CN202940278U - Flexible packaging lithium cell - Google Patents
Flexible packaging lithium cell Download PDFInfo
- Publication number
- CN202940278U CN202940278U CN2012205414226U CN201220541422U CN202940278U CN 202940278 U CN202940278 U CN 202940278U CN 2012205414226 U CN2012205414226 U CN 2012205414226U CN 201220541422 U CN201220541422 U CN 201220541422U CN 202940278 U CN202940278 U CN 202940278U
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- CN
- China
- Prior art keywords
- electrode lug
- negative electrode
- lug
- plastic composite
- aluminum
- 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.)
- Expired - Fee Related
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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
Abstract
The utility model discloses a flexible packaging lithium cell which comprises aluminum plastic composite films, electrode lug insulation paste, a positive electrode lug, a negative electrode lug and a rolling core, wherein the positive electrode lug and the negative electrode lug are welded with the rolling core; the aluminum plastic composite films are packaged on the outer sides of the positive electrode lug and the negative electrode lug; the electrode lug insulation paste is arranged between the positive electrode lug and the aluminum plastic composite film and between the negative electrode lug and the aluminum plastic composite film; the electrode lug insulation paste is divided into a pasting part and a turnover part in the length direction of the positive electrode lug or the negative electrode lug; each pasting part is clung to the positive electrode lug or the negative electrode lug; and each turnover part is turned over downward along the end part of the aluminum plastic composite film on the positive electrode lug or the negative electrode lug, and clung to the aluminum plastic composite film. According to the flexible packaging lithium cell, short circuit between aluminum layers in the aluminum plastic composite films and the positive electrode lug or the negative electrode lug can be avoided; the aluminum layer corrosion is prevented effectively; and an air inflation ratio of the flexible packaging lithium cell is reduced.
Description
Technical field
The utility model relates to technical field of lithium batteries, relates in particular to a kind of flexible package lithium cell.
Background technology
The encapsulation process of lithium battery of the prior art, generally comprise the insulation of spot welding baffle, baffle, bending baffle to the closedtop position, be wound around the operation such as glue, when bending baffle to closedtop groove position, battery lug in common battery structure, the negative pole component's feet that easily causes negative pole and electronegative potential directly contacts with the aluminium lamination of the external packing aluminum plastic film of flexible package and short circuit is joined, the corrosion aluminium lamination, and the water-proof function of aluminum-plastic composite membrane was lost efficacy, cause the problem of lithium battery inflatable; Add, after the flexible package lithium cell moulding, be wrapped in the height that lug insulating cement on lug occupies a part of battery, reduced the problem of the energy density of battery.In view of this, be necessary the flexible package lithium cell structure is improved.
The utility model content
For solving the problems of the technologies described above, the utility model provides a kind of flexible package lithium cell, can avoid the aluminium lamination short circuit of lithium battery anode ear or negative electrode lug and aluminum-plastic composite membrane in encapsulation process, effectively prevent the aluminium lamination corrosion, and can reduce the inflatable ratio of flexible package lithium cell.
the technical scheme that the utility model adopts is: a kind of flexible package lithium cell is provided, comprise aluminum-plastic composite membrane, the lug insulating cement, anode ear, negative electrode lug and volume core, described anode ear and negative electrode lug all weld with the volume core, the outside of described anode ear and negative electrode lug all is packaged with aluminum-plastic composite membrane, and be equipped with the lug insulating cement between anode ear and aluminum-plastic composite membrane and between negative electrode lug and aluminum-plastic composite membrane, described lug insulating cement is divided into paste section and folding portion along the length direction of anode ear or negative electrode lug, anode ear or negative electrode lug are close in described paste section, described folding portion turns down downwards along the end of the aluminum-plastic composite membrane on anode ear or negative electrode lug, and be adjacent to aluminum-plastic composite membrane.
Preferably, on described anode ear, the quantity of lug insulating cement is two, and during stickup, two lug insulating cements are wrapped in all sides of anode ear.
Preferably, on described negative electrode lug, the quantity of lug insulating cement is two, and during stickup, two lug insulating cements are wrapped in all sides of negative electrode lug.
Preferably, the material of described lug insulating cement is PP glue or PE glue.
Useful technique effect of the present utility model is: the utility model provides a kind of flexible package lithium cell, by the lug insulating cement is divided into folding portion and paste section two parts along the length direction of anode ear or negative electrode lug, this paste section is adjacent to anode ear or negative electrode lug, plays anode ear and aluminum-plastic composite membrane or negative electrode lug and aluminum-plastic composite membrane; This folding portion is along turning under the end of aluminum-plastic composite membrane, and be close to aluminum-plastic composite membrane, and in the time of can effectively avoiding the turnover of anode ear or negative electrode lug, aluminium lamination and anode ear or negative electrode lug short circuit that aluminum-plastic composite membrane is vertical, effectively prevent the aluminium lamination corrosion, and can reduce the inflatable ratio of flexible package lithium cell.
Description of drawings
Fig. 1 is the structural representation of the utility model flexible package lithium cell;
Fig. 2 is the end view of the utility model flexible package lithium cell;
Fig. 3 is the schematic cross-section at A place in Fig. 2;
Fig. 4 be in the utility model negative electrode lug and lug insulating cement concern schematic diagram;
Fig. 5 is the schematic diagram of the utility model one embodiment.
Label declaration:
1-lug insulating cement, the 11a-folding portion, the 11b-paste section, the 2a-anode ear, the 2b-negative electrode lug, the 3-aluminum-plastic composite membrane, the 31-aluminium lamination, 4-rolls up core.
Embodiment
By describing technology contents of the present utility model, structural feature in detail, being realized purpose and effect, below in conjunction with execution mode and coordinate accompanying drawing to be explained in detail.
see also Fig. 1 to Fig. 3, the present embodiment provides a kind of flexible package lithium cell, comprise aluminum-plastic composite membrane 3, lug insulating cement 1, anode ear 2a, negative electrode lug 2b, electrolyte and volume core 4, described anode ear 2a and negative electrode lug 2b all weld with volume core 4, the outside of described anode ear 2a and negative electrode lug 2b all is packaged with aluminum-plastic composite membrane 3, and be equipped with lug insulating cement 1 between anode ear 2a and aluminum-plastic composite membrane 3 and between negative electrode lug 2b and aluminum-plastic composite membrane 3, described lug insulating cement 1 is divided into paste section and folding portion 11a along the length direction of anode ear 2a or negative electrode lug 2b, described paste section 11b is close to anode ear 2a or negative electrode lug 2b, described folding portion 11a turns down downwards along the end of the aluminum-plastic composite membrane 3 on anode ear 2a or negative electrode lug 2b, and be adjacent to aluminum-plastic composite membrane 3.
During encapsulation: anode ear 2a and the negative electrode lug 2b that will be pasted with lug insulating cement 1 paste section 11b are welded in respectively on volume core 4, and will roll up core 4 and put into and rush reeded aluminum-plastic composite membrane 3, form battery core after hot melt, and turn under the folding portion 11a with the upper lug insulating cement 1 of anode ear 2a and negative electrode lug 2b and be adjacent to aluminum-plastic composite membrane 3, then will anode ear 2a and negative electrode lug 2b turnover downwards after the fixing battery structure that forms.
Consult Fig. 4, above-mentioned lug insulating cement 1 is divided into top and the bottom two parts along the direction of dotted line, and top is divided into folding portion 11a, and the bottom is divided into paste section 11b.
Consult Fig. 5, in a specific embodiment, the quantity of the upper lug insulating cement 1 of described anode ear 2a is two, and during stickup, two lug insulating cements 1 are wrapped in all sides of anode ear 2a; The quantity of the upper lug insulating cement 1 of described negative electrode lug 2b is two, and during stickup, two lug insulating cements 1 are wrapped in all sides of negative electrode lug 2b.Two lug insulating cements, 1 parcel lugs, convenient operation, and wrap up tightly, and be beneficial to aluminium lamination 31 isolation in anode ear 2a and negative electrode lug 2b and aluminum-plastic composite membrane 3, keep insulating.
The material of the described lug insulating cement 1 of ethene is PP glue (polypropylene) or PE glue (vinyl polymerization forms) in a specific embodiment.The long service life of this lug insulating cement 1, insulation effect is better, the battery that can guarantee.
The utility model provides a kind of flexible package lithium cell, by the lug insulating cement is divided into folding portion and paste section two parts along the length direction of anode ear or negative electrode lug, this paste section is adjacent to anode ear or negative electrode lug, plays anode ear and aluminum-plastic composite membrane or negative electrode lug and aluminum-plastic composite membrane; This folding portion is along turning under the end of aluminum-plastic composite membrane, and be close to aluminum-plastic composite membrane, in the time of can effectively avoiding anode ear or negative electrode lug to turn down downwards, aluminium lamination in aluminum-plastic composite membrane and anode ear or negative electrode lug short circuit, effectively prevent the aluminium lamination corrosion, and can reduce the inflatable ratio of flexible package lithium cell, after the folding portion turnover in the lug insulating cement, can reduce the height of lithium battery, promote the volume energy density of lithium battery.
The above is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in scope of patent protection of the present utility model.
Claims (4)
1. flexible package lithium cell, comprise aluminum-plastic composite membrane, the lug insulating cement, anode ear, negative electrode lug and volume core, described anode ear and negative electrode lug all weld with the volume core, the outside of described anode ear and negative electrode lug all is packaged with aluminum-plastic composite membrane, and be equipped with the lug insulating cement between anode ear and aluminum-plastic composite membrane and between negative electrode lug and aluminum-plastic composite membrane, it is characterized in that, described lug insulating cement is divided into paste section and folding portion along the length direction of anode ear or negative electrode lug, anode ear or negative electrode lug are close in described paste section, described folding portion turns down downwards along the end of the aluminum-plastic composite membrane on anode ear or negative electrode lug, and be adjacent to aluminum-plastic composite membrane.
2. flexible package lithium cell according to claim 1, is characterized in that, on described anode ear, the quantity of lug insulating cement is two, and during stickup, two lug insulating cements are wrapped in all sides of anode ear.
3. flexible package lithium cell according to claim 1, is characterized in that, on described negative electrode lug, the quantity of lug insulating cement is two, and during stickup, two lug insulating cements are wrapped in all sides of negative electrode lug.
4. according to claim 1-3 described flexible package lithium cells of any one, is characterized in that, the material of described lug insulating cement is PP glue or PE glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205414226U CN202940278U (en) | 2012-10-22 | 2012-10-22 | Flexible packaging lithium cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205414226U CN202940278U (en) | 2012-10-22 | 2012-10-22 | Flexible packaging lithium cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202940278U true CN202940278U (en) | 2013-05-15 |
Family
ID=48324501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205414226U Expired - Fee Related CN202940278U (en) | 2012-10-22 | 2012-10-22 | Flexible packaging lithium cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202940278U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016169025A1 (en) * | 2015-04-23 | 2016-10-27 | 长园科技实业股份有限公司 | Packaging structure of flexibly packaged lithium battery |
| CN112086585A (en) * | 2019-06-14 | 2020-12-15 | 东莞新能德科技有限公司 | Battery with a battery cell |
| CN117458054A (en) * | 2023-12-25 | 2024-01-26 | 中航锂电（洛阳）有限公司 | Partial pressure structure, battery monomer, battery and power consumption device |
-
2012
- 2012-10-22 CN CN2012205414226U patent/CN202940278U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016169025A1 (en) * | 2015-04-23 | 2016-10-27 | 长园科技实业股份有限公司 | Packaging structure of flexibly packaged lithium battery |
| US10581036B2 (en) | 2015-04-23 | 2020-03-03 | Changs Ascending Enterprise Co., Ltd. | Package structure of soft package lithium battery |
| CN112086585A (en) * | 2019-06-14 | 2020-12-15 | 东莞新能德科技有限公司 | Battery with a battery cell |
| US20200395580A1 (en) * | 2019-06-14 | 2020-12-17 | Dongguan Nvt Technology Limited | Battery |
| CN112086585B (en) * | 2019-06-14 | 2023-09-26 | 东莞新能德科技有限公司 | Battery cell |
| CN117458054A (en) * | 2023-12-25 | 2024-01-26 | 中航锂电（洛阳）有限公司 | Partial pressure structure, battery monomer, battery and power consumption device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190715 Granted publication date: 20130515 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210715 Granted publication date: 20130515 |
|
| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20201022 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |