CN114759165A - Processing method for positive and negative pole pieces of lithium battery - Google Patents
Processing method for positive and negative pole pieces of lithium battery Download PDFInfo
- Publication number
- CN114759165A CN114759165A CN202210294282.5A CN202210294282A CN114759165A CN 114759165 A CN114759165 A CN 114759165A CN 202210294282 A CN202210294282 A CN 202210294282A CN 114759165 A CN114759165 A CN 114759165A
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- Prior art keywords
- lifting seat
- pole piece
- frame plate
- cutting
- lithium battery
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 22
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000003672 processing method Methods 0.000 title claims abstract description 18
- 238000005520 cutting process Methods 0.000 claims abstract description 42
- 238000004080 punching Methods 0.000 claims abstract description 28
- 239000002904 solvent Substances 0.000 claims abstract description 12
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 239000006258 conductive agent Substances 0.000 claims abstract description 8
- 239000007772 electrode material Substances 0.000 claims abstract description 8
- 239000002002 slurry Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000001035 drying Methods 0.000 claims abstract description 4
- 239000011267 electrode slurry Substances 0.000 claims abstract description 4
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241000252254 Catostomidae Species 0.000 description 1
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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-
- 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1395—Processes of manufacture of electrodes based on metals, Si or alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/01—Means for holding or positioning work
- B26D7/015—Means for holding or positioning work for sheet material or piles of sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/18—Means for removing cut-out material or waste
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/18—Means for removing cut-out material or waste
- B26D7/1845—Means for removing cut-out material or waste by non mechanical means
- B26D7/1863—Means for removing cut-out material or waste by non mechanical means by suction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/134—Electrodes based on metals, Si or alloys
-
- 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)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
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- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to a processing method for positive and negative pole pieces of a lithium battery, which comprises the following raw materials in parts by mass: 80-100 parts of electrode active material, 60-80 parts of solvent, 5-10 parts of binder and 1-4 parts of conductive agent; preparing electrode slurry, namely mixing an electrode active material, a solvent, a binder and a conductive agent together, fully stirring and dispersing to form slurry, coating, uniformly coating the slurry prepared in the first step on a current collector, drying the solvent, punching a pole piece, and punching the pole piece manufactured in the second step into a specified size and shape by a punching device; when carrying out the pressure through the pressure and cutting the device and cutting, when the mould lasts pushing down on the pressure is cut, the first spring of activity deckle board compression in the inner chamber of fixed deckle board, presses the activity deckle board on the pole piece top side through the effect of first spring, carries on spacingly to the pole piece of pressure in-process of cutting, avoids the off tracking of pressure in-process pole piece, guarantees the accuracy nature of pressure and cutting.
Description
Technical Field
The invention relates to the technical field of lithium battery processing, in particular to a processing method for positive and negative electrode plates of a lithium battery.
Background
A lithium battery is a battery using a nonaqueous electrolyte solution and lithium metal or a lithium alloy as a negative electrode material, and therefore such a battery is also called a lithium metal battery.
In the processing process of the positive and negative electrodes of the lithium battery, the positive and negative electrodes are punched into different shapes by a punching device, and the pole piece in punching cannot be limited by the existing punching device when in use, so that the pole piece is easy to deviate when in punching; and after punching, automatic discharging can not be achieved, manual assistance is needed, and the automation degree is low.
Disclosure of Invention
The invention provides a processing method for positive and negative pole pieces of a lithium battery, which solves the problems that the positive and negative poles of the lithium battery are punched into different shapes by a punching device in the processing process, the pole pieces in punching cannot be limited by the existing punching device when in use, and the pole pieces are easy to deviate when in punching; and after punching, the automatic discharging can not be realized, manual assistance is needed, and the automation degree is low.
In order to achieve the purpose, the invention adopts the following technical scheme:
a processing method for positive and negative electrode plates of a lithium battery comprises the following raw materials in parts by mass:
80-100 parts of electrode active material, 60-80 parts of solvent, 5-10 parts of binder and 1-4 parts of conductive agent;
the processing method comprises the following specific operations:
the method comprises the following steps: preparing electrode slurry, namely mixing an electrode active material, a solvent, a binder and a conductive agent together, and fully stirring and dispersing to form slurry;
step two: coating, namely uniformly coating the slurry prepared in the first step on a current collector, and drying a solvent;
step three: punching the pole piece manufactured in the second step into a specified size and shape by a punching device, moving the pole piece on a base, driving a piston rod to move by working of a pneumatic rod at the moment, further driving a lifting seat to move, matching a press-cutting upper die on the lifting seat with a press-cutting lower die on the base to press-cut the pole piece, contacting a movable frame plate of a limiting mechanism with the pole piece at the moment, compressing a first spring in an inner cavity of a fixed frame plate when the press-cutting upper die continuously presses down, pressing the movable frame plate on the top side of the pole piece under the action of the first spring to limit the pole piece in the press-cutting process, continuously moving the pole piece after press-cutting, moving along with the downward movement of the lifting seat when the pole piece passes below a sucking disc until the sucking disc is contacted with the pole piece after press-cutting, working of an air pump, generating negative pressure in the sucking disc, and sucking the pole piece after punching, move up and contact with the limiting plate when the lift seat, the bracing piece drives first piston and shifts up this moment, compress the second spring, in the side section of thick bamboo of impressing the interior air of top section of thick bamboo, the second piston drives the connecting rod and removes in the side section of thick bamboo, remove the blowpit to the sucking disc below, air pump work, pole piece after the die-cut drops to the blowpit on from the sucking disc, accomplish and unload, when the lift seat moves down once more, through the second spring, the top section of thick bamboo is inhaled to the interior air of side section of thick bamboo, the blowpit removes to lift seat one side, avoid causing the stop to the pole piece that lift seat and removal.
Preferably, the punching device comprises a base, a supporting seat and a lifting seat, wherein the top of the base is provided with an L-shaped supporting seat, a plurality of guide rods are arranged between the base and the supporting seat, and the outer sides of the guide rods are slidably provided with the lifting seat;
the utility model discloses a lifting device, including lifting seat, supporting seat lateral wall, lifting seat bottom side, supporting seat lateral wall, curb plate, slide mounting has the blowpit on the curb plate, lifting seat bottom side is installed and is pressed and cut mould and stop gear, and stop gear is located the outside of pressing and cutting the mould, a plurality of stay tube is installed to lifting seat bottom side, and installs the sucking disc in the stay tube bottom, the curb plate is installed to the supporting seat lateral wall, slidable mounting has the blowpit on the curb plate.
Preferably, an air pressure rod is installed at the top of the supporting seat, and a piston rod of the air pressure rod penetrates through the supporting seat and is connected with the lifting seat.
Preferably, stop gear includes fixed deckle board and activity deckle board, the inside elastic mounting of fixed deckle board has the activity deckle board, and activity deckle board bottom is located the fixed deckle board outside.
Preferably, an inner cavity is formed in the fixed frame plate, a plurality of first springs are arranged in the inner cavity, and the bottom ends of the first springs are connected with the movable frame plate.
Preferably, an air pump is installed on the top side of the lifting seat, and the air pump is in conduction connection with the supporting tube.
Preferably, a top cylinder is installed to lift seat top bottom side, top cylinder internally mounted has the second spring, and the second spring is connected with first piston, first piston is connected with the bracing piece top, and the bracing piece bottom runs through a top cylinder bottom and installs the limiting plate.
Preferably, a side cylinder is installed on the side plate, the end, far away from the side plate, of the side cylinder is connected with the top end of the top cylinder through an air pipe, a second piston is installed inside the side cylinder and connected with one end of a connecting rod, and the other end of the connecting rod is connected with the discharge chute.
The invention has the beneficial effects that: when the press-cutting device is used for press-cutting, and the press-cutting upper die is continuously pressed downwards, the movable frame plate compresses the first spring in the inner cavity of the fixed frame plate, the movable frame plate is pressed on the top side of the pole piece under the action of the first spring, the pole piece in the press-cutting process is limited, the pole piece is prevented from deviating in the press-cutting process, and the press-cutting accuracy is ensured;
meanwhile, the pole piece after being pressed and cut continuously moves, when the pole piece passes through the lower part of the sucking disc, the lifting seat moves downwards until the sucking disc is contacted with the pole piece after being pressed and cut, the air pump works, negative pressure is generated in the sucking disc to adsorb the pole piece, after punching, when the lifting seat moves upwards to be contacted with the limiting plate, the supporting rod drives the first piston to move upwards, the second spring is compressed, air in the top cylinder is pressed into the side cylinder, the second piston in the side cylinder drives the connecting rod to move, the discharge chute is moved to the lower part of the sucking disc, the air pump works, the punched pole piece falls off from the sucking disc to the discharge chute to finish discharging, when the lifting seat moves downwards again, the air in the side cylinder is sucked into the top cylinder through the second spring, the discharge chute moves to one side of the lifting seat to avoid blocking the lifting seat and the moving pole piece, automatic discharging of the cut slice is realized according to the moving state of the lifting seat, and the degree of automation is high, is convenient for practical operation and application.
Drawings
FIG. 1 is a schematic view of an overall first structure of the present invention;
FIG. 2 is a schematic view of an overall first structure of the present invention;
FIG. 3 is a side view of the present invention;
FIG. 4 is a schematic view of the internal structure of the limiting mechanism of the present invention;
FIG. 5 is a schematic view of the internal structure of the top and side barrels of the present invention.
Illustration of the drawings:
1. a base; 2. a supporting base; 3. a lifting seat; 4. a guide bar; 5. pressing and cutting the upper die; 6. a limiting mechanism; 7. pressing and cutting the lower die; 8. supporting a tube; 9. a suction cup; 10. a side plate; 11. a discharge chute; 12. a pneumatic rod; 13. a piston rod; 14. an air pump; 15. fixing the frame plate; 16. a movable frame plate; 17. an inner cavity; 18. a first spring; 19. a top cylinder; 20. a side cylinder; 21. a second spring; 22. a first piston; 23. a support bar; 24. a limiting plate; 25. a second piston; 26. a connecting rod.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Specific examples are given below.
Referring to fig. 1 to 5, a processing method for positive and negative electrode plates of a lithium battery comprises the following raw materials in parts by mass:
80-100 parts of electrode active material, 60-80 parts of solvent, 5-10 parts of binder and 1-4 parts of conductive agent;
the processing method comprises the following specific operations:
the method comprises the following steps: preparing electrode slurry, namely mixing an electrode active material, a solvent, a binder and a conductive agent together, and fully stirring and dispersing to form slurry;
step two: coating, namely uniformly coating the slurry prepared in the first step on a current collector, and drying a solvent;
step three: and (2) punching the pole piece, punching the pole piece manufactured in the step two into a specified size shape through a punching device, moving the pole piece on the base 1, driving the piston rod 13 to move through the work of the air pressure rod 12 at the moment, further driving the lifting seat 3 to move, matching the press-cutting upper die 5 on the lifting seat 3 with the press-cutting lower die 7 on the base 1 to press-cut the pole piece, contacting the movable frame plate 16 of the limiting mechanism 6 with the pole piece at first, and compressing the first spring 18 in the inner cavity 17 of the fixed frame plate 15 by the movable frame plate 16 when the press-cutting upper die 5 continuously presses down. The movable frame plate 16 is pressed on the top side of the pole piece through the action of the first spring 18 to limit the pole piece in the press-cutting process, meanwhile, the press-cut pole piece continuously moves, when the pole piece passes below the sucking disc 9, along with the downward movement of the lifting seat 3, until the sucking disc 9 is contacted with the press-cut pole piece, the air pump 14 works, negative pressure is generated in the sucking disc 9 to adsorb the pole piece, after punching, when the lifting seat 3 moves upwards to be contacted with the limiting plate 24, the supporting rod 23 drives the first piston 22 to move upwards to compress the second spring 21, air in the top cylinder 19 is pressed into the side cylinder 20, the second piston 25 in the side cylinder 20 drives the connecting rod 26 to move, the discharge chute 11 is moved to the lower part of the sucking disc 9, the air pump 14 works, the punched pole piece falls off from the sucking disc 9 to the discharge chute 11 to finish discharging, when the lifting seat 3 moves downwards again, air in the side cylinder 20 is sucked into the top cylinder 19 through the second spring 21, the discharge chute 11 moves to one side of the lifting seat 3, and the lifting seat 3 and the moving pole piece are prevented from being blocked.
The punching device comprises a base 1, a supporting seat 2 and a lifting seat 3, wherein the top of the base 1 is provided with the L-shaped supporting seat 2, a plurality of guide rods 4 are arranged between the base 1 and the supporting seat 2, the lifting seat 3 is arranged on the outer side of each guide rod 4 in a sliding manner, the top of the supporting seat 2 is provided with a pneumatic rod 12, a piston rod 13 of the pneumatic rod 12 penetrates through the supporting seat 2 to be connected with the lifting seat 3, and the lifting of the lifting seat 3 is realized by the working of the pneumatic rod 12;
the bottom side of the lifting seat 3 is provided with a press-cutting upper die 5 and a limiting mechanism 6, the limiting mechanism 6 is positioned on the outer side of the press-cutting upper die 5, the bottom side of the lifting seat 3 is provided with a plurality of supporting tubes 8, the bottom ends of the supporting tubes 8 are provided with suckers 9, the side wall of the supporting seat 2 is provided with a side plate 10, a discharge chute 11 is slidably arranged on the side plate 10, the limiting mechanism 6 comprises a fixed frame plate 15 and a movable frame plate 16, the fixed frame plate 15 is internally and elastically provided with the movable frame plate 16, the bottom end of the movable frame plate 16 is positioned on the outer side of the fixed frame plate 15, an inner cavity 17 is formed in the fixed frame plate 15, the inner cavity 17 is internally provided with a plurality of first springs 18, the bottom ends of the first springs 18 are all connected with the movable frame plate 16, when the press-cutting upper die 5 is continuously pressed downwards, the movable frame plate 16 compresses the first springs 18 in the inner cavity 17 of the fixed frame plate 15, the movable frame plate 16 is pressed on the top side of the pole piece under the action of the first springs 18, limiting the pole piece in the pressing and cutting process, installing an air pump 14 on the top side of a lifting seat 3, conducting and connecting the air pump 14 with a support tube 8, realizing the adsorption and separation of a sucker 9 and the pressed and cut pole piece through the work of the air pump 14, installing a top barrel 19 on the bottom side of the top of the lifting seat 3, installing a second spring 21 in the top barrel 19, connecting the second spring 21 with a first piston 22, connecting the first piston 22 with the top end of a support rod 23, installing a limit plate 24 at the bottom end of the support rod 23 penetrating through the bottom of the top barrel 19, installing a side barrel 20 on a side plate 10, connecting the end of the side barrel 20 far away from the side plate 10 with the top end of the top barrel 19 through an air pipe, installing a second piston 25 in the side barrel 20, connecting the second piston 25 with one end of a connecting rod 26, connecting the other end of the connecting rod 26 with a discharge chute 11, moving up the lifting seat 3 to contact with the limit plate 24, driving the first piston 22 to move up by the support rod 23, the second spring 21 is compressed, air in the top barrel 19 is pressed into the side barrel 20, the second piston 25 in the side barrel 20 drives the connecting rod 26 to move, the discharging groove 11 is moved to the position below the sucking disc 9, the air pump 14 works, the punched pole piece falls off from the sucking disc 9 to the discharging groove 11, discharging is completed, when the lifting seat 3 moves downwards again, air in the side barrel 20 is sucked into the top barrel 19 through the second spring 21, and the discharging groove 11 moves to one side of the lifting seat 3.
When the press-cutting device is used for press-cutting, and the press-cutting upper die 5 is continuously pressed downwards, the movable frame plate 16 compresses the first spring 18 in the inner cavity 17 of the fixed frame plate 15, the movable frame plate 16 is pressed on the top side of the pole piece under the action of the first spring 18, the pole piece in the press-cutting process is limited, the pole piece is prevented from deviating in the press-cutting process, and the press-cutting accuracy is ensured;
meanwhile, the pole piece after press cutting continuously moves, when the pole piece passes below the sucking disc 9, along with the downward movement of the lifting seat 3, until the sucking disc 9 is contacted with the pole piece after press cutting, the air pump 14 works, negative pressure is generated in the sucking disc 9 to adsorb the pole piece, after stamping, when the lifting seat 3 moves upwards to be contacted with the limiting plate 24, at the moment, the support rod 23 drives the first piston 22 to move upwards to compress the second spring 21, air in the top cylinder 19 is pressed into the side cylinder 20, the second piston 25 in the side cylinder 20 drives the connecting rod 26 to move, the discharge chute 11 is moved to the position below the sucking disc 9, the air pump 14 works, the punched pole piece falls off the sucking disc 9 to the discharge chute 11, discharging is completed, when the lifting seat 3 moves downwards again, air in the side cylinder 20 is sucked into the top cylinder 19 through the second spring 21, the discharge chute 11 is moved to one side of the lifting seat 3, blocking to the lifting seat 3 and the moving pole piece is avoided, and according to the moving state of the lifting seat 3, the automatic discharging of the slices after the pressing cutting is realized, the automation degree is high, and the practical operation and application are convenient.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The processing method for the positive and negative pole pieces of the lithium battery is characterized in that the positive and negative poles of the lithium battery are prepared from the following raw materials in parts by mass:
80-100 parts of electrode active material, 60-80 parts of solvent, 5-10 parts of binder and 1-4 parts of conductive agent;
the processing method comprises the following specific operations:
the method comprises the following steps: preparing electrode slurry, namely mixing an electrode active material, a solvent, a binder and a conductive agent together, and fully stirring and dispersing to form slurry;
step two: coating, namely uniformly coating the slurry prepared in the first step on a current collector, and drying a solvent;
step three: punching pole pieces, punching the pole pieces manufactured in the step two into a specified size shape through a punching device, moving the pole pieces on a base (1), driving a piston rod (13) to move through the work of a pressure rod (12) at the moment, further driving a lifting seat (3) to move, matching a press-cutting upper die (5) on the lifting seat (3) with a press-cutting lower die (7) on the base (1) to press and cut the pole pieces, firstly contacting a movable frame plate (16) of a limiting mechanism (6) with the pole pieces at the moment, when the press-cutting upper die (5) is continuously pressed down, compressing a first spring (18) in an inner cavity (17) of a fixed frame plate (15) by the movable frame plate (16) under the action of the first spring (18), limiting the pole pieces in the press-cutting process, simultaneously continuously moving the pole pieces after press-cutting, and when the pole pieces pass below a sucking disc (9), along with the downward movement of the lifting seat (3), until a sucking disc (9) is contacted with the pole piece after the pressing and cutting, the air pump (14) works, negative pressure is generated in the sucking disc (9) to adsorb the pole piece, and after the punching, when the lifting seat (3) moves upward to be contacted with a limiting plate (24), at the moment, a support rod (23) drives a first piston (22) to move upward to compress a second spring (21), air in a top cylinder (19) is pressed into a side cylinder (20), the second piston (25) in the side cylinder (20) drives a connecting rod (26) to move, a discharge chute (11) is moved to the lower part of the sucking disc (9), the air pump (14) works, the punched pole piece falls off from the sucking disc (9) to a discharge chute (11), the discharge is completed, when the lifting seat (3) moves downward again, air in the side cylinder (20) is sucked into the top cylinder (19) through the second spring (21), and the discharge chute (11) moves to one side of the lifting seat (3), avoid causing to block to lift seat (3) and the pole piece that removes.
2. The processing method for the positive and negative electrode plates of the lithium battery as claimed in claim 1, wherein the punching device comprises a base (1), a supporting seat (2) and a lifting seat (3), wherein the supporting seat (2) is installed in an L shape on the top of the base (1), a plurality of guide rods (4) are installed between the base (1) and the supporting seat (2), and the lifting seat (3) is installed on the outer side of each guide rod (4) in a sliding manner;
the utility model discloses a lifting seat, including lifting seat (3), lifting seat (3) bottom side install the pressure and cut last mould (5) and stop gear (6), and stop gear (6) are located the outside of pressure and cut last mould (5), a plurality of stay tube (8) are installed to lifting seat (3) bottom side, and stay tube (8) bottom installs sucking disc (9), curb plate (10) are installed to supporting seat (2) lateral wall, slidable mounting has blowpit (11) on curb plate (10).
3. The processing method for the positive and negative electrode plates of the lithium battery as claimed in claim 2, wherein a pneumatic rod (12) is mounted on the top of the supporting seat (2), and a piston rod (13) of the pneumatic rod (12) penetrates through the supporting seat (2) and is connected with the lifting seat (3).
4. The processing method for the positive and negative electrode plates of the lithium battery according to claim 2, wherein the limiting mechanism (6) comprises a fixed frame plate (15) and a movable frame plate (16), the movable frame plate (16) is elastically mounted inside the fixed frame plate (15), and the bottom end of the movable frame plate (16) is located outside the fixed frame plate (15).
5. The processing method for the positive and negative electrode plates of the lithium battery as claimed in claim 4, wherein the fixed frame plate (15) is internally provided with an inner cavity (17), the inner cavity (17) is internally provided with a plurality of first springs (18), and the bottom ends of the first springs (18) are connected with the movable frame plate (16).
6. The processing method for the positive and negative electrode plates of the lithium battery as claimed in claim 2, wherein an air pump (14) is installed on the top side of the lifting seat (3), and the air pump (14) is in conductive connection with the support tube (8).
7. The processing method for the positive and negative electrode plates of the lithium battery as claimed in claim 2, wherein a top cylinder (19) is installed at the bottom side of the top of the lifting seat (3), a second spring (21) is installed inside the top cylinder (19), the second spring (21) is connected with a first piston (22), the first piston (22) is connected with the top end of the supporting rod (23), and a limiting plate (24) is installed at the bottom end of the supporting rod (23) penetrating through the bottom of the top cylinder (19).
8. The processing method for the positive and negative electrode plates of the lithium battery is characterized in that a side cylinder (20) is installed on the side plate (10), the end, far away from the side plate (10), of the side cylinder (20) is connected with the top end of the top cylinder (19) through a gas pipe, a second piston (25) is installed inside the side cylinder (20), the second piston (25) is connected with one end of a connecting rod (26), and the other end of the connecting rod (26) is connected with a discharge chute (11).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210294282.5A CN114759165B (en) | 2022-03-24 | 2022-03-24 | Processing method for positive and negative pole pieces of lithium battery |
| NL2034063A NL2034063B1 (en) | 2022-03-24 | 2023-02-01 | Machining method for positive and negative pole pieces of lithium battery |
| LU503423A LU503423B1 (en) | 2022-03-24 | 2023-02-01 | Machining method for positive and negative pole pieces of lithium battery |
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| CN202210294282.5A CN114759165B (en) | 2022-03-24 | 2022-03-24 | Processing method for positive and negative pole pieces of lithium battery |
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| CN114759165B CN114759165B (en) | 2024-02-06 |
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| Country | Link |
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| CN (1) | CN114759165B (en) |
| LU (1) | LU503423B1 (en) |
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| CN115301496A (en) * | 2022-09-02 | 2022-11-08 | 天科新能源有限责任公司 | Sodium ion battery negative plate point dipping coating device capable of uniformly dispersing slurry and operation method |
| CN115318560A (en) * | 2022-09-05 | 2022-11-11 | 天科新能源有限责任公司 | Sodium ion battery electrode coating device and operation method |
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| CN113319198A (en) * | 2021-06-09 | 2021-08-31 | 中聚达(湖北)新能源有限公司 | Lithium battery pole piece punch forming processing machine and method |
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2022
- 2022-03-24 CN CN202210294282.5A patent/CN114759165B/en active Active
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- 2023-02-01 NL NL2034063A patent/NL2034063B1/en active
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| US20090165936A1 (en) * | 2007-12-06 | 2009-07-02 | Eliily Power Co., Ltd. | Method and apparatus for manufacturing electrode assembly for rectangular battery |
| CN201676975U (en) * | 2010-03-15 | 2010-12-22 | 苏州星恒电源有限公司 | Discharging device for lithium battery pole piece cutting machine |
| CN210615268U (en) * | 2019-07-22 | 2020-05-26 | 嵇旭辉 | Pole piece slitting equipment for lithium battery production |
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| CN115301496A (en) * | 2022-09-02 | 2022-11-08 | 天科新能源有限责任公司 | Sodium ion battery negative plate point dipping coating device capable of uniformly dispersing slurry and operation method |
| CN115301496B (en) * | 2022-09-02 | 2024-03-12 | 天科新能源有限责任公司 | Sodium ion battery negative plate dip coating device for uniformly dispersing slurry and operation method |
| CN115318560A (en) * | 2022-09-05 | 2022-11-11 | 天科新能源有限责任公司 | Sodium ion battery electrode coating device and operation method |
| CN115318560B (en) * | 2022-09-05 | 2024-03-12 | 天科新能源有限责任公司 | Sodium ion battery electrode coating device and operation method |
Also Published As
| Publication number | Publication date |
|---|---|
| NL2034063B1 (en) | 2023-11-16 |
| CN114759165B (en) | 2024-02-06 |
| NL2034063A (en) | 2023-10-03 |
| LU503423B1 (en) | 2023-09-25 |
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