CN110212155B - Production process of battery pole piece - Google Patents
Production process of battery pole piece Download PDFInfo
- Publication number
- CN110212155B CN110212155B CN201910657821.5A CN201910657821A CN110212155B CN 110212155 B CN110212155 B CN 110212155B CN 201910657821 A CN201910657821 A CN 201910657821A CN 110212155 B CN110212155 B CN 110212155B
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- pole piece
- leveling
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- rolling
- taut
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000005096 rolling process Methods 0.000 claims abstract description 54
- 239000002002 slurry Substances 0.000 claims abstract description 34
- 238000001125 extrusion Methods 0.000 claims abstract description 26
- 239000011248 coating agent Substances 0.000 claims abstract description 17
- 238000000576 coating method Methods 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 34
- 238000010009 beating Methods 0.000 claims description 26
- 238000012545 processing Methods 0.000 claims description 24
- 238000004804 winding Methods 0.000 claims description 13
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- 238000005452 bending Methods 0.000 claims description 7
- 238000004381 surface treatment Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- 230000008263 repair mechanism Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- 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
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0435—Rolling or calendering
-
- 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
-
- 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)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to a production process of a battery pole piece, which mainly comprises the following steps of preparing slurry, coating, rolling the pole piece, slitting the pole piece, drying the pole piece and the like. The invention can solve the following problems of the existing battery pole piece in the rolling operation process, namely a, the pole piece is directly output from a roll gap after the battery pole piece is rolled by the existing equipment, the rolled pole piece is easy to shrink due to the elasticity of the pole piece, so that the thickness of coating on the pole piece is uneven, and the use effect of the battery pole piece is influenced, b, the existing rolling equipment can only simply roll the pole piece, cannot perform multi-stage extrusion and stretching treatment on the pole piece, and cannot control the deformation of the rolled pole piece.
Description
Technical Field
The invention relates to the technical field of production processes of lithium battery pole pieces, in particular to a production process of a battery pole piece.
Background
The lithium ion battery has high energy density and high average output voltage. Excellent cycle performance, rapid charge and discharge, high charging efficiency and large output power. The service life is long. The wide application and each big field, the pole piece is the important subassembly that influences lithium cell life and result of use, and the production preparation of pole piece plays crucial effect to the lithium cell, divide into in pole piece production operation, prepares thick liquids, coating thick liquids, roll-in pole piece, pole piece cut with steps such as pole piece drying, wherein roll-in pole piece is great to the thickness influence of coating on the pole piece, can lead to under the inhomogeneous condition of coating thickness in the roll-in pole piece operation battery life to reduce.
However, the following problems of the existing battery pole piece in the rolling operation process include that a, the pole piece is directly output from a roll gap after the existing equipment is used for rolling the battery pole piece, the rolled pole piece is easy to shrink due to the elasticity of the pole piece, so that the thickness of coating on the pole piece is uneven, and the using effect of the battery pole piece is influenced.
About some common problems in lithium-ion battery pole piece in production, research has been made to relevant trade to specific technical scheme has been proposed, for example chinese utility model patent pole piece roll-in device of application number 2018209810686 can adjust the roll-in interval between two sets of rollers according to the pole piece processing needs, realizes the pole piece roll-in device to the two roll-in processes of the different thickness of dusting pole piece.
In summary, the above-mentioned problems of the pole piece in the rolling process of the present invention still remain an important technical problem to be solved.
Disclosure of Invention
In order to solve the problems, the invention provides a production process of a battery pole piece, which can solve the problems of the pole piece in the rolling operation process.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: a production process of a battery pole piece mainly comprises the following steps:
preparing slurry, putting raw materials for coating a battery pole piece into a stirring reaction kettle, stirring for 3-5 hours, pouring the stirred slurry out of the stirring reaction kettle, screening the stirred slurry, and filtering impurities and particle objects in the slurry;
step two, coating operation, namely pouring the slurry obtained in the step one into a slurry vessel, controlling a pole piece to penetrate through the slurry vessel at the speed of 1-3m/min, completely immersing the pole piece into the slurry in the slurry vessel, and controlling the thickness of a sizing material on the pole piece from the position where the pole piece is output from the slurry vessel through a coating scraper so that the slurry is uniformly coated on the pole piece to obtain a coated pole piece;
step three, performing rolling operation, namely controlling the coated pole piece obtained in the step two to pass through rolling equipment from left to right, winding the left end of the coated pole piece into a pole piece roll, winding the right end of the coated pole piece on a winding machine, controlling the coated pole piece to move from left to right at a speed of 4-5m/min by the winding machine, and rolling the coated pole piece by the rolling equipment to obtain a rolled pole piece;
step four, slitting the pole pieces, controlling the rolled pole pieces obtained in the step three to move at a constant speed, cutting two ends of the rolled pole pieces by a cutting machine, finely grinding and flattening two ends of the cut rolled pole pieces to keep the two ends of the rolled pole pieces flat, controlling the cut rolled pole pieces to pass through a pole piece shearing machine, and equally cutting the rolled pole pieces by the pole piece shearing machine to obtain slit pole pieces;
step five, drying the pole piece, controlling the cut pole piece obtained in the step four to be conveyed into a drying box, heating to 50-60 ℃ at the speed of 3-5 ℃/min, preserving the heat for 15-25 min, then cooling to the normal temperature state at the speed of 2 ℃/min, and taking out the dried pole piece from the drying box to obtain the pole piece;
the rolling equipment used in the three-roller pressing operation comprises a rolling frame, wherein guide rollers are symmetrically arranged at the left end and the right end of the rolling frame through bearings, a supporting frame is arranged on the rolling frame, a tensioning mechanism is arranged at the lower end of the supporting frame, a rolling plate is arranged on the inner wall of the supporting frame, and a surface treatment mechanism, a surface repairing mechanism and a leveling mechanism are sequentially arranged on the supporting frame from left to right;
the leveling mechanism comprises a leveling support arranged on a support frame, leveling operation rollers are arranged on the inner wall of the leveling support through bearings, and leveling auxiliary rollers matched with the leveling operation rollers to move are symmetrically arranged in the leveling grooves; the rear ends of the leveling operation roller and the leveling auxiliary roller are respectively provided with a driving gear, the driving gears are meshed with driving racks, the driving racks are fixed on a linkage belt, the linkage belt is sleeved between the two rotating rollers, the rotating roller positioned at the right end is connected to a leveling motor, and the leveling motor is fixed on a supporting frame;
level and smooth mounting groove has been seted up to the both ends symmetry about the support, levels and is provided with the level and restore the frame through the reset spring pole in the mounting groove, levels and restore the upper end of frame and connect on leveling the crane through the round pin axle, levels the crane and installs on leveling the executive board through the round pin axle, and leveling the executive board and installing on leveling the cylinder, and leveling the cylinder is fixed on leveling the support.
The tensioning mechanism comprises a tensioning cylinder for mounting the lower end of the supporting frame, the lower end of the tensioning cylinder is mounted on the tensioning support plate, tensioning linkage rods are symmetrically arranged at the left end and the right end of the tensioning support plate through pin shafts, the tensioning linkage rods are mounted on the tensioning execution plate through pin shafts, the tensioning execution plate is arranged on the supporting frame through pin shafts, a tensioning operation groove is formed in the tensioning execution plate, and a tensioning operation roller is arranged in the tensioning operation groove through pin shafts.
The left end and the right end of the roll pressing plate are both arc-shaped bending structures, the middle position of the roll pressing plate is a downward V-shaped bending structure, and the right end of the roll pressing plate is provided with a leveling groove matched with a leveling mechanism for use;
the surface treatment mechanism comprises a treatment frame arranged on a support frame, a beating cavity and a flattening cavity are arranged in the treatment frame in a staggered mode from left to right, an elliptic cylinder is arranged in the beating cavity through a bearing, the lower end of the elliptic cylinder abuts against a beating frame, the beating frame penetrates through the beating cavity in a sliding fit mode, a spring is arranged between the beating frame and the beating cavity, and the lower end of the beating frame is of a concave-convex structure; a flattening roller is arranged in the flattening cavity through a bearing;
the elliptic cylinder and the flattening roller penetrate through the processing frame to be provided with chain wheels, the chain wheels are connected through chains, a processing motor is arranged on the chain wheel at the left end of the processing frame, and the processing motor is fixed on the processing frame.
The surface repairing mechanism comprises an extrusion cylinder arranged on a supporting frame, the top end of the extrusion cylinder is arranged on an extrusion support through a flange, and the lower end and the left and right ends of the extrusion support are provided with extrusion rollers through bearings.
The inner walls of the upper and lower parallel ends of the linkage belt are abutted against the straightening plate, and the straightening plate is fixed on the outer wall of the supporting frame.
The leveling reset frame is a structure with a flat middle part and two upward inclined and tilted ends.
The plane of the lower end of the flattening roller is positioned on the lower side of the plane of the lower end of the flattening cavity.
The invention has the beneficial effects that:
1. the invention can solve the following problems existing in the rolling operation process of the existing battery pole piece, a, the pole piece after the rolling processing of the battery pole piece by the existing equipment is directly output from a roll gap, the rolled pole piece is easy to shrink due to the elasticity of the pole piece, so that the thickness of the coating on the pole piece is uneven, and the use effect of the battery pole piece is influenced, b, the existing rolling equipment can only simply roll the pole piece, cannot perform multi-stage extrusion and stretching processing on the pole piece, cannot control the deformation of the rolled pole piece, and can realize the function of high-precision rolling operation of the pole piece.
2. The surface treatment mechanism, the surface repair mechanism and the leveling mechanism are matched with each other in work to carry out multi-polarization treatment on the rolled pole piece, the pole piece after multi-stage treatment is stretched and extruded to a limit state, elastic deformation cannot occur, and the uniformity of the coating on the pole piece can be ensured.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic view of the structure of the rolling apparatus of the present invention;
FIG. 3 is a schematic view of the structure of the surface treating mechanism of the present invention;
FIG. 4 is a cross-sectional view of FIG. 3 of the present invention;
FIG. 5 is a schematic view of the structure between the flattening mechanism and the roll-in plate according to the present invention;
fig. 6 is an enlarged view of the invention taken from the direction I of fig. 2.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1-6, a process for producing a battery pole piece mainly comprises the following steps:
preparing slurry, putting raw materials for coating a battery pole piece into a stirring reaction kettle, stirring for 3-5 hours, pouring the stirred slurry out of the stirring reaction kettle, screening the stirred slurry, and filtering impurities and particle objects in the slurry;
step two, coating operation, namely pouring the slurry obtained in the step one into a slurry vessel, controlling a pole piece to penetrate through the slurry vessel at the speed of 1-3m/min, completely immersing the pole piece into the slurry in the slurry vessel, and controlling the thickness of a sizing material on the pole piece from the position where the pole piece is output from the slurry vessel through a coating scraper so that the slurry is uniformly coated on the pole piece to obtain a coated pole piece;
step three, performing rolling operation, namely controlling the coated pole piece obtained in the step two to pass through rolling equipment from left to right, winding the left end of the coated pole piece into a pole piece roll, winding the right end of the coated pole piece on a winding machine, controlling the coated pole piece to move from left to right at a speed of 4-5m/min by the winding machine, and rolling the coated pole piece by the rolling equipment to obtain a rolled pole piece;
step four, slitting the pole pieces, controlling the rolled pole pieces obtained in the step three to move at a constant speed, cutting two ends of the rolled pole pieces by a cutting machine, finely grinding and flattening two ends of the cut rolled pole pieces to keep the two ends of the rolled pole pieces flat, controlling the cut rolled pole pieces to pass through a pole piece shearing machine, and equally cutting the rolled pole pieces by the pole piece shearing machine to obtain slit pole pieces;
step five, drying the pole piece, controlling the cut pole piece obtained in the step four to be conveyed into a drying box, heating to 50-60 ℃ at the speed of 3-5 ℃/min, preserving the heat for 15-25 min, then cooling to the normal temperature state at the speed of 2 ℃/min, and taking out the dried pole piece from the drying box to obtain the pole piece;
the rolling equipment used in the three-roller pressing operation comprises a rolling frame 1, guide rollers 2 are symmetrically arranged at the left end and the right end of the rolling frame 1 through bearings, a supporting frame 3 is installed on the rolling frame 1, a tensioning mechanism 4 is installed at the lower end of the supporting frame 3, a rolling plate 5 is arranged on the inner wall of the supporting frame 3, and a surface treatment mechanism 6, a surface repairing mechanism 7 and a leveling mechanism are sequentially arranged on the supporting frame 3 from left to right.
The left end and the right end of the rolling plate 5 are both arc-shaped bending structures, the middle position of the rolling plate 5 is a downward V-shaped bending structure, and the right end of the rolling plate 5 is provided with a leveling groove matched with a leveling mechanism;
the tensioning mechanism 4 comprises a tensioning cylinder 41 for mounting the lower end of the supporting frame 3, the lower end of the tensioning cylinder 41 is mounted on a tensioning support plate 42, tensioning linkage rods 43 are symmetrically arranged at the left end and the right end of the tensioning support plate 42 through pin shafts, the tensioning linkage rods 43 are mounted on a tensioning execution plate 44 through pin shafts, the tensioning execution plate 44 is arranged on the supporting frame 3 through pin shafts, a tensioning operation groove is formed in the tensioning execution plate 44, and a tensioning operation roller 45 is arranged in the tensioning operation groove through pin shafts.
The tensioning cylinder 41 controls the tensioning support plate 42 to lift, and the tensioning support plate 42 controls the tensioning execution plate 44 to open and close through the tensioning linkage rod 43, so that the pole piece in operation is in a tensioned state at any time.
The surface treatment mechanism 6 comprises a treatment frame 61 arranged on the support frame 3, a beating cavity 62 and a flattening cavity 63 are arranged inside the treatment frame 61 in a staggered mode from left to right, an elliptic cylinder 64 is arranged in the beating cavity 62 through a bearing, the lower end of the elliptic cylinder 64 abuts against a beating frame 65, the beating frame 65 penetrates through the beating cavity 62 in a sliding fit mode, a spring is arranged between the beating frame 65 and the beating cavity 62, and the lower end of the beating frame 65 is of a concave-convex structure; a flattening roller 66 is arranged in the flattening cavity 63 through a bearing;
the elliptic cylinder 64 and the flattening roll 66 are both provided with chain wheels 67 through the processing frame 61, the chain wheels 67 are connected through chains 68, a processing motor 69 is arranged on the chain wheel 67 at the left end of the processing frame 61, and the processing motor 69 is fixed on the processing frame 61.
The processing motor 69 controls the elliptic cylinder 64 and the flattening roller 66 to rotate synchronously in a chain transmission mode, the elliptic cylinder 64 controls the beating frame 65 to beat the pole piece in the rotation process, and the flattening roller 66 extrudes the beaten pole piece in the motion process, so that the surface of the processed pole piece is repaired and leveled.
The surface repairing mechanism 7 comprises an extrusion cylinder 71 arranged on the supporting frame 3, the top end of the extrusion cylinder 71 is arranged on an extrusion support 72 through a flange, and the lower end and the left and right ends of the extrusion support 72 are provided with extrusion rollers 73 through bearings. The extrusion cylinder 71 controls the extrusion roller 73 on the extrusion support 72 to cooperate with the V-shaped bending structure in the middle of the rolling plate 5 to perform secondary extrusion processing operation on the pole piece.
The leveling mechanism comprises a leveling support 81 arranged on the supporting frame 3, a leveling operation roller 82 is arranged on the inner wall of the leveling support 81 through a bearing, and leveling auxiliary rollers 83 which are matched with the leveling operation roller 82 to move are symmetrically arranged in the leveling groove; the rear ends of the leveling operation roller 82 and the leveling auxiliary roller 83 are both provided with a driving gear 84, a driving rack 85 is meshed on the driving gear 84, the driving rack 85 is fixed on a linkage belt 86, the linkage belt 86 is sleeved between the two rotating rollers 87, the rotating roller 87 positioned at the right end is connected to a leveling motor 88, and the leveling motor 88 is fixed on the supporting frame 3;
the inner walls of the upper and lower parallel ends of the linkage belt 86 are abutted against the straightening plate 89, and the straightening plate 89 is fixed on the outer wall of the support frame 3.
Level and smooth mounting groove has been seted up to both ends symmetry about support 81, levels and is provided with level and smooth reset frame 811 through reset spring pole 810 in the mounting groove, levels the upper end of reset frame 811 and levels on crane 812 through the round pin hub connection, levels crane 812 and installs on leveling execution board 813 through the round pin hub, levels execution board 813 and installs on leveling cylinder 814, levels cylinder 814 and fixes on leveling support 81.
The leveling motor 88 works to control the linkage belt 86 to rotate, the linkage belt 86 is matched with the straightening plate 89 during rotation, the driving rack 85 is in a tightened state during movement so as to control the driving rack 85 to rotate, the leveling operation roller 82 and the leveling auxiliary roller 83 rotate in opposite directions under the action of the linkage belt 86, the leveling operation roller 82 and the leveling auxiliary roller 83 are matched to roll pole pieces, the leveling cylinder 814 controls the leveling execution plate 813 to adjust the height, the leveling execution plate 813 controls the leveling lifting frame 812 to extrude the leveling reset frame 811 during movement, and the reset spring rod 810 plays a role in resetting the leveling reset frame 811, so that the leveling reset frame 811 can be controlled to perform secondary stretching extrusion operation on the pole pieces before and after rolling.
During rolling operation, the winding machine controls the pole pieces to move from left to right, the tensioning mechanism 4 controls the pole pieces to be always kept in a tensioning state in processing operation, the surface processing mechanism 6 conducts primary beating extrusion on the pole pieces, the surface repairing mechanism 7 conducts secondary extrusion processing operation on the pole pieces, the leveling mechanism conducts rolling on the pole pieces after the two-time extrusion processing and controls the leveling reset frame 811 to conduct secondary stretching extrusion operation on the pole pieces before and after rolling, and therefore the pole pieces are stretched to a limit state, and the pole pieces cannot be rebounded.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A production process of a battery pole piece is characterized by mainly comprising the following steps:
preparing slurry, putting raw materials for coating a battery pole piece into a stirring reaction kettle, stirring for 3-5 hours, pouring the stirred slurry out of the stirring reaction kettle, screening the stirred slurry, and filtering impurities and particle objects in the slurry;
step two, coating operation, namely pouring the slurry obtained in the step one into a slurry vessel, controlling a pole piece to penetrate through the slurry vessel at the speed of 1-3m/min, completely immersing the pole piece into the slurry in the slurry vessel, and controlling the thickness of a sizing material on the pole piece from the position where the pole piece is output from the slurry vessel through a coating scraper so that the slurry is uniformly coated on the pole piece to obtain a coated pole piece;
step three, performing rolling operation, namely controlling the coated pole piece obtained in the step two to pass through rolling equipment from left to right, winding the left end of the coated pole piece into a pole piece roll, winding the right end of the coated pole piece on a winding machine, controlling the coated pole piece to move from left to right at a speed of 4-5m/min by the winding machine, and rolling the coated pole piece by the rolling equipment to obtain a rolled pole piece;
step four, slitting the pole pieces, controlling the rolled pole pieces obtained in the step three to move at a constant speed, cutting two ends of the rolled pole pieces by a cutting machine, finely grinding and flattening two ends of the cut rolled pole pieces to keep the two ends of the rolled pole pieces flat, controlling the cut rolled pole pieces to pass through a pole piece shearing machine, and equally cutting the rolled pole pieces by the pole piece shearing machine to obtain slit pole pieces;
step five, drying the pole piece, controlling the cut pole piece obtained in the step four to be conveyed into a drying box, heating to 50-60 ℃ at the speed of 3-5 ℃/min, preserving the heat for 15-25 min, then cooling to the normal temperature state at the speed of 2 ℃/min, and taking out the dried pole piece from the drying box to obtain the pole piece;
the rolling equipment used in the three-roller pressing operation comprises a rolling frame (1), wherein guide rollers (2) are symmetrically arranged at the left end and the right end of the rolling frame (1) through bearings, a supporting frame (3) is installed on the rolling frame (1), a tensioning mechanism (4) is installed at the lower end of the supporting frame (3), a rolling plate (5) is arranged on the inner wall of the supporting frame (3), and a surface treatment mechanism (6), a surface repair mechanism (7) and a leveling mechanism are sequentially arranged on the supporting frame (3) from left to right;
the leveling mechanism comprises a leveling support (81) arranged on the supporting frame (3), a leveling operation roller (82) is arranged on the inner wall of the leveling support (81) through a bearing, and leveling auxiliary rollers (83) matched with the leveling operation roller (82) to move are symmetrically arranged in the leveling groove; the rear ends of the leveling operation roller (82) and the leveling auxiliary roller (83) are respectively provided with a driving gear (84), the driving gears (84) are meshed with a driving rack (85), the driving racks (85) are fixed on a linkage belt (86), the linkage belt (86) is sleeved between two rotating rollers (87), the rotating roller (87) at the right end is connected to a leveling motor (88), and the leveling motor (88) is fixed on the supporting frame (3);
the left end and the right end of the leveling support (81) are symmetrically provided with leveling installation grooves, a leveling reset frame (811) is arranged in each leveling installation groove through a reset spring rod (810), the upper end of each leveling reset frame (811) is connected to a leveling lifting frame (812) through a pin shaft, each leveling lifting frame (812) is installed on a leveling execution plate (813) through a pin shaft, each leveling execution plate (813) is installed on a leveling cylinder (814), and each leveling cylinder (814) is fixed on the leveling support (81);
the surface treatment mechanism (6) comprises a treatment frame (61) arranged on a support frame (3), a beating cavity (62) and a flattening cavity (63) are arranged inside the treatment frame (61) in a staggered mode from left to right, an elliptic column (64) is arranged in the beating cavity (62) through a bearing, the lower end of the elliptic column (64) abuts against a beating frame (65), the beating frame (65) penetrates through the beating cavity (62) in a sliding fit mode, a spring is arranged between the beating frame (65) and the beating cavity (62), and the lower end of the beating frame (65) is of a concave-convex structure; a rolling roller (66) is arranged in the rolling cavity (63) through a bearing;
the elliptic cylinder (64) and the flattening roll (66) both pass through the processing frame (61) and are provided with chain wheels (67), the chain wheels (67) are connected through chains (68), the chain wheel (67) positioned at the left end of the processing frame (61) is provided with a processing motor (69), and the processing motor (69) is fixed on the processing frame (61);
the surface repairing mechanism (7) comprises an extrusion cylinder (71) arranged on the supporting frame (3), the top end of the extrusion cylinder (71) is arranged on an extrusion support (72) through a flange, and the lower end and the left and right ends of the extrusion support (72) are provided with extrusion rollers (73) through bearings.
2. The production process of the battery pole piece, according to claim 1, is characterized in that: tensioning mechanism (4) are including installing taut cylinder (41) of braced frame (3) lower extreme, the lower extreme of taut cylinder (41) is installed on taut extension board (42), both ends are provided with taut gangbar (43) through the round pin axle symmetry about taut extension board (42), taut gangbar (43) are installed on taut executive board (44) through the round pin axle, taut executive board (44) set up on braced frame (3) through the round pin axle, taut operation groove has been seted up on taut executive board (44), taut operation inslot is provided with taut operation roller (45) through the round pin axle.
3. The production process of the battery pole piece, according to claim 1, is characterized in that: the left end and the right end of the rolling plate (5) are both arc-shaped bending structures, the middle position of the rolling plate (5) is a downward V-shaped bending structure, and the right end of the rolling plate (5) is provided with a leveling groove matched with a leveling mechanism for use.
4. The production process of the battery pole piece, according to claim 1, is characterized in that: the inner walls of the upper and lower parallel ends of the linkage belt (86) are abutted against the straightening plate (89), and the straightening plate (89) is fixed on the outer wall of the supporting frame (3).
5. The production process of the battery pole piece, according to claim 1, is characterized in that: the leveling reset frame (811) is a structure with a flat middle part and two upward inclined and tilted ends.
6. The production process of the battery pole piece, according to claim 1, is characterized in that: the plane of the lower end of the rolling roller (66) is positioned at the lower side of the plane of the lower end of the rolling cavity (63).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910657821.5A CN110212155B (en) | 2019-07-20 | 2019-07-20 | Production process of battery pole piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910657821.5A CN110212155B (en) | 2019-07-20 | 2019-07-20 | Production process of battery pole piece |
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| Publication Number | Publication Date |
|---|---|
| CN110212155A CN110212155A (en) | 2019-09-06 |
| CN110212155B true CN110212155B (en) | 2019-12-20 |
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| CN201910657821.5A Active CN110212155B (en) | 2019-07-20 | 2019-07-20 | Production process of battery pole piece |
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| CN111482774A (en) * | 2019-09-24 | 2020-08-04 | 钱车华 | Pole piece manufacturing process convenient for cleaning scraps |
| CN111162243B (en) * | 2019-10-14 | 2021-10-26 | 江巧巧 | Processing method of lithium battery pole piece with good quality |
| CN111900324B (en) * | 2020-07-17 | 2022-11-15 | 合肥国轩高科动力能源有限公司 | Lithium-ion battery pole piece rolling device |
| CN113394366B (en) * | 2021-06-11 | 2022-06-28 | 四川无量智慧道桥科技有限公司 | Production process and system of high-precision lithium battery pole piece |
| CN117096282B (en) * | 2023-10-16 | 2024-01-05 | 四川中哲新材料科技有限公司 | Sodium ion battery pole piece treatment facility |
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| CN106711403A (en) * | 2015-07-21 | 2017-05-24 | 东莞力朗电池科技有限公司 | Positive and negative plates' density and thickness uniformity rolling device |
| CN208368620U (en) * | 2018-06-25 | 2019-01-11 | 湖北天神高新技术有限公司 | pole piece rolling device |
| CN109473625A (en) * | 2018-12-31 | 2019-03-15 | 枣庄领创新能源科技有限公司 | A kind of lithium battery pole slice roll squeezer |
| CN109742326B (en) * | 2019-01-02 | 2021-04-20 | 深圳吉阳智能科技有限公司 | Lithium ion battery pole piece rolling device |
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