CN112838282A - System for negative-pressure formation of lithium battery with clean pipeline and cleaning process of system - Google Patents

System for negative-pressure formation of lithium battery with clean pipeline and cleaning process of system Download PDF

Info

Publication number
CN112838282A
CN112838282A CN202110227267.4A CN202110227267A CN112838282A CN 112838282 A CN112838282 A CN 112838282A CN 202110227267 A CN202110227267 A CN 202110227267A CN 112838282 A CN112838282 A CN 112838282A
Authority
CN
China
Prior art keywords
control valve
negative pressure
positive pressure
pressure
pipeline
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.)
Pending
Application number
CN202110227267.4A
Other languages
Chinese (zh)
Inventor
张近钢
白科
阮江明
曹国辉
游杰
黄浩
陈富源
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangxi ANC New Energy Technology Co Ltd
Original Assignee
Jiangxi ANC New Energy Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangxi ANC New Energy Technology Co Ltd filed Critical Jiangxi ANC New Energy Technology Co Ltd
Priority to CN202110227267.4A priority Critical patent/CN112838282A/en
Publication of CN112838282A publication Critical patent/CN112838282A/en
Pending legal-status Critical Current

Links

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
    • H01M10/44—Methods for charging or discharging
    • H01M10/446—Initial charging measures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00—Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
    • 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
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • 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
    • H01M10/058—Construction or manufacture
    • 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
    • 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

Landscapes

  • 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)
  • Hybrid Cells (AREA)

Abstract

The utility model provides a system for clean pipeline in lithium cell negative pressure ization area and clearance technology thereof, the system for clean pipeline in lithium cell negative pressure ization area include vacuum tank, evacuation control valve, atmospheric pressure watch, dry pressure-fired device, pressure-fired control valve, gaseous constant temperature heater, take out sap cavity, shunt tubes, negative pressure suction nozzle. The cleaning process comprises the following steps: 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 device of the invention effectively prevents the pipeline from being blocked by the negative pressure formation belt, and ensures the effectiveness of the negative pressure system.

Description

System for negative-pressure formation of lithium battery with clean pipeline and cleaning process of system
Technical Field
The invention relates to the field of new energy lithium battery core manufacturing and production, in particular to a system for cleaning a pipeline by negative pressure formation of a lithium battery and a cleaning process thereof.
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.
Disclosure of Invention
In order to solve the problems, the invention provides a system and a cleaning process for a negative-pressure banding cleaning pipeline of a lithium battery.
The technical scheme adopted by the invention is as follows:
the invention relates to a system for negative-pressure formation of a lithium battery with a clean pipeline, which comprises a dry 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, and the connection structure is 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;
further, the positive pressure device (11) provides air with relative atmospheric pressure of 150-200 kPa and humidity of 15% -25% HR;
a cleaning process for a negative-pressure formed clean pipeline of a lithium battery comprises the following process steps of:
s1, connecting a liquid injection hole of the battery cell to be formed with the negative pressure suction nozzle 10;
s2, opening the vacuumizing control valve 4, vacuumizing the battery cell, and starting the battery cell charging formation;
s3, finishing formation, closing the vacuumizing control valve 4, and opening the drying micro-positive pressure control valve 2;
s4, closing the drying micro-positive pressure control valve 2 after the battery core is vacuumized;
s5, taking out the battery cell, and starting the gas constant temperature heater 6;
s6, starting the positive pressure control valve 7, and blowing air into the pipeline by the positive pressure device 11;
s7, blowing air for 1-3 min, and closing the positive pressure control valve 7;
and S8, cleaning the bottom of the forming cabinet by using a clean cloth, and cleaning the forming belt pipeline.
The invention has the beneficial effects that: the invention provides a system for cleaning a pipeline in a negative pressure formation zone of a lithium battery, which is characterized in that liquid electrolyte residue in a negative pressure system is blown out through micro-positive pressure, and then hot air and lithium hexafluorophosphate in the pipeline are subjected to crystallization reaction to obtain a gaseous product, so that the problems of residue and crystallization of the electrolyte in the negative pressure pipeline after the battery is formed are effectively solved, the normal work of the negative pressure system is further ensured, the negative pressure value in the battery during formation is ensured, and gas generated by formation is timely pumped out.
Drawings
FIG. 1 is a schematic view of a system layout of a negative pressure lithium battery with a clean pipe;
FIG. 2 is a flow chart of a system cleaning process for negative pressure formation of a 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
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and all of the technical features or connections of the present invention that are not described in detail are prior art.
Example 1
The invention discloses a system for forming a negative pressure belt of a lithium battery into a clean pipeline, wherein a micro positive pressure control valve is arranged on a drying micro positive pressure device and is controlled by the 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.
Cleaning process:
s1, connecting a liquid injection hole of the battery cell to be formed with a negative pressure suction nozzle;
s2, opening a vacuumizing control valve, vacuumizing the battery cell, controlling the vacuum negative pressure value to be-95 kPa, and starting the charging formation of the battery cell;
s3, finishing formation, closing the vacuumizing control valve, opening the drying micro-positive pressure control valve, and controlling the micro-positive pressure value to be 10 kPa;
s4, closing the drying micro-positive pressure control valve after the battery cell is vacuumized;
s5, taking out the tray on the formation cabinet, starting the gas constant temperature heater, setting the constant temperature at 50 ℃, simultaneously starting a positive pressure control valve, wherein the positive pressure device is an air device for providing 170 +/-20 kPa relative atmospheric pressure and 15% -25% HR humidity;
s6, starting a positive pressure control valve, and blowing air into the pipeline by a positive pressure device;
s7, blowing air for 3min, and closing the positive pressure control valve;
and S8, cleaning the bottom of the forming cabinet by using a clean cloth, and cleaning the forming belt pipeline.
Example 2
The same system as in example 1 was used, and the cleaning process was as follows:
s1, connecting a liquid injection hole of the battery cell to be formed with a negative pressure suction nozzle;
s2, opening a vacuumizing control valve, vacuumizing the battery cell, controlling the vacuum negative pressure value to be-100 kPa, and starting the battery cell charging formation;
s3, finishing formation, closing the vacuumizing control valve, opening the drying micro-positive pressure control valve, and controlling the micro-positive pressure value to be 5 kPa;
s4, closing the drying micro-positive pressure control valve after the battery cell is vacuumized;
s5, taking out the tray on the formation cabinet, starting the gas constant temperature heater, setting the constant temperature at 60 ℃, simultaneously starting a positive pressure control valve, wherein the positive pressure device is an air device which provides 180 +/-20 kPa relative atmospheric pressure and 15% -25% HR humidity;
s6, starting a positive pressure control valve, and blowing air into the pipeline by a positive pressure device;
s7, blowing for 1min, and closing the positive pressure control valve;
and S8, cleaning the bottom of the forming cabinet by using a clean cloth, and cleaning the forming belt pipeline.
Example 3
The same system as in example 1 was used, and the cleaning process was as follows:
s1, connecting a liquid injection hole of the battery cell to be formed with a negative pressure suction nozzle;
s2, opening a vacuumizing control valve, vacuumizing the battery cell, controlling the vacuum negative pressure value to be-98 kPa, and starting the charging formation of the battery cell;
s3, finishing formation, closing the vacuumizing control valve, opening the drying micro-positive pressure control valve, and controlling the micro-positive pressure value to be 5 kPa;
s4, closing the drying micro-positive pressure control valve after the battery cell is vacuumized;
s5, taking out the tray on the formation cabinet, starting the gas constant temperature heater, setting the constant temperature at 55 ℃, simultaneously starting a positive pressure control valve, wherein the positive pressure device is an air device which provides 180 +/-20 kPa relative atmospheric pressure and 15% -25% HR humidity;
s6, starting a positive pressure control valve, and blowing air into the pipeline by a positive pressure device;
s7, blowing for 2min, and closing the positive pressure control valve;
and S8, cleaning the bottom of the forming cabinet by using a clean cloth, and cleaning the forming belt pipeline.
After 5 months of continuous production in the embodiments 1, 2 and 3, the pipeline channel of the system is not blocked and crystallized, and the method provided by the invention is adopted to obviously improve the formation pipeline blockage caused by the crystallization formed in the formation pipeline by the electrolyte; 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 embodiments are merely preferred embodiments of the present invention, and any simple modification, modification and substitution changes made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims (9)

1. A system for cleaning pipelines in a lithium battery negative pressure zone 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 flow dividing pipe (9), a negative pressure suction nozzle (10), a positive pressure device (11) and a flow divider (12), wherein the drying micro-positive pressure device (1) is provided with the micro-positive pressure control valve (2), the vacuum tank (3) is provided with 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 the air pressure monitoring meter (5) through one end of the flow divider (12) after being connected through a pipeline, and the other end of the flow divider (12) is provided with, wherein passageway one with positive pressure control valve (7) are connected, positive pressure control valve (7) with gaseous constant temperature heating ware (6) are connected, gaseous constant temperature heating ware (6) are connected malleation device (11), shunt (12) passageway two and passageway three are connected two the same respectively draw sap cavity (8), draw sap cavity (8) 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.
9. The utility model provides a cleaning technology of clean pipeline in lithium cell negetive pressure banding which characterized in that: the negative pressure lithium battery system with the clean pipeline as in claims 1 to 8, wherein the process steps for cleaning the pipeline are as follows:
s1, connecting a liquid injection hole of a to-be-formed battery core with the negative pressure suction nozzle (10);
s2, opening the vacuumizing control valve (4), vacuumizing the battery cell, and starting battery cell charging formation;
s3, after the formation is finished, closing the vacuumizing control valve (4) and opening the drying micro-positive pressure control valve (2);
s4, closing the drying micro-positive pressure control valve (2) after the vacuum of the battery cell is broken;
s5, taking out the battery cell, and starting the gas constant temperature heater (6);
s6, opening the positive pressure control valve (7), and blowing air into the system by the positive pressure device (11);
s7, blowing air for 1-3 min, and closing the positive pressure control valve (7);
and S8, cleaning the bottom of the forming cabinet by using a clean cloth, and finishing cleaning of the forming belt pipeline.
CN202110227267.4A 2021-03-01 2021-03-01 System for negative-pressure formation of lithium battery with clean pipeline and cleaning process of system Pending CN112838282A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110227267.4A CN112838282A (en) 2021-03-01 2021-03-01 System for negative-pressure formation of lithium battery with clean pipeline and cleaning process of system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110227267.4A CN112838282A (en) 2021-03-01 2021-03-01 System for negative-pressure formation of lithium battery with clean pipeline and cleaning process of system

Publications (1)

Publication Number Publication Date
CN112838282A true CN112838282A (en) 2021-05-25

Family

ID=75934342

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110227267.4A Pending CN112838282A (en) 2021-03-01 2021-03-01 System for negative-pressure formation of lithium battery with clean pipeline and cleaning process of system

Country Status (1)

Country Link
CN (1) CN112838282A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116906608A (en) * 2023-09-06 2023-10-20 深圳市瑞能实业股份有限公司 Battery formation negative pressure control box and battery formation negative pressure system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116906608A (en) * 2023-09-06 2023-10-20 深圳市瑞能实业股份有限公司 Battery formation negative pressure control box and battery formation negative pressure system
CN116906608B (en) * 2023-09-06 2023-12-12 深圳市瑞能实业股份有限公司 Battery formation negative pressure control box and battery formation negative pressure system

Similar Documents

Publication Publication Date Title
CN104037437B (en) A kind of vacuum heat-preserving fuel cell system
CN112838282A (en) System for negative-pressure formation of lithium battery with clean pipeline and cleaning process of system
CN205525962U (en) Heating of PVB resin keeps warm and saves jar
CN214411302U (en) System for lithium cell negative pressure ization area clean pipeline
CN106756884A (en) A kind of PECVD coating apparatus
CN218321630U (en) Gas path transmission system
CN201804848U (en) Oxidation unit used for manufacturing semiconductor device
CN202380085U (en) Gas purge system in LPCVD (low-pressure chemical vapor deposition) process chambers
CN210154337U (en) Sealing kiln discharging machine
CN105252695A (en) Foam plastic forming machine with negative pressure drainage system
CN205185189U (en) Take foamed plastic forming machine of negative pressure drainage system
CN211233990U (en) Waste heat recovery device of high-temperature roasting furnace
CN109778145B (en) CVD equipment gas supply device for producing solar cell and gas supply method thereof
CN201770773U (en) Gas distributing device for film coating of large-size substrate
CN217640035U (en) High-temperature groove body for semiconductor manufacturing process
CN206689217U (en) A kind of wire drawing die with refrigerating function
CN206134817U (en) Hold battery tab cast joint machine mould water, compressed air mixed cooling device
CN220658614U (en) Annotate liquid machine and arrange raffinate pipeline automatically cleaning structure
CN104776704A (en) Concurrent flow tower type grain drier
CN204151065U (en) Discharge chamber structure in ozonizer
CN210172161U (en) Waste discharge device of solar cell curing equipment
CN204438776U (en) A kind of anode material of lithium battery pre-burning stove
CN104192808A (en) Discharge chamber structure in ozonator
CN204555601U (en) A kind of following current tower-type grain drier
CN217303373U (en) Industrial oven

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination