CN203466260U - Flexibly packed polymer lithium ion battery - Google Patents
Flexibly packed polymer lithium ion battery Download PDFInfo
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- CN203466260U CN203466260U CN201320431240.8U CN201320431240U CN203466260U CN 203466260 U CN203466260 U CN 203466260U CN 201320431240 U CN201320431240 U CN 201320431240U CN 203466260 U CN203466260 U CN 203466260U
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- Prior art keywords
- battery
- main body
- lithium ion
- seal
- airbag
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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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Abstract
The utility model provides a flexibly packed polymer lithium ion battery. The flexible package polymer lithium ion battery is characterized by comprising a battery core with positive and negative electrodes, and aluminum plastic films for packaging the battery core, wherein a battery box main body for covering the battery core is arranged on one sides of the aluminum plastic films and an air bag is arranged on the other sides of the aluminum plastic films; the right side of the air bag is communicated with the left side of the battery box main body and the left side of the air bag is opened; a right sealing edge is arranged on the right side of the battery box main body; top sealing edges are arranged at the top of the battery box main body and the top of the air bag; a seal is arranged at the bottom of the air bag; the seal is arranged on the connection part between the bottom of the battery box main body and the bottom of the air bag; the two aluminum plastic films are mutually fitted on the seal to form a whole body. According to the flexibly packed polymer lithium ion battery, the seal is arranged so that the ratio of defective products that aluminum plastic films of the side edge of the packaged battery box main body are cracked and damaged and a nylon layer is released is reduced effectively; the safety performance of produced battery products and the finished-product yield are improved.
Description
Technical field
The utility model relates to polymer Li-ion battery.
Background technology
Soft-packaged polymer lithium ion battery is the high-tech environmental protection and energy saving battery growing up at the end of the nineties, be a kind of novel lithium ion battery, not only there is many advantages such as voltage high power capacity is large, the life-span is long, volume is little, self discharge is few, fail safe is relatively good and enjoy countries in the world to pay attention to.Become new generation of green environment-friendly battery, and become rapidly the new lover in power supply market.Development along with polymer Li-ion battery, its purposes is also more and more extensive, due to the stable performance of polyalcohol flexible packing lithium battery, at market share, very large advantage but also there is the outstanding advantages such as environmental protection, on notebook, digital camera, bluetooth earphone, portable communication apparatus and portable electric appts, be widely applied.
In the manufacture of soft-packaged polymer lithium ion battery traditional handicraft is produced, because polymer Li-ion battery can produce and decompose the composition of a part of electrolyte in formation process, or voltage (current potential) is higher, and the potential window of electrolyte is less, so also can make a part of electrolyte decomposition, produce a part of gas.The composition of gas is generally solvolysis generation, has carbon dioxide, oxygen, and hydrogen, methane, carbon monoxide, etc.Because battery formation process aerogenesis is many, in production technology, need the empty plastic-aluminum packaging film being connected with battery body with to load these gas, in this empty plastic-aluminum packaging film industry, be referred to as lithium ion battery airbag, and carry out pressurizing window at airbag remote edge.
The encapsulating material of flexible package polymer battery is a kind of aluminum-plastic composite membrane, this film inner layer is polypropylene glue-line, the external packing sealing of battery is exactly by two-layer composite membrane glue, to face glue surface plaster to close, and use good two metal end enclosures of flatness by two membranes jam-packed, by heating and melting composite membrane glue, thereby guarantee to be closely pasted together after glue fusing, realize seal state.
But, after carrying out because of manual operations after cell package sealing fluid injection, the operation in a plurality of posies of operation is produced, employee's operator there will be hand to take cell aluminum-plastic membrane airbag position to bend and transfer operation, or cell aluminum-plastic membrane airbag position is collided and contacted mutually with some hard phases in battery transport process, cause the battery box main body aluminum plastic film after fluid injection near the position on airbag limit, to there will be the defective products appearance of rotten limit, part cell aluminum-plastic membrane box angle, breakage and nylon layer delamination.Because flexible packing lithium ion battery is the process of a continuous charging and discharging, inside battery constantly carries out dynamic electric chemical reaction, if battery has rotten limit, plastic-aluminum bellows angle, the bad phenomenon of breakage and nylon layer delamination, hermetically sealed inside battery core just produces rapidly a large amount of gas after touching airborne hydrone and oxygen, not only can cause seriously expand tympanites distortion of battery, even there will be problems such as leaking electrolyte, badly influence the usage safety performance of polymer Li-ion battery and electrical performance (as capacity, cycle life and discharge platform etc.).Therefore; now develop a kind of new technology, can effectively to the product after polymer Li-ion battery encapsulation, protect, guarantee the exterior quality quality of battery; strengthen the sealing reliability of cell aluminum-plastic membrane, thereby greatly improve security performance and the electrical performance of polymer Li-ion battery.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of soft-packaged polymer lithium ion battery, the aluminum plastic film that effectively reduces the rear battery case main body side of encapsulation occurs improving security performance and the product qualified rate of making battery product by the defective products ratio of rotten limit, breakage and nylon layer delamination.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of soft-packaged polymer lithium ion battery, comprise the battery that contains positive and negative electrode and for packing the aluminum plastic film of described battery, one side of described aluminum plastic film is provided with for wrapping up the battery case main body of described battery, opposite side is airbag, described airbag right side is communicated with battery case main body left side, the another left side of airbag is opening, the another right side of described battery case main body is provided with right edge sealing, and the top of battery case main body and the top of airbag are provided with closedtop limit; Described airbag bottom is provided with seal, and described seal is arranged on the junction of the bottom of described battery case main body and the bottom of airbag, two, described seal place bonded to each other being integral of aluminum plastic film.After soft-packaged polymer lithium ion battery encapsulation mounted box, before battery core baking, in advance battery case body rim is sealed up to seal one near the aluminum plastic film position on airbag limit, in the multiple working procedure transhipment production process such as can prevent the fluid injection of battery below and change into, because of employee's hand, take the operations lack of standardization such as airbag spring folding to cause battery case body rim near aluminum plastic film position, airbag limit, to occur the bad phenomenon such as rotten limit, box angle, breakage and nylon layer delamination, improve security performance and the battery performance of making battery product, greatly improve the excellent rate of production of polymer Li-ion battery.Seal on described airbag is to rely on the interaction between upper and lower two end sockets to form.
As improvement, described seal is at least provided with a right angle, and wherein right-angle side is parallel with closedtop limit and overlap, and another right-angle side is vertical with described closedtop limit.
As improvement, described seal be shaped as rectangle, right-angled triangle, square or right-angled trapezium.
As improvement, right-angle side and the distance between battery case main body that described seal is vertical with closedtop limit are 0 ~ 1.5mm.
As improvement, the length of the right-angle side that described seal is parallel with closedtop limit is 5 ~ 20mm, and the length of the right-angle side vertical with closedtop limit is 5 ~ 30mm.
The beneficial effect that the utility model compared with prior art brought is:
The setting of seal can prevent the fluid injection of battery below and change into etc. in multiple working procedure transhipment production process, because of employee's hand, take the operations lack of standardization such as airbag spring folding to cause battery case body rim near aluminum plastic film position, airbag limit, to occur the bad phenomenon such as rotten limit, box angle, breakage and nylon layer delamination, improve security performance and the battery performance of making battery product, greatly improve the excellent rate of production of polymer Li-ion battery.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is another structural representation of the utility model.
Fig. 3 is another structural representation of the utility model.
Fig. 4 is another structural representation of the utility model.
Embodiment
Below in conjunction with Figure of description, the utility model is described in further detail.
As shown in Figures 1 to 4, a kind of soft-packaged polymer lithium ion battery, comprises the battery that contains positive and negative electrode and for packing the aluminum plastic film of described battery.One side of described aluminum plastic film is provided with for wrapping up the battery case main body 1 of described battery, and described battery case main body 1 is relatively turned down and forms by one or two groove; Aluminum plastic film opposite side is airbag 2, the gas producing for storage batteries box main body 1 electrolyte inside decomposes.Described airbag 2 right sides are communicated with battery case main body 1 left side, and airbag 2 left sides are opening; Described battery case main body 1 right side is provided with right edge sealing; The top of the top of battery case main body 1 and airbag 2 is provided with closedtop limit 3, and closedtop limit 3 is disposable one-body molded; The bottom of the bottom of battery case main body 1 and airbag 2 is provided with underseal limit, and underseal limit is folded to form by aluminum plastic film.Described airbag 2 bottoms are provided with seal 4, described seal 4 is arranged on the junction of the bottom of described battery case main body 1 and the bottom of airbag 2, two, 4 place of described seal bonded to each other being integral of aluminum plastic film, seal 4 on described airbag 2 is to rely on the interaction between upper and lower two end sockets to form, and upper bottom head temperature is controlled at 90～150 ℃ of scopes; Described seal 4 is at least provided with a right angle, and wherein right-angle side is parallel with closedtop limit 3 and overlap, and another right-angle side is vertical with described closedtop limit 3, in the present embodiment, described seal 4 be shaped as rectangle, right-angled triangle, square or right-angled trapezium; The length of the right-angle side that described seal 4 is parallel with closedtop limit 3 is 5 ~ 20mm, and the length of the right-angle side vertical with closedtop limit 3 is 5 ~ 30mm; Right-angle side and the distance between battery case main body 1 that described seal 4 is vertical with closedtop limit 3 are 0 ~ 1.5mm.
| Project | There is no seal | Be provided with seal |
| Production number of batteries | 10000 | 10000 |
| There is the defective products quantity/Pcs of rotten limit, box angle, breakage and nylon layer delamination in battery case body rim | 35 | 0 |
| There is the defective products ratio of rotten limit, box angle, breakage and nylon layer delamination in battery case body rim | 0.35% | 0% |
As can be seen from the above table, after soft-packaged polymer lithium ion battery encapsulation mounted box, before battery core baking, in advance battery case main body 1 edge is sealed up to seal 4 one near the aluminum plastic film position on airbag 2 limits, in the multiple working procedure transhipment production process such as can prevent the fluid injection of battery below and change into, because of employee's hand, take the operations lack of standardization such as airbag 2 spring foldings to cause battery case main body 1 edge to occur rotten limit, box angle near airbag 2 aluminum plastic film positions, limit, the bad phenomenon such as breakage and nylon layer delamination, improve security performance and the battery performance of making battery product, greatly improve the excellent rate of production of polymer Li-ion battery.
Claims (5)
1. a soft-packaged polymer lithium ion battery, comprise the battery that contains positive and negative electrode and for packing the aluminum plastic film of described battery, one side of described aluminum plastic film is provided with for wrapping up the battery case main body of described battery, opposite side is airbag, described airbag right side is communicated with battery case main body left side, the another left side of airbag is opening, and the another right side of described battery case main body is provided with right edge sealing, and the top of battery case main body and the top of airbag are provided with closedtop limit; It is characterized in that: described airbag bottom is provided with seal, and described seal is arranged on the junction of the bottom of described battery case main body and the bottom of airbag, two, described seal place bonded to each other being integral of aluminum plastic film.
2. a kind of soft-packaged polymer lithium ion battery according to claim 1, is characterized in that: described seal is at least provided with a right angle, and wherein right-angle side is parallel with closedtop limit and overlap, and another right-angle side is vertical with described closedtop limit.
3. a kind of soft-packaged polymer lithium ion battery according to claim 2, is characterized in that: described seal be shaped as rectangle, right-angled triangle, square or right-angled trapezium.
4. a kind of soft-packaged polymer lithium ion battery according to claim 2, is characterized in that: right-angle side and the distance between battery case main body that described seal is vertical with closedtop limit are 0 ~ 1.5mm.
5. a kind of soft-packaged polymer lithium ion battery according to claim 2, is characterized in that: the length of the right-angle side that described seal is parallel with closedtop limit is 5 ~ 20mm, and the length of the right-angle side vertical with closedtop limit is 5 ~ 30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320431240.8U CN203466260U (en) | 2013-07-19 | 2013-07-19 | Flexibly packed polymer lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320431240.8U CN203466260U (en) | 2013-07-19 | 2013-07-19 | Flexibly packed polymer lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203466260U true CN203466260U (en) | 2014-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320431240.8U Expired - Fee Related CN203466260U (en) | 2013-07-19 | 2013-07-19 | Flexibly packed polymer lithium ion battery |
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| Country | Link |
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| CN (1) | CN203466260U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258326A (en) * | 2017-12-22 | 2018-07-06 | 深圳瑞隆新能源科技有限公司 | A kind of Soft Roll coiling battery for improving chemical conversion aerogenesis and preparation method thereof |
| CN109860723A (en) * | 2019-03-19 | 2019-06-07 | 珠海光宇电池有限公司 | It is a kind of to improve the method for lithium battery surface smoothness, lithium battery and preparation method thereof |
-
2013
- 2013-07-19 CN CN201320431240.8U patent/CN203466260U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258326A (en) * | 2017-12-22 | 2018-07-06 | 深圳瑞隆新能源科技有限公司 | A kind of Soft Roll coiling battery for improving chemical conversion aerogenesis and preparation method thereof |
| CN109860723A (en) * | 2019-03-19 | 2019-06-07 | 珠海光宇电池有限公司 | It is a kind of to improve the method for lithium battery surface smoothness, lithium battery and preparation method thereof |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20160719 |
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| CF01 | Termination of patent right due to non-payment of annual fee |