CN110676532B - New energy lithium battery flatulence repairing method - Google Patents
New energy lithium battery flatulence repairing method Download PDFInfo
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- CN110676532B CN110676532B CN201910764893.XA CN201910764893A CN110676532B CN 110676532 B CN110676532 B CN 110676532B CN 201910764893 A CN201910764893 A CN 201910764893A CN 110676532 B CN110676532 B CN 110676532B
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- China
- Prior art keywords
- lithium battery
- injection port
- liquid injection
- steel ball
- flatulence
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 33
- 206010016766 flatulence Diseases 0.000 title claims abstract description 22
- 238000002347 injection Methods 0.000 claims abstract description 60
- 239000007924 injection Substances 0.000 claims abstract description 60
- 239000007788 liquid Substances 0.000 claims abstract description 55
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 239000007789 gas Substances 0.000 claims abstract description 23
- 239000000565 sealant Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000011261 inert gas Substances 0.000 claims abstract description 7
- 238000001125 extrusion Methods 0.000 claims description 12
- 239000003921 oil Substances 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000008961 swelling Effects 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 5
- 239000011324 bead Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/52—Removing gases inside the secondary cell, e.g. by absorption
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Abstract
A new energy lithium battery inflation repairing method can solve the technical problems that after battery inflation, the internal structure is damaged, so that the battery function is scrapped and safety risks exist. The method comprises the following steps: s100, removing sealant at a liquid injection port of the flatulence lithium battery, and exposing a small steel ball at the liquid injection port; s200, removing small steel balls at a liquid injection port of the flatulence lithium battery; s300, injecting inert gas into the inflation lithium battery liquid injection port; s400, exhausting the air expanded lithium battery by adopting cylinder control; and S500, sealing the lithium battery liquid injection port. The air inflation repairing method for the new energy lithium battery can recover gas generated in the lithium battery, so that the lithium battery after air inflation can be continuously used, more complete use service is brought for market echelon utilization of lithium battery, and more energy-saving and efficient utilization is brought.
Description
Technical Field
The invention relates to the technical field of new energy lithium batteries, in particular to a method for repairing new energy lithium batteries by means of flatulence.
Background
It is common that gases are generated in the lithium battery during the production process, and after the lithium battery is assembled, a small amount of gases are generated in the pre-formation process, and the gases are inevitable and are a source of irreversible capacity loss of the battery cell. In the first charge and discharge process, electrons reach the cathode from an external circuit and then undergo redox reaction with electrolyte on the surface of the cathode to generate gas. In the process, SEI is formed on the surface of the graphite negative electrode, and along with the increase of the thickness of the SEI, electrons cannot penetrate through the SEI to inhibit the continuous oxidative decomposition of the electrolyte, so that gas, namely the flatulence lithium battery is generated in the lithium battery.
The continuous use of the flatulence lithium battery can cause serious swelling inside the battery, damage the internal structure, short circuit reaction and the like, and more serious people can be spontaneously combusted or directly exploded. Therefore, the gas existing in the gas-expanded lithium battery cannot be used continuously.
Disclosure of Invention
The invention provides a new energy lithium battery inflation repairing method which can solve the technical problems of battery function scrap and safety risk caused by damage of an internal structure after battery inflation.
In order to achieve the purpose, the invention adopts the following technical scheme:
a new energy lithium battery flatulence restoration method comprises the following steps:
s100, removing sealant at a liquid injection port of the flatulence lithium battery, and exposing a small steel ball at the liquid injection port;
s200, removing small steel balls at a liquid injection port of the flatulence lithium battery;
s300, injecting inert gas into the inflation lithium battery liquid injection port;
s400, exhausting the air expanded lithium battery by adopting cylinder control;
and S500, sealing the lithium battery liquid injection port.
Further, step S500 is to close the lithium battery liquid injection port;
the method specifically comprises the following steps:
s501: sealing the liquid injection port by using a steel ball;
s502: and sealing the liquid injection port by using a sealant.
Further, in the step S200, small steel balls at the liquid injection port of the flatulence lithium battery are removed; the method specifically comprises the following steps:
the lithium battery without sealant is stably and vertically fixed on a table top, the welding pole of a bipolar point pulse spot welding machine is aligned to the small steel ball of the liquid injection port, the other pole of the bipolar point pulse spot welding machine is in contact with the edge of the battery, a pulser switch is stepped on, the pole dust and the small steel ball are welded together rapidly at the moment, and then the small steel ball is pulled out rapidly by synchronously adopting a lever type.
Further, in the step S400, the air cylinder is adopted to control the air exhaust of the air-inflated lithium battery; the method specifically comprises the following steps:
the lithium battery is stably and vertically placed into a pneumatic clamp, a corresponding stamping stroke is set on a pneumatic valve controller, a switch P4 pneumatic injection oil cylinder is started to push hydraulic oil to enter a power oil cylinder for P1 gas output, a cylinder push plate pushes a lithium battery subjected to extrusion expansion in the first stage, the pressure required by splicing extrusion is large, the lithium battery subjected to extrusion expansion automatically enters a high-pressure stroke P3 when a low-pressure stroke is used up and is injected into a P2 gas output cylinder pressure pile to be stamped into the power oil cylinder, the cylinder push plate pushes the lithium battery subjected to extrusion expansion to be extruded back to the original shape, gas is rapidly discharged from a liquid injection port, and the battery is recovered to the original shape.
Further, the step S501: sealing the liquid injection port by using a steel ball; the method specifically comprises the following steps: a negative pressure ball sucker is used for sucking a small steel ball corresponding to the size of the liquid injection port to the liquid injection port, and a small iron hammer is used for pounding the upper liquid injection port.
Further, in the step S502, the liquid injection port is sealed by using a sealant; the method specifically comprises the following steps:
and (3) aiming at the liquid injection port, extruding the special sealant for the lithium battery to completely seal the gap around the small steel ball, and then irradiating for 5 minutes by using an ultraviolet lamp to quickly solidify the glue.
Further, the inert gas in step S300 is specifically argon.
According to the technical scheme, the air inflation repairing method for the new energy lithium battery can recover gas generated in the lithium battery, so that the air inflated lithium battery can be continuously used, the service is more perfect for market echelon utilization after lithium battery lithium charging, and more energy-saving and efficient utilization is achieved.
Drawings
FIG. 1 is a schematic flow diagram of the process of the present invention;
FIG. 2 is a side sectional view of a lithium battery;
FIG. 3 is a schematic view showing the flow of opening the injection port by moving the beads according to the present invention;
FIG. 4 is a schematic diagram of a cylinder clamp venting flow according to the present invention;
FIG. 5 is a schematic view of the overall process flow of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
As shown in fig. 1, the method for repairing flatulence in a new energy lithium battery according to this embodiment includes the following steps:
s100, removing sealant at a liquid injection port of the flatulence lithium battery, and exposing a small steel ball at the liquid injection port;
s200, removing small steel balls at a liquid injection port of the flatulence lithium battery;
s300, injecting inert gas into the inflation lithium battery liquid injection port;
s400, exhausting the air expanded lithium battery by adopting cylinder control;
and S500, sealing the lithium battery liquid injection port.
The following is described in detail with reference to fig. 2 to 5:
the method specifically comprises the following steps:
as shown in fig. 2;
firstly, removing the photoresist: and placing the battery on a small bench drill, and slightly removing the sealant at the liquid injection port on the surface layer to expose the small steel ball.
Secondly, opening a liquid injection port by shifting beads:
as shown in figure 3, the lithium battery without sealant is stably and vertically fixed on a table top, the welding pole of a double-pole pulse spot welding machine is aligned to a small steel ball of a liquid injection port, the other pole of the double-pole pulse spot welding machine is in contact with the edge of the battery, a pulser switch is stepped on, the pole dust and the small steel ball are welded together rapidly at the moment, and then the small steel ball is pulled out rapidly by synchronously adopting a lever type.
And thirdly, injecting a small amount of inert filling gas to form a virtual position, so that the gas in the lithium battery quickly floats upwards. The inert gas is in particular argon.
Fourthly, exhausting the cylinder clamp:
as shown in figure 4, the lithium battery is stably and vertically placed into the pneumatic clamp, a corresponding stamping stroke is set on a pneumatic valve controller, a switch P4 pneumatic injection oil cylinder is started to push hydraulic oil to enter a power oil cylinder for outputting P1 gas, a cylinder push plate pushes the lithium battery subjected to extrusion and expansion in the first stage, due to the fact that the pressure required by splicing and extrusion is large, the lithium battery subjected to extrusion and expansion automatically enters a high-pressure stroke P3 pneumatic injection P2 gas output cylinder for stamping into the power oil cylinder after the low-pressure stroke is used up, the cylinder push plate pushes the lithium battery subjected to extrusion and expansion to be extruded back to the original shape, the gas is rapidly discharged from a liquid injection port, and the battery is recovered to.
Fifthly, sealing the liquid injection port by steel balls:
a negative pressure ball sucker is used for sucking a small steel ball corresponding to the size of the liquid injection port to the liquid injection port, and a small iron hammer is used for pounding the upper liquid injection port. And starting a return switch of the pneumatic valve, injecting P3 gas into P2 gas for output, connecting with a second return P1 gas for injecting P4 gas for output, and releasing the cylinder push plate.
Sixthly, applying a sealant: and (3) aiming at the liquid injection port, extruding the special sealant for the lithium battery to completely seal the gap around the small steel ball, and then irradiating for 5 minutes by using an ultraviolet lamp to quickly solidify the glue.
As shown in fig. 5, to sum up: the method for repairing the flatulence of the new energy lithium battery is based on the flatulence lithium battery, the liquid injection port of the battery is opened, the flatulence in the lithium battery is extruded by the air cylinder clamp, then the liquid injection port of the battery is sealed, and finally the clamp is removed, so that the lithium battery is restored to the original shape.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. A new energy lithium battery flatulence restoration method is based on a flatulence lithium battery and is characterized in that: the method comprises the following steps:
s100, removing sealant at a liquid injection port of the flatulence lithium battery, and exposing a small steel ball at the liquid injection port;
s200, removing small steel balls at a liquid injection port of the flatulence lithium battery;
s300, injecting inert gas into the inflation lithium battery liquid injection port;
s400, exhausting the air expanded lithium battery by adopting cylinder control;
s500, sealing a liquid injection port of the lithium battery;
wherein,
s200, removing small steel balls at a liquid injection port of the flatulence lithium battery; the method specifically comprises the following steps:
the lithium battery without the sealant is vertically fixed on a desktop, a welding pole of a double-pole pulse spot welding machine is aligned to a small steel ball of a liquid injection port, the other pole of the double-pole pulse spot welding machine is contacted with the edge of the battery, a pulser switch is stepped on, the pole and the small steel ball are welded together at the moment, and then the small steel ball is pulled out synchronously by adopting a lever type;
s400, exhausting the air expanded lithium battery by adopting air cylinder control; the method specifically comprises the following steps:
the lithium battery is stably and vertically placed into a pneumatic clamp, a corresponding stamping stroke is set on a pneumatic valve controller, a switch P4 pneumatic injection oil cylinder is started to push hydraulic oil to enter a power oil cylinder for P1 gas output, a cylinder push plate pushes a lithium battery subjected to extrusion expansion in the first stage, the lithium battery subjected to extrusion expansion automatically enters a high-pressure stroke P3 when a low-pressure stroke is used up due to the fact that pressure required by splicing extrusion is large, a P2 gas output cylinder pressure pile is injected into the power oil cylinder, the cylinder push plate pushes the lithium battery subjected to extrusion expansion to extrude to return to the original shape, gas is discharged from a liquid injection port, and the battery returns to the original shape.
2. The method for repairing swelling of a new energy lithium battery as claimed in claim 1, wherein: step S500, sealing a lithium battery liquid injection port;
the method specifically comprises the following steps:
s501: sealing the liquid injection port by using a steel ball;
s502: and sealing the liquid injection port by using a sealant.
3. The method for repairing swelling of a new energy lithium battery as claimed in claim 2, wherein:
the step S501: sealing the liquid injection port by using a steel ball; the method specifically comprises the following steps:
a negative pressure ball sucker is used for sucking a small steel ball corresponding to the size of the liquid injection port to the liquid injection port, and a small iron hammer is used for pounding the upper liquid injection port.
4. The method for repairing swelling of a new energy lithium battery as claimed in claim 2, wherein: s502, sealing the liquid injection port by using sealant; the method specifically comprises the following steps:
and (3) aligning to the liquid injection port, extruding the special sealant for the lithium battery to completely seal the gap around the small steel ball, and irradiating for 5 minutes by using an ultraviolet lamp to solidify the glue.
5. The method for repairing swelling of a new energy lithium battery as claimed in claim 1, wherein: the inert gas in step S300 is specifically argon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910764893.XA CN110676532B (en) | 2019-08-19 | 2019-08-19 | New energy lithium battery flatulence repairing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910764893.XA CN110676532B (en) | 2019-08-19 | 2019-08-19 | New energy lithium battery flatulence repairing method |
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| CN110676532A CN110676532A (en) | 2020-01-10 |
| CN110676532B true CN110676532B (en) | 2021-05-28 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5358194B2 (en) * | 2009-01-09 | 2013-12-04 | Ｆｄｋエナジー株式会社 | Cylindrical battery |
| CN103390776B (en) * | 2012-05-08 | 2016-04-20 | 浙江南博电源科技有限公司 | A kind of flatulence aluminum hull electrokinetic cell restorative procedure |
| CN203521489U (en) * | 2013-11-11 | 2014-04-02 | 湖北允升科技工业园有限公司 | Aluminum-cased lithium ion battery |
| CN206003920U (en) * | 2016-08-24 | 2017-03-08 | 惠州市元大电子科技有限公司 | The pneumatic seal clamp of aluminum-shell lithium battery |
| CN207398256U (en) * | 2017-08-07 | 2018-05-22 | 力神（青岛）新能源有限公司 | A kind of lithium ion battery liquid injection mouth sealing device |
| CN207441849U (en) * | 2017-10-26 | 2018-06-01 | 合肥国轩高科动力能源有限公司 | Lithium ion battery annotates liquid hole |
| CN108461821A (en) * | 2018-02-24 | 2018-08-28 | 中山市众旺德新能源科技有限公司 | A kind of pressure formation fixture |
| CN209217133U (en) * | 2018-11-16 | 2019-08-06 | 南京金龙特种汽车有限公司 | A kind of pneumatic seal clamp of novel aluminum case lithium battery |
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Effective date of registration: 20220117 Address after: 230000 factory building on the 1st floor, building 36, Zone E, Xinzhan Industrial Park, logistics branch road, Xinzhan District, Hefei City, Anhui Province Patentee after: Anhui xunying renewable resources utilization Co.,Ltd. Address before: 230000 Workshops of Group A E in Xinzhan Industrial Park, Hefei City, Anhui Province Patentee before: ANHUI XUNYING NEW ENERGY TECHNOLOGY CO.,LTD. |
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