CN211957697U - Soft package lithium ion battery with double sealing - Google Patents
Soft package lithium ion battery with double sealing Download PDFInfo
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- CN211957697U CN211957697U CN202020551027.0U CN202020551027U CN211957697U CN 211957697 U CN211957697 U CN 211957697U CN 202020551027 U CN202020551027 U CN 202020551027U CN 211957697 U CN211957697 U CN 211957697U
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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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Abstract
The utility model provides a soft package lithium ion battery with double sealing, which comprises a battery packaging bag, wherein the battery packaging bag comprises a packaging main body bag, two sides of the packaging main body bag are respectively connected with a first side leakage-proof bag and a second side leakage-proof bag, and the top of the packaging main body bag is provided with a top leakage-proof bag; a first inner side sealing tape is arranged between the first side leakage-proof bag and the packaging main bag, a first outer side sealing tape is arranged on one side of the first side leakage-proof bag, and a first end sealing tape is arranged at one end of the first side leakage-proof bag; a second inner side sealing strip is arranged between the second side leakage-proof bag and the packaging main bag, a second outer side sealing strip is arranged on one side of the second side leakage-proof bag, and a second end sealing strip is arranged at one end of the second side leakage-proof bag; an inner top sealing belt is arranged between the top leakage-proof bag and the packaging main body bag, an outer top sealing belt is arranged on one side of the top leakage-proof bag, and third end sealing belts are arranged at two ends of the top leakage-proof bag. The utility model discloses three openings at battery wrapping bag all are provided with dual banding structure, have good sealed leak protection liquid performance.
Description
Technical Field
The utility model relates to a lithium ion battery specifically discloses a soft packet of lithium ion battery of dual sealing.
Background
The soft package lithium battery is a liquid lithium battery which is sleeved with a layer of polymer shell, is structurally packaged by an aluminum plastic film, and has the advantages of light weight, large capacity, small internal resistance, flexible design and the like. Under the condition of potential safety hazard, the soft package lithium ion battery can be blown and cracked, and leakage is finally caused.
When the soft package lithium ion battery is packaged, the aluminum plastic film is folded and wrapped around the battery core, then the edges of the two openings of the aluminum plastic film are subjected to hot-press sealing to obtain a packaging bag, and after electrolyte is filled into the last opening of the packaging bag, the last opening is subjected to hot-press sealing. Under the condition that the potential safety hazard occurs, the electrolyte inside the soft package lithium ion battery is gasified and can bulge, and the air pressure which can not be released inside can strongly impact the sealing belt structure, so that the packaging bag is cracked and leaked.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a soft package lithium ion battery with double sealing for solving the problems in the prior art, which has good sealing and liquid leakage prevention performance and long service life.
In order to solve the prior art problem, the utility model discloses a soft package lithium ion battery with double sealing, which comprises a battery packaging bag, wherein the battery packaging bag comprises a packaging main body bag, two sides of the packaging main body bag are respectively connected with a first side leakage-proof bag and a second side leakage-proof bag, and the top of the packaging main body bag is provided with a top leakage-proof bag;
the packaging main body bag is internally provided with a battery cell which is connected with a positive electrode and a negative electrode, and the positive electrode and the negative electrode both penetrate through the top leakage-proof bag;
a first inner side sealing strip is arranged between the first side leakage-proof bag and the packaging main bag, a first outer side sealing strip is arranged on one side of the first side leakage-proof bag, which is far away from the packaging main bag, and a first end sealing strip is arranged at one end of the first side leakage-proof bag, which is close to the top leakage-proof bag;
a second inner side sealing strip is arranged between the second side leakage-proof bag and the packaging main bag, a second outer side sealing strip is arranged on one side of the second side leakage-proof bag, which is far away from the packaging main bag, and a second end sealing strip is arranged on one end, close to the top leakage-proof bag, of the second side leakage-proof bag;
an inner top sealing belt is arranged between the top leakage-proof bag and the packaging main body bag, an outer top sealing belt is arranged on one side, away from the packaging main body bag, of the top leakage-proof bag, and third end sealing belts are arranged at two ends of the top leakage-proof bag.
Furthermore, the battery packaging bag is an aluminum plastic film packaging bag.
Furthermore, the surface of the first side leakage-proof bag is connected with the surface of the packaging main bag through the first side adhesive layer, and the surface of the second side leakage-proof bag is connected with the surface of the packaging main bag through the second side adhesive layer.
Furthermore, the outer surface of the top leakage-proof bag is connected with the outer surface of the packaging main bag through a top adhesive layer.
Furthermore, the positive electrode and the negative electrode are folded and pasted on the outer surface of the packaging main bag, the positive electrode is fixedly connected with the packaging main bag through a first insulating glue layer, and the negative electrode is fixedly connected with the packaging main bag through a second insulating glue layer.
The utility model has the advantages that: the utility model discloses a soft packet of lithium ion battery of dual sealing all is provided with dual banding structure at the three openings of battery wrapping bag to effectively improve the reliability of sealing structure, when the banding in inside is propped brokenly and is torn, leak protection bag structure still can effectively collect electrolyte, avoids electrolyte directly to spill external environment, and this soft packet of lithium ion battery has good sealed leak protection liquid performance, long service life.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic cross-sectional view taken along a-a' in fig. 1.
Fig. 3 is the utility model discloses well battery packaging bag's tiling structure sketch map.
The reference signs are: the battery packaging bag 10, the battery cell 20, the positive electrode 21, the first insulating glue layer 211, the negative electrode 22, the second insulating glue layer 221, the packaging main bag 30, the first inner side sealing tape 31, the second inner side sealing tape 32, the inner top sealing tape 33, the first side leakage-proof bag 40, the first side adhesive layer 401, the first outer side sealing tape 41, the first end sealing tape 42, the second side leakage-proof bag 50, the second side adhesive layer 501, the second outer side sealing tape 51, the second end sealing tape 52, the top leakage-proof bag 60, the top adhesive layer 601, the outer top sealing tape 61, and the third end sealing tape 62.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Refer to fig. 1 to 3.
The embodiment of the utility model discloses soft packet of lithium ion battery of dual sealing, including battery wrapping bag 10, battery wrapping bag 10 includes packing main body bag 30, and the both sides of packing main body bag 30 are connected with first side leak protection bag 40 and second side leak protection bag 50 respectively, and the top of packing main body bag 30 is equipped with a leak protection bag 60, and the bottom of packing main body bag 30 is a turnover structure, and the bottom of first side leak protection bag 40 and second side leak protection bag 50 is a turnover structure;
the packaging main body bag 30 is internally provided with a battery cell 20, the packaging main body bag 30 is also filled with electrolyte, the battery cell 20 is connected with a positive electrode 21 and a negative electrode 22, and the positive electrode 21 and the negative electrode 22 both penetrate through the top leakage-proof bag 60;
a first inner side sealing tape 31 is arranged between the first side leakage-proof bag 40 and the packaging main body bag 30, a first outer side sealing tape 41 is arranged on one side of the first side leakage-proof bag 40 far away from the packaging main body bag 30, a first end sealing tape 42 is arranged at one end of the first side leakage-proof bag 40 close to the top leakage-proof bag 60, and the first side leakage-proof bag 40 is a sealing structure;
a second inner side sealing tape 32 is arranged between the second side leakage-proof bag 50 and the packaging main body bag 30, a second outer side sealing tape 51 is arranged on one side of the second side leakage-proof bag 50 away from the packaging main body bag 30, a second end sealing tape 52 is arranged at one end of the second side leakage-proof bag 50 close to the top leakage-proof bag 60, and the second side leakage-proof bag 50 is of a sealing structure;
an inner top sealing belt 33 is arranged between the top leakage-proof bag 60 and the packaging main body bag 30, one side, far away from the packaging main body bag 30, of the top leakage-proof bag 60 is provided with an outer top sealing belt 61, the two ends of the top leakage-proof bag 60 are provided with third end sealing belts 62, namely the two end sealing belts are respectively close to the first side leakage-proof belt and the second side leakage-proof belt, and the top leakage-proof bag 60 is of a sealing structure.
During packaging, two of the first outside sealing tape 41, the second outside sealing tape 51 and the inner top sealing tape 33 are obtained by sealing edges after the electric core 20 is installed on the packaging main body bag 30, then electrolyte is injected into the packaging main body bag 30, and finally the first outside sealing tape 41, the second outside sealing tape 51 and the inner top sealing tape 33 are sealed at one position without being sealed, so that a sealed packaging main body bag 30 structure is obtained, the first side leakage-proof bag 40, the second side leakage-proof bag 50 and the top leakage-proof bag 60 are vacuumized, and finally the first outside sealing tape 41, the first end sealing tape 42, the second outside sealing tape 51, the second end sealing tape 52, the outer top sealing tape 61 and the third end sealing tape 62 are sealed in a hot-pressing manner. When the package is expanded due to external impact, electrolyte gasification and other conditions, the first inner side sealing tape 31, the second inner side sealing tape 32 and the inner top sealing tape 33 are stretched and torn, the first side leakage-proof bag 40, the second side leakage-proof bag 50 and the top leakage-proof bag 60 can effectively collect the electrolyte leaked from the tearing part, the electrolyte is prevented from leaking out of the battery packaging bag 10, and the battery packaging bag has good liquid leakage-proof safety performance.
In this embodiment, the battery pack 10 is an aluminum-plastic film pack, and the aluminum-plastic film has good puncture resistance and electrolyte stability.
In this embodiment, the both ends at packaging main body bag 30 top are equipped with one respectively and strengthen oblique banding area, strengthen oblique banding area set up in the top in the banding area respectively with first inboard banding 31 and the inboard connecting portion of the inboard banding 32 of second inboard, because packaging main body bag 30 top corner position is not by complete cladding, the tip department at edge only has one heavy protection, set up to strengthen oblique banding area and can effectively increase protection seal structure to tip position, can effectively improve prevention of liquid leakage performance.
In this embodiment, first side leak protection bag 40 turns over a surface of pasting in packaging main body bag 30, the surface of first side leak protection bag 40 passes through first side adhesive layer 401 and packaging main body bag 30's surface connection, second side leak protection bag 50 turns over a surface of pasting in packaging main body bag 30, the surface of second side leak protection bag 50 passes through second side adhesive layer 501 and packaging main body bag 30's surface connection, can effectively control soft packet of lithium ion battery's shape, it is uncertain to avoid first side leak protection bag 40 or second side leak protection bag 50 to rock in the outer space, soft packet of lithium ion battery's structure is more stable.
Based on the above embodiment, the top leakage-proof bag 60 is folded and attached to the outer surface of the packaging main bag 30, and the outer surface of the top leakage-proof bag 60 is connected with the outer surface of the packaging main bag 30 through the top adhesive layer 601, so that the influence on the use caused by the unstable shaking of the top leakage-proof bag 60 in the external space can be effectively avoided.
In this embodiment, the positive electrode 21 and the negative electrode 22 are folded and attached to the outer surface of the packaging main bag 30, the positive electrode 21 is fixedly connected with the packaging main bag 30 through the first insulating glue layer 211, and the negative electrode 22 is fixedly connected with the packaging main bag 30 through the second insulating glue layer 221, so that the positions of the positive electrode 21 and the negative electrode 22 can be effectively stabilized, and the positive electrode 21 and the negative electrode 22 are prevented from being broken and damaged in the transportation or use process.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (5)
1. The double-sealed soft package lithium ion battery is characterized by comprising a battery packaging bag (10), wherein the battery packaging bag (10) comprises a packaging main body bag (30), two sides of the packaging main body bag (30) are respectively connected with a first side leakage-proof bag (40) and a second side leakage-proof bag (50), and the top of the packaging main body bag (30) is provided with a top leakage-proof bag (60);
a battery cell (20) is arranged in the packaging main body bag (30), the battery cell (20) is connected with a positive electrode (21) and a negative electrode (22), and the positive electrode (21) and the negative electrode (22) both penetrate through a top leakage-proof bag (60);
a first inner side sealing tape (31) is arranged between the first side leakage-proof bag (40) and the packaging main body bag (30), a first outer side sealing tape (41) is arranged on one side of the first side leakage-proof bag (40) far away from the packaging main body bag (30), and a first end sealing tape (42) is arranged at one end of the first side leakage-proof bag (40) close to the top leakage-proof bag (60);
a second inner side sealing tape (32) is arranged between the second side leakage-proof bag (50) and the packaging main body bag (30), a second outer side sealing tape (51) is arranged on one side, far away from the packaging main body bag (30), of the second side leakage-proof bag (50), and a second end sealing tape (52) is arranged at one end, close to the top leakage-proof bag (60), of the second side leakage-proof bag (50);
an inner top sealing belt (33) is arranged between the top leakage-proof bag (60) and the packaging main body bag (30), an outer top sealing belt (61) is arranged on one side, far away from the packaging main body bag (30), of the top leakage-proof bag (60), and third end sealing belts (62) are arranged at two ends of the top leakage-proof bag (60).
2. The soft lithium ion battery with double sealing according to claim 1, wherein the battery packaging bag (10) is an aluminum plastic film packaging bag.
3. The soft-package lithium ion battery with double sealing according to claim 1, wherein the outer surface of the first side leakage-proof bag (40) is connected with the outer surface of the packaging main bag (30) through a first side adhesive layer (401), and the outer surface of the second side leakage-proof bag (50) is connected with the outer surface of the packaging main bag (30) through a second side adhesive layer (501).
4. The soft-package lithium ion battery with double sealing according to claim 3, wherein the outer surface of the top leakage-proof bag (60) is connected with the outer surface of the packaging main bag (30) through a top adhesive layer (601).
5. The double-sealed soft-package lithium ion battery according to claim 1, wherein the positive electrode (21) and the negative electrode (22) are folded and attached to the outer surface of the packaging main body bag (30), the positive electrode (21) is fixedly connected with the packaging main body bag (30) through a first insulating glue layer (211), and the negative electrode (22) is fixedly connected with the packaging main body bag (30) through a second insulating glue layer (221).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020551027.0U CN211957697U (en) | 2020-04-14 | 2020-04-14 | Soft package lithium ion battery with double sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020551027.0U CN211957697U (en) | 2020-04-14 | 2020-04-14 | Soft package lithium ion battery with double sealing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211957697U true CN211957697U (en) | 2020-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020551027.0U Active CN211957697U (en) | 2020-04-14 | 2020-04-14 | Soft package lithium ion battery with double sealing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211957697U (en) |
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2020
- 2020-04-14 CN CN202020551027.0U patent/CN211957697U/en active Active
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