CN213988964U - Battery with breathable film bag - Google Patents
Battery with breathable film bag Download PDFInfo
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- CN213988964U CN213988964U CN202022096462.1U CN202022096462U CN213988964U CN 213988964 U CN213988964 U CN 213988964U CN 202022096462 U CN202022096462 U CN 202022096462U CN 213988964 U CN213988964 U CN 213988964U
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- battery
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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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- Secondary Cells (AREA)
Abstract
The utility model relates to a lithium cell technical field, concretely relates to battery of ventilative film bag in area. The battery with the breathable film bag comprises a positive electrode material, a negative electrode material, a diaphragm, electrolyte, an aluminum-plastic film and the breathable film bag, wherein the diaphragm is located between the positive electrode material and the negative electrode material, the electrolyte is soaked in the positive electrode material, the negative electrode material and the diaphragm, the positive electrode material and the negative electrode material are connected through the electrolyte, an air bag is arranged on one side of the aluminum-plastic film, the breathable film bag is placed in the air bag on one side of the aluminum-plastic film, and the outer side of the aluminum-plastic film comprises a PP layer. The beneficial effects of the utility model are that active carbon in the ventilative film bag can absorb in the battery micro-moisture and change into the gas that produces, reduces gaseous deterioration to the battery performance with higher speed, and the electric core of taking ventilative film area is better than the electric core circulation performance who does not take the ventilative film bag in addition.
Description
Technical Field
The utility model relates to a lithium cell technical field, concretely relates to battery of ventilative film bag in area.
Background
Moisture in the lithium battery reacts with the electrolyte to generate HF and other gases, which deteriorate the battery performance. Moisture causes decomposition of the electrolyte lithium salt after the battery is charged, and generates gases, mainly including hydrogen, methane, ethylene, carbon monoxide, and the like, which accelerate deterioration of the battery performance during formation and capacity grading of the battery. For solving the problem, the utility model designs a take battery of ventilative film bag, ventilative film bag can in time absorb the gas that produces, and the battery performance that prepares like this is excellent, can reduce the requirement to ambient humidity in the production process simultaneously.
SUMMERY OF THE UTILITY MODEL
The method aims to overcome the defects that the moisture in the conventional lithium battery can cause the decomposition of electrolyte lithium salt after the battery is injected, gas is generated, and the gas can accelerate the deterioration of the battery performance during the formation and the capacity grading of the battery. The utility model provides a battery of ventilative film bag in area.
The battery with the breathable film bag is realized by the following technical scheme:
the battery with the breathable film bag comprises a positive electrode material, a negative electrode material, a diaphragm, electrolyte, an aluminum-plastic film and the breathable film bag, wherein the diaphragm is positioned between the positive electrode material and the negative electrode material, the electrolyte is soaked in the positive electrode material, the negative electrode material and the diaphragm, the positive electrode material and the negative electrode material are connected through the electrolyte, an air bag is arranged on one side of the aluminum-plastic film, the breathable film bag is placed in the air bag on one side of the aluminum-plastic film, and the outer side of the aluminum-plastic film comprises a PP layer.
Preferably, the material of the breathable film bag comprises activated carbon, alumina ceramic particles and polytetrafluoroethylene.
Preferably, the positive electrode material comprises lithium cobaltate, lithium manganate, ternary lithium titanate, lithium iron phosphate, lithium vanadium phosphate and activated carbon.
Preferably, the negative electrode material comprises graphite, hard carbon, activated carbon and lithium titanate.
Preferably, the breathable film bag is fused with the PP layer of the aluminum plastic film in the heat sealing process.
Preferably, the size of the breathable film pouch is 200mm by 20 mm.
Preferably, the activated carbon in the breathable film bag absorbs trace moisture and generated gas in the battery, so that the accelerated deterioration of the battery performance caused by the gas is reduced.
Preferably, the gas permeable film pouch does not react with the electrolyte.
Compared with the closest prior art, the utility model provides a technical scheme has following beneficial effect:
the utility model discloses activated carbon in the ventilative film bag can absorb micro-moisture in the battery and change into the gas that produces, reduces gaseous deterioration problem to the battery performance with higher speed, and the electric core of taking ventilative film area is better than the electric core cycling performance who does not take the ventilative film bag in addition.
Drawings
FIG. 1 is a diagram of a cell structure of a battery with a breathable film bag
FIG. 2 is a diagram showing the cell cycle comparison of a battery with a gas permeable film pouch
Wherein, 1, 2 cathode materials, 3 diaphragms, 4 anode materials, 5 aluminum plastic films, 6 electrolyte and breathable film bags
Detailed Description
The method aims to overcome the defects that the moisture in the conventional lithium battery can cause the decomposition of electrolyte lithium salt after the battery is injected, gas is generated, and the gas can accelerate the deterioration of the battery performance during the formation and the capacity grading of the battery. The utility model provides a battery of ventilative film bag in area.
The battery with the breathable film bag comprises a positive electrode material 3, a negative electrode material 1, a diaphragm 2, electrolyte 5, an aluminum-plastic film 4 and the breathable film bag 6, and is mainly characterized in that the diaphragm 2 is positioned between the positive electrode material 3 and the negative electrode material 1, the electrolyte 5 is soaked in the positive electrode material 3, the negative electrode material 1 and the diaphragm 2, the positive electrode material 3 is connected with the negative electrode material 1 through the electrolyte 5, an air bag is arranged on one side of the aluminum-plastic film 4, the breathable film bag 6 is placed in the air bag on one side of the aluminum-plastic film 4, and the outer side of the aluminum-plastic film 4 comprises a PP layer.
Preferably, the material of the breathable film bag 6 comprises activated carbon, alumina ceramic particles and polytetrafluoroethylene.
Preferably, the positive electrode material 3 includes lithium cobaltate, lithium manganate, ternary lithium titanate, lithium iron phosphate, lithium vanadium phosphate, and activated carbon.
Preferably, the negative electrode material 1 includes graphite, hard carbon, activated carbon, and lithium titanate.
Preferably, the breathable film pouch 6 is fused with the PP layer of the aluminum plastic film 4 during the heat sealing process.
Preferably, the size of the air-permeable film pouch 6 is 200mm by 20 mm.
Preferably, the activated carbon in the gas permeable film bag 6 absorbs a trace amount of moisture and gases generated by formation in the battery, thereby reducing deterioration of the battery performance caused by the gases.
Preferably, the gas permeable film pouch 6 does not react with the electrolyte.
The working principle is as follows: the utility model discloses a in the gasbag of normally dashing 4 one sides of hole plastic-aluminum membrane, place ventilative film bag 6, do not influence the production preparation technology of battery, only in formation, partial volume in-process, in time absorb moisture and 5 gas that take place the reaction and produce of electrolyte through ventilative film bag 6. After the formation and the capacity grading of the battery are finished, the air bag is cut off and the breathable film bag 6 is taken out at the same time as the normal battery preparation process.
In addition, the battery core with the breathable film belt and the battery core without the breathable film bag are subjected to a circulation experiment at 25 ℃, and the experiment shows that the battery core with the breathable film belt has better circulation performance than the battery core without the breathable film bag.
TABLE 1 comparison of the cycling performance of cells with and without the breathable film strips as follows
TABLE 1
The above embodiments are only used to illustrate the technical solution of the present invention and not to limit the same, although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify or equally replace the specific embodiments of the present invention, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention is within the protection scope of the claims of the present invention.
Claims (6)
1. The utility model provides a battery of area ventilative film bag, includes cathode material, diaphragm, electrolyte, plastic-aluminum membrane, ventilative film bag, its main characterized in that: the diaphragm is located between the anode material and the cathode material, the electrolyte is soaked in the anode material, the cathode material and the diaphragm, the anode material and the cathode material are connected through the electrolyte, an air bag is arranged on one side of the aluminum-plastic film, the breathable film bag is placed in the air bag on one side of the aluminum-plastic film, and the outer side of the aluminum-plastic film comprises a PP layer.
2. A battery with a gas-permeable film pouch according to claim 1, characterized in that: the material of the breathable film bag comprises activated carbon or alumina ceramic particles or polytetrafluoroethylene.
3. A battery with a gas-permeable film pouch according to claim 1, characterized in that: the positive electrode material comprises lithium cobaltate or lithium manganate or ternary or lithium titanate or lithium iron phosphate or lithium vanadium phosphate or activated carbon.
4. A battery with a gas-permeable film pouch according to claim 1, characterized in that: the negative electrode material comprises graphite or hard carbon or activated carbon or lithium titanate.
5. A battery with a gas-permeable film pouch according to claim 1, characterized in that: the breathable film bag is fused with the PP layer of the aluminum plastic film in the heat sealing process.
6. A battery with a gas-permeable film pouch according to claim 1, characterized in that: the size of the breathable film bag is 200mm by 20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022096462.1U CN213988964U (en) | 2020-09-23 | 2020-09-23 | Battery with breathable film bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022096462.1U CN213988964U (en) | 2020-09-23 | 2020-09-23 | Battery with breathable film bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213988964U true CN213988964U (en) | 2021-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022096462.1U Active CN213988964U (en) | 2020-09-23 | 2020-09-23 | Battery with breathable film bag |
Country Status (1)
| Country | Link |
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| CN (1) | CN213988964U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024049169A1 (en) * | 2022-08-29 | 2024-03-07 | 주식회사 엘지에너지솔루션 | Pouch-type battery case, manufacturing method therefor, and secondary battery manufacturing method |
-
2020
- 2020-09-23 CN CN202022096462.1U patent/CN213988964U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024049169A1 (en) * | 2022-08-29 | 2024-03-07 | 주식회사 엘지에너지솔루션 | Pouch-type battery case, manufacturing method therefor, and secondary battery manufacturing method |
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