CN202678473U - Edge folding structure of soft-package lithium battery - Google Patents
Edge folding structure of soft-package lithium battery Download PDFInfo
- Publication number
- CN202678473U CN202678473U CN2012203319049U CN201220331904U CN202678473U CN 202678473 U CN202678473 U CN 202678473U CN 2012203319049 U CN2012203319049 U CN 2012203319049U CN 201220331904 U CN201220331904 U CN 201220331904U CN 202678473 U CN202678473 U CN 202678473U
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- China
- Prior art keywords
- package lithium
- flanging
- lithium cell
- flexible package
- adhesive
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- 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 - Lifetime
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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
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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses an edge folding structure of a soft-package lithium battery. The edge folding structure comprises a side edge of the soft-package lithium battery, and a double-folding edge which is folded by package aluminum foil of a battery core of the soft-package lithium battery; an adhesive layer is arranged between the double-folding edge and the side edge; and one side of the adhesive layer is adhered and connected with the side edge, and the other side of the adhesive layer is adhered and connected with the double-folding edge. The structure has the advantages that a side surface adhesive is not required to be coated and the structure meets the functions of preventing metal at an edge cutting position from leaking outside and preventing the width of the battery core from increscent by fixing the side edge; and compared with the common manner of sticking the side surface adhesive, the automatic production is easy to realize.
Description
Technical field
The utility model relates to the flexible packing lithium ion battery technical field, refers in particular to a kind of folded edges of soft bag lithium ionic cell.
Background technology
In traditional Soft Roll encapsulating structure, wrap up in battery edge sealing place because the aluminium lamination that leaks outside of cutting edge and producing for preventing battery core corrosion or need to protecting with gummed paper with extraneous short circuit, the method for employing has multiple.Fig. 1 is described to be that single flanging of commonly using adds the fixing structure of side glue, battery core main body 1 has formed the sidewall 2 of battery core after packaging foil encapsulates, with seal is folded up after single flanging 3, adhesive tape 4 by one deck single spreading is fixed on sidewall 2 places to single flanging 3 at last, guarantees the insulation of cutting edge and prevents opening of single flanging 3.Fig. 2 is a kind of structure of double-fold, and single flanging has been become double-fold 5, can be in the situation that guarantee enough less flanging height of wide formation of seal.
The shortcoming of Fig. 1 and two kinds of structures of Fig. 2 is that the side adhesive tape need to be attached on the battery core main body 1, thereby has increased the thickness of battery core main body.Volume energy density at battery requires under the more and more higher market demands, as shown in Figure 3, China Patent No. is that 201120192837.2 utility model patent discloses a kind of flexible package lithium cell edge sealing fixed structure, the metal that this edge sealing fixed structure uses 6 pairs of seal places of glue, side the to expose isolation of insulating, and then utilize adhesive side glue 6 to be bonded in the sidewall of battery core.Yet the automation of this kind gluing structure requires the complexity of equipment high, and the manufacturing cost of the side glue that cooperates with it is very high, and the product yield of production and efficient are not high.
The utility model content
The purpose of this utility model is for the deficiencies in the prior art, folded edges of a kind of soft bag lithium ionic cell and preparation method thereof is provided, it is when improving the volume energy density of battery core, cancellation side gummed paper promotes the efficient of automated production and the yield of product simultaneously to reduce production costs.
For realizing this purpose, the utility model provides a kind of folded edges of soft bag lithium ionic cell, and this technical scheme is as follows:
A kind of folded edges of flexible package lithium cell, the double-fold that comprises the side of flexible package lithium cell and use the packaging foil of the battery core of flexible package lithium cell to be converted into, be provided with adhesive-layer between described double-fold and the described side, one side and the described side of described adhesive-layer are bonding, and the opposite side of described adhesive-layer and described double-fold are bonding.
Described double-fold comprises the first flanging and the second flanging, and wherein, described the first flanging is near described side.
The minimum length of described the first flanging is greater than 0.5mm, and the length of described the first flanging is less than the length of described the second flanging.
The lateral surface of described the first flanging is 0.2～1.0mm to the distance of the lateral surface of described the second flanging.
A wherein side and the described side of described adhesive-layer are bonding, and the medial surface of the opposite side of described adhesive-layer and described the first flanging is bonding.
A wherein side and the described side of described adhesive-layer are bonding, and described the first flanging embeds in the described adhesive linkage.
A wherein side and the described side of described adhesive-layer are bonding, and the medial surface of the opposite side of described adhesive-layer and described the second flanging is bonding.
The height of described double-fold is less than or equal to the height of flexible package lithium cell.
The height of described double-fold is greater than the height of flexible package lithium cell.
The beneficial effects of the utility model are: the utility model has adopted the double-fold structure in the side of flexible package lithium cell, by adhesive linkage double-fold is fixed on simultaneously the side of flexible package lithium cell, cancellation side gummed paper is to reduce production costs, when improving the volume energy density of battery core, promote simultaneously the efficient of automated production and the yield of product.
Description of drawings
Fig. 1 is the structural representation of single folded edges of a kind of existing flexible package lithium cell side.
Fig. 2 is the structural representation of the double-fold structure of a kind of existing flexible package lithium cell side.
Fig. 3 is a kind of structural representation of existing flexible package lithium cell edge sealing fixed structure.
Fig. 4 is the structural representation of embodiment 1 of the folded edges of a kind of flexible package lithium cell of the present utility model.
Fig. 5 is the structural representation of embodiment 2 of the folded edges of a kind of flexible package lithium cell of the present utility model.
Fig. 6 is the structural representation of embodiment 3 of the folded edges of a kind of flexible package lithium cell of the present utility model.
Embodiment
See Fig. 4, this is embodiment 1 of the present utility model, a kind of folded edges of flexible package lithium cell, the double-fold 22 that comprises the side 21 of flexible package lithium cell 20 and use the packaging foil of the battery core of flexible package lithium cell 20 to be converted into, be provided with adhesive-layer 23 between double-fold 22 and 1 side 21, one side and the side 21 of adhesive-layer 23 are bonding, and the opposite side of adhesive-layer 23 and double-fold 33 are bonding.
Double-fold 22 comprises the first flanging 221 and the second flanging 222, and wherein, the first flanging 221 is near side 21.
Preferably, the minimum length of the first flanging 221 is greater than 0.5mm, and the length of the first flanging 221 is less than the length of described the second flanging 222.
Preferably, the lateral surface of the first flanging 221 is 0.2～1.0mm to the distance of the lateral surface of the second flanging 222.
In the present embodiment, a wherein side and the side 21 of adhesive-layer 23 are bonding, and the medial surface of the opposite side of adhesive-layer 23 and the first flanging 221 is bonding.
Preferably, the height of double-fold 22 is less than or equal to the height of flexible package lithium cell 20, and certainly, in the situation that particular requirement, the height of double-fold 22 also can be greater than the height of flexible package lithium cell 20.
See Fig. 5, this is embodiment 2 of the present utility model, as different from Example 1, in the present embodiment, a wherein side and the side 21 of adhesive-layer 23 are bonding, and the first flanging 221 embeds in the adhesive linkage 23, other structure is identical with the structure of embodiment 1, no longer repeats here.
See Fig. 6, this is embodiment 3 of the present utility model, as different from Example 1, in the present embodiment, a wherein side and the side 21 of adhesive-layer 23 are bonding, and the medial surface of the opposite side of adhesive-layer 23 and the second flanging 222 is bonding, other structure is identical with the structure of embodiment 1, no longer repeats here.
The according to the above description announcement of book and instruction, the utility model those skilled in the art can also carry out suitable change and modification to above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the utility model is not limited to also should fall in the protection range of claim of the present utility model modifications and changes more of the present utility model.In addition, although this specification has used some specific terms, these terms do not consist of any restriction to the utility model just for convenience of description.
Claims (9)
1. the folded edges of a flexible package lithium cell, the double-fold that comprises the side of flexible package lithium cell and use the packaging foil of the battery core of flexible package lithium cell to be converted into, it is characterized in that: be provided with adhesive-layer between described double-fold and the described side, one side and the described side of described adhesive-layer are bonding, and the opposite side of described adhesive-layer and described double-fold are bonding.
2. the folded edges of flexible package lithium cell according to claim 1, it is characterized in that: described double-fold comprises the first flanging and the second flanging, wherein, described the first flanging is near described side.
3. the folded edges of flexible package lithium cell according to claim 2, it is characterized in that: the minimum length of described the first flanging is greater than 0.5mm, and the length of described the first flanging is less than the length of described the second flanging.
4. the folded edges of flexible package lithium cell according to claim 1, it is characterized in that: the lateral surface of described the first flanging is 0.2～1.0mm to the distance of the lateral surface of described the second flanging.
5. the folded edges of flexible package lithium cell according to claim 1, it is characterized in that: a wherein side and the described side of described adhesive-layer are bonding, and the medial surface of the opposite side of described adhesive-layer and described the first flanging is bonding.
6. the folded edges of flexible package lithium cell according to claim 1, it is characterized in that: a wherein side and the described side of described adhesive-layer are bonding, and described the first flanging embeds in the described adhesive linkage.
7. the folded edges of flexible package lithium cell according to claim 1, it is characterized in that: a wherein side and the described side of described adhesive-layer are bonding, and the medial surface of the opposite side of described adhesive-layer and described the second flanging is bonding.
8. the folded edges of flexible package lithium cell according to claim 1, it is characterized in that: the height of described double-fold is less than or equal to the height of flexible package lithium cell.
9. the folded edges of flexible package lithium cell according to claim 1, it is characterized in that: the height of described double-fold is greater than the height of flexible package lithium cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203319049U CN202678473U (en) | 2012-07-10 | 2012-07-10 | Edge folding structure of soft-package lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203319049U CN202678473U (en) | 2012-07-10 | 2012-07-10 | Edge folding structure of soft-package lithium battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678473U true CN202678473U (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203319049U Expired - Lifetime CN202678473U (en) | 2012-07-10 | 2012-07-10 | Edge folding structure of soft-package lithium battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202678473U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969533A (en) * | 2012-07-10 | 2013-03-13 | 东莞新能源科技有限公司 | Flanging structure of soft package lithium ion battery and its making method |
| CN105098253A (en) * | 2014-05-21 | 2015-11-25 | 东莞新能源科技有限公司 | Double-flanging device for soft package lithium-ion battery |
| CN106356565A (en) * | 2016-10-13 | 2017-01-25 | 安徽巨大电池技术有限公司 | Lithium battery pack |
| CN107293774A (en) * | 2017-07-11 | 2017-10-24 | 郑素珍 | A kind of lithium battery double-fold method |
| CN112531214A (en) * | 2019-08-30 | 2021-03-19 | 中科邦汇新材料科技(东莞)有限公司 | Novel lithium battery forming and gluing process |
-
2012
- 2012-07-10 CN CN2012203319049U patent/CN202678473U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102969533A (en) * | 2012-07-10 | 2013-03-13 | 东莞新能源科技有限公司 | Flanging structure of soft package lithium ion battery and its making method |
| EP2685517A1 (en) * | 2012-07-10 | 2014-01-15 | Dongguan Amperex Technology Limited | A soft-package lithium battery edge fold structure |
| CN105098253A (en) * | 2014-05-21 | 2015-11-25 | 东莞新能源科技有限公司 | Double-flanging device for soft package lithium-ion battery |
| CN106356565A (en) * | 2016-10-13 | 2017-01-25 | 安徽巨大电池技术有限公司 | Lithium battery pack |
| CN106356565B (en) * | 2016-10-13 | 2019-09-20 | 安徽巨大电池技术有限公司 | Lithium battery group |
| CN107293774A (en) * | 2017-07-11 | 2017-10-24 | 郑素珍 | A kind of lithium battery double-fold method |
| CN112531214A (en) * | 2019-08-30 | 2021-03-19 | 中科邦汇新材料科技(东莞)有限公司 | Novel lithium battery forming and gluing process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |
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| CX01 | Expiry of patent term |