected with a cylinder respectively;
Described bottom head 2 end faces have the encapsulation groove 8 of fixed thickness, are placed with encapsulating material 7 in the described encapsulation groove 8, and described encapsulating material 7 covers polymer Li-ion battery main body outer surface to be packaged.
Wherein, two ends, the described bottom head 2 end face left and right sides have front end positive stop lug boss 3 and rear end positive stop lug boss 4 respectively, are formed with described encapsulation groove 8 between described front end positive stop lug boss 3 and the rear end positive stop lug boss 4.
Wherein, be positioned at and have one on bottom head 2 end faces on described front end positive stop lug boss 3 right sides and keep away glue groove 5.
Wherein, described front end positive stop lug boss 3 equates with the thickness of rear end positive stop lug boss 4.
Wherein, described upper cover 1 and the end socket of bottom head 2 for adopting easy heat conductive metal material to make.
Wherein, described encapsulating material 7 is the plastic-aluminum encapsulating film.
By above technical scheme provided by the invention as seen, compared with prior art, the invention provides a kind of side packaging system of novel polymer lithium ion battery, it has cancelled the use of silica gel strip and adhesive plaster, can guarantee the quality of polymer Li-ion battery encapsulation, improve the production efficiency of polymer Li-ion battery, reduce the production cost of polymer Li-ion battery, make polymer Li-ion battery have the excellent safety energy, help improving the market application foreground of polymer Li-ion battery, be of great practical significance.
Description of drawings
Fig. 1 is the structural representation of the side packaging system of a kind of novel polymer lithium ion battery provided by the invention;
Among the figure: 1 is upper cover, and 2 is bottom head, and 3 is the front end positive stop lug boss, and 4 is the rear end positive stop lug boss, and 5 for keeping away the glue groove, and 6 is encapsulating face, and 7 is encapsulating material, and 8 are the encapsulation groove.
Embodiment
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.
Fig. 1 is the structural representation of the side packaging system of a kind of novel polymer lithium ion battery provided by the invention.
Referring to Fig. 1, the invention provides a kind of side packaging system of novel polymer lithium ion battery, this device includes the upper cover 1 and the bottom head 2 of upper and lower settings, described upper cover 1 be positioned at bottom head 2 under;
In the present invention, described upper cover 1 and the end socket of bottom head 2 for adopting easy heat conductive metal material to make for example are copper end socket or aluminium end socket; Described upper cover 1 is connected with a heating source respectively with bottom head 2, gives upper cover 1 and bottom head 2 heat supplieds by heating source;
In the present invention, the bottom surface of described upper cover 1 is the encapsulating face towards battery, and this encapsulating face is the machine work plane, does not paste any adhesive plaster, and the end face of described bottom head 2 is the encapsulating face towards battery, does not paste any adhesive plaster equally.
Need to prove, described heating source can be any device that can generate heat, for example can be the device (heating resistor or thermistor) that after energising, can generate heat, thereby after described heating source generates heat, can be with the upper cover 1 and the bottom head 2 of heat transferred metal material.Described heating source is preferably heating tube.
In the present invention, described upper cover 1 and bottom head 2 also are fixedly connected with a cylinder respectively, and described cylinder is a lift cylinder, and this lift cylinder drive upper cover 1 and bottom head 2 carry out oscilaltion and move.
Referring to Fig. 1, described bottom head 2 end face left ends have a front end positive stop lug boss 3, described bottom head 2 end face right-hand members have a rear end positive stop lug boss 4, form the fixing encapsulation groove 8 of a thickness (height of vertical direction) between described front end positive stop lug boss 3 and the rear end positive stop lug boss 4, described front end positive stop lug boss 3 and rear end positive stop lug boss 4 constitute the left and right sides wall of described encapsulation groove, are placed with encapsulating material 7 in the described encapsulation groove 8;
In the present invention, on the specific implementation, described encapsulating material 7 is the plastic-aluminum encapsulating film.
In the present invention, on the specific implementation, described front end positive stop lug boss 3 equates with the thickness (being the height of vertical direction) of rear end positive stop lug boss 4.
In the present invention, be positioned at and have one on bottom head 2 end faces on described front end positive stop lug boss 3 right sides and keep away glue groove 5, be used to avoid the section of encapsulating material 7, prevent that encapsulating material 7 from polluteing bottom head 2 and upper cover 1 owing to melting glue.
For the present invention, its operation principle is: upper cover 1 and bottom head 2 are driven down by a lift cylinder respectively, realization presses together, until the bottom surface of upper cover 1 touches two boss (being front end positive stop lug boss 3 and rear end positive stop lug boss 4) at bottom head 2 end face two ends, therefore between two boss, form the fixing encapsulation groove 8(of a thickness (height of vertical direction) and be the gap), be placed in this encapsulation groove 8 as the plastic-aluminum encapsulating film of encapsulating material 7.Because upper cover 1 is connected with a heating source respectively with bottom head 2, heating source transmits heat to upper cover 1 and bottom head 2, described upper cover 1 and bottom head 2 resupply heat to the plastic-aluminum encapsulating film, melt bonding to the plastic-aluminum encapsulating film, the fusing that has guaranteed functional layer on the plastic-aluminum encapsulating film is bonding, and form the packaging belt of a fixed thickness because of the fixed thickness of encapsulation groove 8, and guaranteed the consistency of cell package thickness, prevent the problem of excessive encapsulation and weak encapsulation.
In the present invention, need to prove that on the specific implementation, the thickness of described encapsulation groove 8 is all identical with the thickness of front end positive stop lug boss 3, rear end positive stop lug boss 4.
Provide the specific embodiment of the side packaging system of a kind of novel polymer lithium ion battery provided by the invention below:
Polymer battery with capacity 790mA.h is an example, and the side edge length size of battery is 60mm, and individual layer plastic-aluminum encapsulating film material thickness is 113 μ m.Before encapsulating, at first doubling plastic-aluminum encapsulating film material makes that the binding function layer of encapsulating film one side is relative, and therefore the common thickness of two-layer plastic-aluminum encapsulating film is 226 μ m altogether before encapsulation.For the present invention, after encapsulation, require package thickness (200 ± 15) the μ m of plastic-aluminum encapsulating film.
For the present invention, polymer Li-ion battery is when carrying out the side encapsulation, upper cover 1 and bottom head 2 are driven by two cylinders respectively and press together in opposite directions, touch the boss at bottom head 2 end face two ends up to the bottom surface of upper cover 1, the boss design thickness is 200 μ m, between two boss, form the encapsulation groove 8 of the degree of depth 200 μ m, encapsulating material (being plastic-aluminum encapsulating film material) is crushed in the encapsulation groove, by upper cover 1 and 2 while of bottom head heat supplied, be directly delivered on the encapsulating material, make that the fusing of two-layer plastic-aluminum encapsulating film material adhesive functional layer is bonding, and because the fixed thickness of encapsulation groove forms the packaging belt that thickness is 200 μ m.Through the applicant's lot of experiment validation, this encapsulating structure is stable, and the encapsulation consistency of encapsulation back polymer Li-ion battery side is better, is suitable for promoting the use of on a large scale.
For the present invention, it has guaranteed the quality that encapsulates by mechanical structure, directly encapsulating material is heated by two metal end enclosures, and the heat transfer efficiency height more helps the realization of encapsulating material binding function and shortens the time that encapsulates; By the control of boss height, guarantee the consistency of cell package thickness simultaneously, prevent the weak encapsulation of excessive enclosure phenomenon.
In addition, the present invention has cancelled the use of bumper rubber, adhesive plaster in the existing battery packaging structure, adhesive tape, the influence of adhesive plaster have been stopped to encapsulating, saved material cost, reduced the integral production cost of battery, because need not the battery production workman changes silica gel strip and adhesive plaster, therefore also improved the production efficiency of battery greatly.
In sum, compared with prior art, the side packaging system of a kind of novel polymer lithium ion battery provided by the invention, it has cancelled the use of silica gel strip and adhesive plaster, can guarantee the quality of polymer Li-ion battery encapsulation, improve the production efficiency of polymer Li-ion battery, reduce the production cost of polymer Li-ion battery, make polymer Li-ion battery have the excellent safety energy, help improving the market application foreground of polymer Li-ion battery, be of great practical significance.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. the side packaging system of a novel polymer lithium ion battery, it is characterized in that, include the upper cover (1) and the bottom head (2) of upper and lower settings, described upper cover (1) is connected with heating source with bottom head (2), and described upper cover (1) and bottom head (2) are fixedly connected with a cylinder respectively;
Described bottom head (2) end face has the encapsulation groove (8) of fixed thickness, is placed with encapsulating material (7) in the described encapsulation groove (8), and described encapsulating material (7) covers polymer Li-ion battery main body outer surface to be packaged.
2. side packaging system as claimed in claim 1, it is characterized in that, two ends, described bottom head (2) the end face left and right sides have front end positive stop lug boss (3) and rear end positive stop lug boss (4) respectively, are formed with described encapsulation groove (8) between described front end positive stop lug boss (3) and the rear end positive stop lug boss (4).
3. side packaging system as claimed in claim 2 is characterized in that, is positioned to have one on bottom head (2) end face on described front end positive stop lug boss (3) right side and keep away glue groove (5).
4. side packaging system as claimed in claim 2 is characterized in that, described front end positive stop lug boss (3) equates with the thickness of rear end positive stop lug boss (4).
5. as each described side packaging system in the claim 1 to 4, it is characterized in that described upper cover (1) and bottom head (2) end socket for adopting easy heat conductive metal material to make.
6. as each described side packaging system in the claim 1 to 4, it is characterized in that described encapsulating material (7) is the plastic-aluminum encapsulating film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102376340A CN101969138A (en) | 2010-07-27 | 2010-07-27 | Novel device for encapsulating side edge of polymer lithium ion battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102376340A CN101969138A (en) | 2010-07-27 | 2010-07-27 | Novel device for encapsulating side edge of polymer lithium ion battery |
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| Publication Number | Publication Date |
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| CN101969138A true CN101969138A (en) | 2011-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102376340A Pending CN101969138A (en) | 2010-07-27 | 2010-07-27 | Novel device for encapsulating side edge of polymer lithium ion battery |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103138009A (en) * | 2013-03-25 | 2013-06-05 | 天津力神电池股份有限公司 | Device for automatically attaching adhesive tape on side edge of cell |
| CN103337666A (en) * | 2013-06-27 | 2013-10-02 | 深圳市崧鼎科技有限公司 | Method for packaging flexibly packaged cell of lithium ion battery, cell and battery |
| CN103730608A (en) * | 2012-10-11 | 2014-04-16 | 微宏动力系统（湖州）有限公司 | Soft-bag battery, sealing machine of soft-bag battery and sealing method of soft-bag battery |
| CN105720308A (en) * | 2016-02-24 | 2016-06-29 | 中山市世豹新能源有限公司 | Expanding aluminum-plastic film package lithium battery repairing method for double-station and double-cavity packaging machine |
| CN109103493A (en) * | 2018-07-04 | 2018-12-28 | 天津力神电池股份有限公司 | A kind of polymer Li-ion battery and preparation method thereof |
| CN111509282A (en) * | 2020-03-25 | 2020-08-07 | 惠州亿纬创能电池有限公司 | Battery, battery core and top sealing process thereof |
| CN112557294A (en) * | 2020-10-29 | 2021-03-26 | 浙江锋锂新能源科技有限公司 | Method for detecting packaging effect of aluminum plastic film of soft package battery |
| CN113835165A (en) * | 2020-06-24 | 2021-12-24 | 华为技术有限公司 | Light emitting component, chip, optical module and optical communication equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201325188Y (en) * | 2008-12-15 | 2009-10-14 | 厦门宝龙工业股份有限公司 | Lithium battery heat pressing packaging device |
| CN201378616Y (en) * | 2009-02-27 | 2010-01-06 | 西安瑟福能源科技有限公司 | Novel polymer lithium ion battery packaging mould |
-
2010
- 2010-07-27 CN CN2010102376340A patent/CN101969138A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201325188Y (en) * | 2008-12-15 | 2009-10-14 | 厦门宝龙工业股份有限公司 | Lithium battery heat pressing packaging device |
| CN201378616Y (en) * | 2009-02-27 | 2010-01-06 | 西安瑟福能源科技有限公司 | Novel polymer lithium ion battery packaging mould |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730608A (en) * | 2012-10-11 | 2014-04-16 | 微宏动力系统（湖州）有限公司 | Soft-bag battery, sealing machine of soft-bag battery and sealing method of soft-bag battery |
| CN103730608B (en) * | 2012-10-11 | 2016-03-30 | 微宏动力系统（湖州）有限公司 | Soft-package battery, soft-package battery sealing machine and soft-package battery mouth-sealing method |
| CN103138009A (en) * | 2013-03-25 | 2013-06-05 | 天津力神电池股份有限公司 | Device for automatically attaching adhesive tape on side edge of cell |
| CN103337666A (en) * | 2013-06-27 | 2013-10-02 | 深圳市崧鼎科技有限公司 | Method for packaging flexibly packaged cell of lithium ion battery, cell and battery |
| CN105720308A (en) * | 2016-02-24 | 2016-06-29 | 中山市世豹新能源有限公司 | Expanding aluminum-plastic film package lithium battery repairing method for double-station and double-cavity packaging machine |
| CN109103493A (en) * | 2018-07-04 | 2018-12-28 | 天津力神电池股份有限公司 | A kind of polymer Li-ion battery and preparation method thereof |
| CN111509282A (en) * | 2020-03-25 | 2020-08-07 | 惠州亿纬创能电池有限公司 | Battery, battery core and top sealing process thereof |
| CN113835165A (en) * | 2020-06-24 | 2021-12-24 | 华为技术有限公司 | Light emitting component, chip, optical module and optical communication equipment |
| CN113835165B (en) * | 2020-06-24 | 2022-11-25 | 华为技术有限公司 | Light emitting component, chip, optical module and optical communication equipment |
| CN112557294A (en) * | 2020-10-29 | 2021-03-26 | 浙江锋锂新能源科技有限公司 | Method for detecting packaging effect of aluminum plastic film of soft package battery |
| CN112557294B (en) * | 2020-10-29 | 2024-02-13 | 浙江锋锂新能源科技有限公司 | Method for detecting packaging effect of aluminum plastic film of soft package battery |
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Application publication date: 20110209 |