CN214411302U - System for lithium cell negative pressure ization area clean pipeline - Google Patents
System for lithium cell negative pressure ization area clean pipeline Download PDFInfo
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- CN214411302U CN214411302U CN202120441510.8U CN202120441510U CN214411302U CN 214411302 U CN214411302 U CN 214411302U CN 202120441510 U CN202120441510 U CN 202120441510U CN 214411302 U CN214411302 U CN 214411302U
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- negative pressure
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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 system for clean pipeline in lithium cell negative pressure ization area, the system for clean pipeline in lithium cell negative pressure ization area include vacuum tank, evacuation control valve, atmospheric pressure control table, dry pressure-fired device, positive pressure control valve, gaseous constant temperature heater, take out sap cavity, shunt tubes, negative pressure suction nozzle. After the negative pressure becomes electric core, the vacuum pumping control valve is closed, and little positive pressure valve is opened and is broken the vacuum, treats that electric core tray takes out the back, and malleation device, positive pressure control valve, gaseous constant temperature heating ware begin work, to drawing liquid chamber, shunt tubes, negative pressure suction nozzle and passing through the shunt and blowing hot-air, blow off the electrolyte in the system, decompose the interior lithium hexafluorophosphate crystallization of pipeline simultaneously. The utility model discloses the device prevents effectively that the negative pressure from becoming to take the pipeline jam, ensures the validity of negative pressure system.
Description
Technical Field
The utility model relates to a new forms of energy lithium cell manufacturing production field especially relates to a system of clean pipeline in lithium cell negative pressure formation area.
Background
In square aluminum hull power lithium cell production process, the formation process is not smooth and is an important reason that causes lithium cell capacity, cycle life poor, finds through research: the battery generates a large amount of gas due to internal reaction in the formation and charging process, and serious lithium precipitation and black spot phenomena can be caused on the battery interface if the gas is not completely discharged. The negative pressure pumping mode is usually adopted to discharge the gas generated in the battery charging process; however, electrolyte is pumped out along with gas to enter the negative pressure pipeline in the process of negative pressure pumping and exhausting, and the electrolyte is accumulated in the negative pressure pipeline for a long time to generate crystallization, so that the negative pressure pipeline is blocked to influence the vacuum pumping effect.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a clean pipeline's of lithium cell negative pressure ization area system and clearance technology, the utility model discloses earlier blow off the liquid electrolyte in the negative pressure system through the pressure-fired pressure and remain, rethread hot air and pipeline in lithium hexafluorophosphate crystallization reaction get the gaseous state result, solved effectively that the battery becomes back electrolyte and remain in the negative pressure pipeline with the crystallization condition, and then improve the normal work of negative pressure system.
The utility model adopts the following technical scheme:
the utility model discloses a lithium cell negative pressure becomes system of taking clean pipeline, including dry pressure-fired device 1, little positive pressure control valve 2, vacuum tank 3, evacuation control valve 4, air pressure monitoring table 5, gaseous constant temperature heating ware 6, positive pressure control valve 7, drawing liquid chamber 8, shunt tubes 9, negative pressure suction nozzle 10, positive pressure device 11, shunt 12, its connection structure as follows: dry pressure-fired device 1 sets up little positive pressure control valve 2, vacuum tank 3 sets up evacuation control valve 4, and evacuation control valve 4 passes through the pipeline and is connected with atmospheric pressure control table 5, dry pressure-fired device 1 passes through the pipe connection with atmospheric pressure control table 5 after and is connected with the one end of shunt 12, shunt 12 sets up three passageway, passageway one is connected with positive pressure control valve 7, positive pressure control valve 7 is connected with gaseous constant temperature heater 6, gaseous constant temperature heater 6 connects malleation device 11, shunt 12 passageway two is connected two the same drawing liquid chambeies 8 with the passageway three respectively, drawing liquid chamber 8 passes through shunt tubes 9 and links to each other with negative pressure suction nozzle 10.
Further, the drying micro-positive pressure device 1 provides drying air with relative atmospheric pressure of 0-30 kPa;
further, the volume of the vacuum tank 3 is 10-15 m3The negative pressure value is-100 to-95 kPa relative to the atmospheric pressure;
further, the micro positive pressure control valve 2, the vacuumizing control valve 4 and the positive pressure control valve 7 are all one-way gas transmission control valves;
further, the air pressure monitoring meter 5 is a positive and negative pressure test meter;
further, the gas temperature of the gas constant temperature heater 6 is 50-60 ℃;
further, the negative pressure suction nozzle 10 is a detachable device, and the number of the negative pressure suction nozzles can be adjusted according to the number of the battery cores to be formed;
furthermore, the positive pressure device (11) provides air with relative atmospheric pressure of 150-200 kPa and humidity of 15% -25% HR.
The utility model has the advantages that: the utility model provides a system for clean pipeline of lithium cell subpressure ization banding, the utility model discloses earlier blow off the liquid electrolyte in the negative pressure system through the pressure-fired pressure and remain, rethread hot air and pipeline in the lithium hexafluorophosphate crystallization reaction get the gaseous state result, effectual solved the battery become back electrolyte remain in the negative pressure pipeline with the crystallization condition, and then guarantee the normal work of negative pressure system, the inside negative pressure value of battery when ensureing to become, make to become the gas that produces in time take out.
Drawings
FIG. 1 is a schematic view of a system layout of a negative pressure lithium battery with a clean pipe;
wherein, 1, drying a micro-positive pressure device; 2. a micro positive pressure control valve; 3. a vacuum tank; 4. a vacuum pumping control valve; 5. an air pressure monitoring meter; 6. a gas constant temperature heater; 7. a positive pressure control valve; 8. a liquid pumping cavity; 9. a shunt tube; 10. a negative pressure suction nozzle; 11. a positive pressure device; 12 a flow divider.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings, and all the parts of the present invention not described in detail are the prior art adopted.
Example 1
The utility model discloses a system for negative pressure formation of a lithium battery with a clean pipeline.A micro-positive pressure control valve is arranged on a drying micro-positive pressure device and is controlled by the drying micro-positive pressure control valve; set up the evacuation control valve at the vacuum tank to by its control, the evacuation control valve passes through the pipeline and is connected with the atmospheric pressure control table, dry pressure-fired device passes through the pipe connection back with the atmospheric pressure control table and is connected with the one end of shunt, the shunt sets up three passageway, passageway one is connected with positive pressure control valve, positive pressure control valve and gaseous constant temperature heater connection, gaseous constant temperature heater connection positive pressure device, shunt passageway two is connected two the same liquid chambers of taking out respectively with the passageway three, it passes through the shunt tubes and links to each other with the negative pressure suction nozzle to take out the liquid chamber.
And connecting a liquid injection hole of the cell to be formed with a negative pressure suction nozzle, opening a vacuumizing control valve, vacuumizing the cell, controlling the vacuum negative pressure value to be-95 kPa, and starting the cell charging formation. And (5) after the formation is finished, closing the vacuumizing control valve, and opening the drying micro-positive pressure control valve to control the micro-positive pressure value to be 10 kPa. And after the electric core is subjected to vacuum breaking, closing the dry micro-positive pressure control valve, taking out the tray on the formation cabinet, starting the gas constant temperature heater, setting the constant temperature at 50 ℃, simultaneously starting the positive pressure control valve, wherein the positive pressure device is an air device for providing relative atmospheric pressure of 170 +/-20 kPa and humidity of 15% -25% HR. And opening the positive pressure control valve, and blowing the pipeline by the positive pressure device. Blowing air for 3min, closing the positive pressure control valve, cleaning the bottom of the forming cabinet with clean cloth, and cleaning the forming belt pipeline.
The system is observed after running for 5 months, the blockage and crystallization conditions do not appear in the pipeline channel of the system, and the method provided by the utility model is adopted to obviously improve the formation crystallization of the electrolyte in the formation pipeline and finally the blockage of the formation pipeline; the problem that electrolyte is remained and crystallized in the negative pressure pipeline after the battery is formed is effectively solved, normal work of a negative pressure system is further guaranteed, the negative pressure value inside the battery during formation is guaranteed, and gas generated during formation is timely pumped out.
The above-mentioned embodiment is only the preferred embodiment of the present invention, all the basis the utility model discloses a technical entity all belongs to the utility model discloses any simple modification, modification and substitution change to what the above embodiment was done the within range of technical scheme.
Claims (8)
1. The utility model provides a system for clean pipeline in lithium cell negetive pressure banding which characterized in that: comprises a drying micro-positive pressure device (1), a micro-positive pressure control valve (2), a vacuum tank (3), a vacuumizing control valve (4), an air pressure monitoring meter (5), a gas constant temperature heater (6), a positive pressure control valve (7), a liquid pumping cavity (8), a shunt pipe (9), a negative pressure suction nozzle (10), a positive pressure device (11) and a shunt (12), wherein the drying micro-positive pressure device (1) is arranged on the micro-positive pressure control valve (2), the vacuum tank (3) is arranged on the vacuumizing control valve (4), the vacuumizing control valve (4) is connected with the air pressure monitoring meter (5) through a pipeline, the drying micro-positive pressure device (1) is connected with one end of the shunt (12) through the pipeline after the air pressure monitoring meter (5) is connected with the air pressure monitoring meter (5), the other end of the shunt (12) is provided with three channels, wherein a channel I is connected with the positive pressure control valve (7), positive pressure control valve (7) with gaseous constant temperature heating ware (6) are connected, gaseous constant temperature heating ware (6) are connected positive pressure device (11), shunt (12) passageway two and passageway three are connected two the same respectively draw sap cavity (8), draw sap cavity (8) to pass through shunt tubes (9) with negative pressure suction nozzle (10) link to each other.
2. The system of claim 1 for negative pressure forming of lithium batteries with clean plumbing, characterized by: the drying micro-positive pressure device (1) provides drying air with relative atmospheric pressure of 0-30 kPa.
3. The system of claim 1 for negative pressure forming of lithium batteries with clean plumbing, characterized by: the volume of the vacuum tank (3) is 10-15 m3The negative pressure value is-100 to-95 kPa relative to the atmospheric pressure.
4. The system of claim 1 for negative pressure forming of lithium batteries with clean plumbing, characterized by: the micro positive pressure control valve (2), the vacuumizing control valve (4) and the positive pressure control valve (7) are all one-way gas transmission control valves.
5. The system of claim 1 for negative pressure forming of lithium batteries with clean plumbing, characterized by: the air pressure monitoring meter (5) is a positive and negative pressure test meter.
6. The system of claim 1 for negative pressure forming of lithium batteries with clean plumbing, characterized by: the gas temperature of the gas constant temperature heater (6) is 50-60 ℃.
7. The system of claim 1 for negative pressure forming of lithium batteries with clean plumbing, characterized by: the negative pressure suction nozzle (10) is a detachable device, and the number of the negative pressure suction nozzles can be increased or decreased according to the number of the electric cores to be formed.
8. The system of claim 1 for negative pressure forming of lithium batteries with clean plumbing, characterized by: the positive pressure device (11) provides air with relative atmospheric pressure of 150-200 kPa and humidity of 15% -25% HR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120441510.8U CN214411302U (en) | 2021-03-01 | 2021-03-01 | System for lithium cell negative pressure ization area clean pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120441510.8U CN214411302U (en) | 2021-03-01 | 2021-03-01 | System for lithium cell negative pressure ization area clean pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214411302U true CN214411302U (en) | 2021-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120441510.8U Active CN214411302U (en) | 2021-03-01 | 2021-03-01 | System for lithium cell negative pressure ization area clean pipeline |
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| Country | Link |
|---|---|
| CN (1) | CN214411302U (en) |
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2021
- 2021-03-01 CN CN202120441510.8U patent/CN214411302U/en active Active
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