CN201638865U - Battery packaging foil - Google Patents
Battery packaging foil Download PDFInfo
- Publication number
- CN201638865U CN201638865U CN2010201560188U CN201020156018U CN201638865U CN 201638865 U CN201638865 U CN 201638865U CN 2010201560188 U CN2010201560188 U CN 2010201560188U CN 201020156018 U CN201020156018 U CN 201020156018U CN 201638865 U CN201638865 U CN 201638865U
- Authority
- CN
- China
- Prior art keywords
- paper tinsel
- layer
- intermediate layer
- cell package
- tack coat
- 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 - 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
Abstract
The utility model discloses a battery packaging foil, which comprises a laminated adhesive layer, a middle layer and a surface protective layer, wherein a connecting surface of the middle layer and the adhesive layer is a non-flat straight surface. Compared with the prior art, through adopting a form of bending the connecting surface, the battery packaging foil lengthens electrolyte permeating path and changes electrolyte permeating directions, thereby being capable of effectively reducing electrolyte permeating risk, increasing sealing property of the packaging foil, prolonging service life of batteries, and simultaneously effectively reducing packaging foil corrosion probability.
Description
Technical field
The utility model relates to a kind of cell package paper tinsel, especially a kind of flexible-packed battery encapsulation paper tinsel with good seal performance.
Background technology
At present; the electric core of flexible-packed battery and electrolyte are by the encapsulation of encapsulation paper tinsel; the encapsulation paper tinsel generally comprises three blocking layer by layer; its structure be respectively from inside to outside as tack coat polypropylene (PP) layer, as the aluminium lamination of metal level with as the nylon layer of sealer, above-mentioned three-decker all is the uniform straight thin layer of thickness.As the battery packaging structure that Chinese patent application is disclosed for No. 200410098136.7, it will encapsulate by certain mode, and paper tinsel is folding, the bonding back forms a seal cavity, thereby electric core and electrolyte are sealed in wherein.The positive and negative lug of electricity core then exposes to outside the encapsulation paper tinsel, so that be the external circuits power supply.
See also shown in Figure 1ly, be the schematic diagram of having analysed and observe of the straight bonding part of two-layer encapsulation paper tinsel, the sealing property of this encapsulation paper tinsel is also bad, between tack coat 10 and aluminium foil 12 solution leakage takes place sometimes, thereby has influenced the useful life of battery.
In view of this, necessaryly provide a kind of cell package paper tinsel that can solve the problems of the technologies described above.
The utility model content
The purpose of this utility model is: a kind of flexible-packed battery encapsulation paper tinsel with good seal performance is provided.
To achieve these goals, the utility model provides a kind of cell package paper tinsel, and it comprises tack coat, intermediate layer and the sealer of lamination, and the joint face of intermediate layer and tack coat is non-flat facing directly.
With respect to prior art, the utility model cell package paper tinsel is by adopting the mode of crooked joint face, prolonged the path of electrolyte permeability, changed the direction of electrolyte permeability, therefore can effectively reduce the risk of electrolyte sepage, improve the sealing of encapsulation paper tinsel and the useful life of battery, can effectively reduce the probability of encapsulation paper tinsel corrosion.
As a kind of improvement of the utility model cell package paper tinsel, described intermediate layer is aluminium foil or stainless steel, and the joint face of itself and tack coat is provided with several depressed parts.
As a kind of improvement of the utility model cell package paper tinsel, described intermediate layer is provided with several lug bosses that protrudes to the sealer direction.
As a kind of improvement of the utility model cell package paper tinsel, described tack coat is the polypropylene layer that is complementary with the intermediate layer shape.
As a kind of improvement of the utility model cell package paper tinsel, described sealer is nylon layer or the polyester layer that is complementary with the intermediate layer shape.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the utility model cell package paper tinsel and useful technique effect thereof are elaborated, wherein:
Fig. 1 is the interlayer structure schematic diagram of existing cell package paper tinsel.
Fig. 2 is the interlayer structure schematic diagram of the utility model cell package paper tinsel.
Fig. 3 is the cross-sectional schematic of two-layer cell package paper tinsel shown in Figure 2 bonding part.
Embodiment
See also shown in Figure 2ly, the utility model cell package paper tinsel is three blocking layer by layer, and it comprises tack coat 22, intermediate layer 24 and sealer 26.Wherein, tack coat 22 is a polypropylene layer, and intermediate layer 24 is aluminium foil or stainless steel layer, and sealer 26 is nylon layer or polyester layer.At the edge sealing place of cell package paper tinsel, whole encapsulation paper tinsel is forced out several lug bosses 240 that protrudes outside sealer 26.Accordingly, the surface of tack coat 22 forms the depressed part that several and lug boss 240 are complementary, and therefore, intermediate layer 24 is non-flat facing directly with the joint face of tack coat 22.
See also shown in Figure 3, during with above-mentioned cell package paper tinsel packaged battery, form new tack coat 28 behind tack coat 22 hot melts at two-layer edge sealing place, tack coat 28 and up and down the joint face between two intermediate layers 24 all be non-flat facing directly, such encapsulating structure has not only prolonged the path of electrolyte permeability, and changed the direction of electrolyte permeability, reduced the excessive glue of edge sealing simultaneously, thereby reduced ion channel, therefore can effectively reduce the risk of electrolyte sepage, improve the sealing of encapsulation paper tinsel and the useful life of battery, can effectively reduce the probability of encapsulation paper tinsel corrosion.
Certainly; in other execution modes of the present utility model; the tack coat 22 of encapsulation paper tinsel can have different shapes with intermediate layer 24 with sealer 26; intermediate layer 24 also can be for facing directly or other shapes with the joint face of sealer 26; as long as intermediate layer 24 is non-flat facing directly with the joint face of tack coat 22, can realize the purpose of this utility model.The concrete shape of the depressed part on the intermediate layer 24, size, quantity can be adjusted according to actual needs.
Through test, compare with existing cell package paper tinsel, use the flexible-packed battery of the utility model encapsulation paper tinsel encapsulation, can improve 2～7 times its useful life.
The announcement of book and instruction according to the above description, 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 used some specific terms in this specification, these terms do not constitute any restriction to the utility model just for convenience of description.
Claims (5)
1. cell package paper tinsel, tack coat, intermediate layer and sealer that it comprises lamination is characterized in that: the joint face of described intermediate layer and tack coat is non-flat facing directly.
2. cell package paper tinsel according to claim 1 is characterized in that: described intermediate layer is aluminium foil or stainless steel, and the joint face of itself and tack coat is provided with several depressed parts.
3. cell package paper tinsel according to claim 2 is characterized in that: described intermediate layer is provided with several lug bosses that protrudes to the sealer direction.
4. according to claim 1,2 or 3 described cell package paper tinsels, it is characterized in that: described tack coat is the polypropylene layer that is complementary with the intermediate layer shape.
5. according to claim 1,2 or 3 described cell package paper tinsels, it is characterized in that: described sealer is nylon layer or the polyester layer that is complementary with the intermediate layer shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201560188U CN201638865U (en) | 2010-04-01 | 2010-04-01 | Battery packaging foil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201560188U CN201638865U (en) | 2010-04-01 | 2010-04-01 | Battery packaging foil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201638865U true CN201638865U (en) | 2010-11-17 |
Family
ID=43083369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201560188U Expired - Lifetime CN201638865U (en) | 2010-04-01 | 2010-04-01 | Battery packaging foil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201638865U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610770A (en) * | 2012-02-27 | 2012-07-25 | 宁德新能源科技有限公司 | Softly packaged lithium ion battery and package shell thereof |
| CN103262290A (en) * | 2010-12-21 | 2013-08-21 | 锂电池科技有限公司 | Film for protecting electrochemical energy stores |
| CN106058083A (en) * | 2016-08-19 | 2016-10-26 | 宁德时代新能源科技股份有限公司 | Laminate polymer battery shell and laminate polymer battery |
| KR20190061436A (en) * | 2017-11-28 | 2019-06-05 | 주식회사 엘지화학 | Laminate Sheet with Modified Internal Surface and Pouch-Type Battery Comprising the Same |
| WO2020125696A1 (en) * | 2018-12-18 | 2020-06-25 | 宁德新能源科技有限公司 | Battery cell and battery |
-
2010
- 2010-04-01 CN CN2010201560188U patent/CN201638865U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103262290A (en) * | 2010-12-21 | 2013-08-21 | 锂电池科技有限公司 | Film for protecting electrochemical energy stores |
| CN102610770A (en) * | 2012-02-27 | 2012-07-25 | 宁德新能源科技有限公司 | Softly packaged lithium ion battery and package shell thereof |
| CN106058083A (en) * | 2016-08-19 | 2016-10-26 | 宁德时代新能源科技股份有限公司 | Laminate polymer battery shell and laminate polymer battery |
| KR20190061436A (en) * | 2017-11-28 | 2019-06-05 | 주식회사 엘지화학 | Laminate Sheet with Modified Internal Surface and Pouch-Type Battery Comprising the Same |
| KR102374818B1 (en) * | 2017-11-28 | 2022-03-15 | 주식회사 엘지에너지솔루션 | Laminate Sheet with Modified Internal Surface and Pouch-Type Battery Comprising the Same |
| WO2020125696A1 (en) * | 2018-12-18 | 2020-06-25 | 宁德新能源科技有限公司 | Battery cell and battery |
| CN111341946A (en) * | 2018-12-18 | 2020-06-26 | 宁德新能源科技有限公司 | Battery core and battery |
| CN111341946B (en) * | 2018-12-18 | 2022-05-17 | 宁德新能源科技有限公司 | Battery core and battery |
| US11342616B2 (en) | 2018-12-18 | 2022-05-24 | Ningde Amperex Technology Limited | Cell and battery |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101117 |