CN116404354A - Extension device for preparing lithium battery diaphragm - Google Patents
Extension device for preparing lithium battery diaphragm Download PDFInfo
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- CN116404354A CN116404354A CN202310412126.9A CN202310412126A CN116404354A CN 116404354 A CN116404354 A CN 116404354A CN 202310412126 A CN202310412126 A CN 202310412126A CN 116404354 A CN116404354 A CN 116404354A
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 134
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 133
- 230000000670 limiting effect Effects 0.000 claims abstract description 60
- 238000009826 distribution Methods 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims description 44
- 230000001681 protective effect Effects 0.000 claims description 15
- 230000008878 coupling Effects 0.000 claims description 10
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims 2
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000002829 reductive effect Effects 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 2
- 230000036961 partial effect Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 230000037303 wrinkles Effects 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the technical field of diaphragm stretching, in particular to an extension device for preparing a lithium battery diaphragm. The problem that the diaphragm deformation is overlarge and damage caused by the fact that the thickness is reduced in the diaphragm stretching process to cause the change of the clamping force of the diaphragm and the clamping distance is too small is solved. Including first base, first base symmetry sliding connection has first carriage, and first carriage rotates to be connected with the rotating turret, and first carriage is provided with angle adjusting component, and the rotating turret rotates to be connected with symmetrical distribution's first drive wheel and second drive wheel, winds between first drive wheel and the second drive wheel and is equipped with the chain, and the chain is provided with evenly spaced distribution's clamping component, and first drive wheel is provided with spacing subassembly. According to the lithium battery diaphragm stretching device, the thickness is reduced when the lithium battery diaphragm is stretched, the clamping assembly is used for keeping stable clamping force on the lithium battery diaphragm, and the lithium battery diaphragm is stretched in a partitioned mode through the cooperation of the clamping assembly and the limiting assembly, so that the uniformity of stretching of the lithium battery diaphragm is improved.
Description
Technical Field
The invention relates to the technical field of diaphragm stretching, in particular to an extension device for preparing a lithium battery diaphragm.
Background
The lithium battery is representative of a modern high-performance battery and consists of a positive electrode material, a negative electrode material, a diaphragm and electrolyte, wherein the diaphragm is a film with a micropore structure and mainly used for separating the positive electrode and the negative electrode of the battery and preventing the positive electrode from being contacted with the negative electrode to form a short circuit, but when the lithium battery diaphragm is used, the condition that the length and the width of the diaphragm are not matched with those of the lithium battery can occur, and the length and the width of the diaphragm need to be extended.
The existing double-pull equipment is used for grabbing and fixing two sides of a diaphragm, then transversely stretching the diaphragm, when transversely stretching the diaphragm, the thickness of the diaphragm can be thinner and thinner in the continuous stretching process, the clamping force of a clamping part can be changed, when the clamping force of the diaphragm is overlarge, different degrees of folds can be caused at the clamping positions of the two sides of the diaphragm, the diaphragm can be caused to fall off when the clamping force of the diaphragm is too small, and when the diaphragm is stretched, the two sides of the diaphragm of the lithium battery are stretched only through the two stretched parts of the diaphragm of the existing double-pull equipment, the two sides of the diaphragm of the lithium battery are deformed in preference to the middle part, and when the two sides are deformed, the tensile force received by the middle part of the diaphragm of the lithium battery is reduced, so that the expansion degree of the two sides of the diaphragm of the lithium battery is larger than that of the middle part of the diaphragm of the lithium battery is present.
Disclosure of Invention
In order to overcome the defects that when the diaphragm is stretched, the clamping force is too large, so that different degrees of wrinkles are generated at the clamping positions on two sides of the diaphragm, the diaphragm falls off when the clamping force is too small, and when the two side parts of the diaphragm for clamping the lithium battery deform, the tension force on the middle part is reduced, so that the stretching degree of the middle part of the diaphragm is smaller than that of the two side parts, and the stretching device for preparing the diaphragm for the lithium battery is provided.
The technical proposal is as follows: the utility model provides an extension device is used in lithium cell diaphragm preparation, including first base, first base rotates and is connected with the commentaries on classics roller, first base symmetry sliding connection has first carriage, first carriage rotates and is connected with the rotating turret, be provided with electronic slide rail between first carriage and the rotating turret, one side that the rotating roller was kept away from to first carriage is provided with the angle modulation subassembly that is used for carrying out the regulation to the swing angle of rotating turret, the rotating turret rotates and is connected with symmetrical distribution's first drive wheel and second drive wheel, around being equipped with the chain between first drive wheel and the second drive wheel, the chain is provided with evenly spaced distribution's clamping assembly, clamping assembly is including the mounting, the mounting rigid coupling is in the chain, the mounting rotates and is connected with the spur gear, be provided with the torsional spring between mounting and the spur gear, mounting symmetry sliding connection has the second carriage, second carriage sliding connection has first slider, be provided with the spring between first carriage, first slider rotates and is connected with first, one side rigid coupling that the second carriage is close to the mounting has the ejector pad, first drive wheel carries out the spacing subassembly to carry out the spacing subassembly through the high limit for the lithium cell, the first side-stop subassembly carries out the extension to the lithium cell, the high limit for the first side-stop subassembly sets up the clamping assembly, the high limit for carrying out the diaphragm.
Preferably, the angle adjusting assembly comprises a first electric push rod fixedly connected to one side, far away from the rotating roller, of the first sliding frame, a connecting block is fixedly connected to the telescopic end of the first electric push rod, and a first rotating piece fixedly connected with the connecting block is connected to the sliding frame in a sliding manner.
Preferably, the second sliding frame is connected with a second sliding piece in a sliding manner, the second sliding piece is connected with a second pressing plate in a rotating manner, a spring is arranged between the second pressing plate and the second sliding frame, and one end, far away from the second pressing plate, of the second sliding piece is fixedly connected with a U-shaped plate.
Preferably, the limiting assembly comprises a first connecting frame, the first connecting frame is symmetrically and slidably connected with the first driving wheel and the second driving wheel, a fixed frame which is in sliding fit with the top block is fixedly connected with the first connecting frame, trapezoid blocks are fixedly connected to opposite sides of the symmetrically distributed fixed frame, and the thickness of the trapezoid blocks is sequentially increased from the first driving wheel to the second driving wheel.
Preferably, the first connecting frame is fixedly connected with a limiting frame, one side, adjacent to the lithium battery diaphragm, of the limiting frame is inwards sunken, the sunken part of the limiting frame is located between the middle position of the limiting frame and the adjacent second driving wheel, and the first sliding piece is fixedly connected with a limiting pin in sliding fit with the limiting frame.
Preferably, the first connecting frame is fixedly connected with a first limiting rod, adjacent first limiting rods are vertically symmetrically distributed, the first limiting rods corresponding to the concave positions of the limiting frames protrude upwards and downwards respectively, the first connecting frame on the first driving wheel is fixedly connected with a second limiting rod fixedly connected with the first limiting rod, the inclination of the second limiting rod is sequentially increased from the first driving wheel to the second driving wheel, the first connecting frame is in sliding fit with the U-shaped plate of the adjacent second sliding part, the second limiting rod is in sliding fit with the U-shaped plate of the adjacent second sliding part, and the inclination of the second limiting rod is consistent with that of the trapezoid block.
Preferably, the height adjusting assembly comprises an F-shaped frame fixedly connected to a rotating frame, symmetrically distributed fixing frames are fixedly connected with second connecting frames, the second connecting frames are provided with second rotating pieces, the F-shaped frame is rotationally connected with first studs in threaded fit with the second rotating pieces, the F-shaped frame is rotationally connected with rotating blocks, the upper portions of the inner sides of the rotating blocks are spline grooves, one sides of the first studs, close to the F-shaped frame, are slidably connected with spline shafts in spline fit with the spline grooves of the rotating blocks, springs are arranged between the spline shafts and the first studs, and the spline shafts are provided with hexagonal grooves.
Preferably, the lithium battery diaphragm heating device further comprises a second base, wherein the second base is fixedly connected between the first sliding frame and the support, a protective shell is fixedly connected to the second base, the protective shell is symmetrically provided with an exhaust fan, a cover plate is inserted on the protective shell, and a heating assembly for softening the lithium battery diaphragm is arranged on the second base.
Preferably, the heating element is including the third link, third link rigid coupling is in the second base, third link symmetry rigid coupling has out bellows, the length of going out bellows is greater than the width of lithium cell diaphragm, the protective housing rigid coupling has the air heater, the air heater passes through the connecting pipe and goes out bellows intercommunication, it is connected with the swing plate to go out bellows symmetry rotation, the swing plate of symmetry distribution is all rotated and is connected with the third and rotates the piece, the air heater is located the opposite side of third rotation piece, the third rotation piece sliding connection of symmetry distribution has the connecting rod.
Preferably, one side of the second base, which is close to the third rotating piece, is fixedly connected with an L-shaped frame, the L-shaped frame is rotationally connected with a second double-end stud matched with the connecting rod in a threaded manner, a gear is fixedly connected with the second double-end stud, the L-shaped frame is fixedly connected with a second electric push rod, and a rack frame meshed with the gear of the second double-end stud is fixedly connected with the telescopic end of the second electric push rod.
The beneficial effects of the invention are as follows: through the cooperation of kicking block and trapezoidal face, make second carriage with first clamp plate and second clamp plate continuously to the centre extrusion, follow the continuous reduction of thickness of lithium cell diaphragm in-process, make first clamp plate and second clamp plate keep holding the clamping state to the lithium cell diaphragm when holding stable clamping force to the lithium cell diaphragm.
The lithium battery diaphragm is subjected to partition stretching through the first pressing plate and the second pressing plate, the middle part of the lithium battery diaphragm is stretched in advance, and the problem that the stretching degree of the two sides of the lithium battery diaphragm is larger than that of the middle part of the lithium battery diaphragm due to the fact that the stretching parts of the two sides of the lithium battery diaphragm are reduced to a great extent.
By adjusting the swing amplitude of the rotating frame, the extension degree of the lithium battery diaphragm is adapted, the larger the amplitude of the outward swing of the rotating frame is, the larger the extension amplitude of the lithium battery diaphragm is, the smaller the amplitude of the outward swing of the rotating frame is, and the smaller the extension amplitude of the lithium battery diaphragm is.
Through the cooperation of high adjusting part and second link, make two second carriage and kicking block of upper and lower symmetry and upper part simultaneously outwards expand or inwards shrink, and then change the interval between upper and lower adjacent first clamp plate and the second clamp plate to this adaptation lithium cell diaphragm of different thickness.
Through heating mechanism to the lithium cell diaphragm soften, make the lithium cell diaphragm be more easily by extension, when softening thinner lithium cell diaphragm, through the cooperation of swing plate and connecting rod, make the swing plate outwards swing simultaneously, increase the coverage to thicker lithium cell diaphragm when increasing the air-out scope of bellows, through the cooperation of swing plate and connecting rod, make the swing plate inwards swing simultaneously, reduce the coverage to thinner lithium cell diaphragm when reducing the air-out scope of bellows.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a front cross-sectional view of a three-dimensional structure of the present invention.
Fig. 3 is a rear view of the three-dimensional structure of the present invention.
Fig. 4 is a schematic view of a partial perspective structure of the angle adjusting assembly of the present invention.
Fig. 5 is a top view of the clamping assembly and spacing assembly of the present invention.
Fig. 6 is a partial perspective view of the clamping assembly and spacing assembly of the present invention.
Fig. 7 is a perspective cross-sectional view of the clamping mechanism of the present invention.
Fig. 8 is a schematic perspective view of a limiting assembly according to the present invention.
Fig. 9 is a schematic partial perspective view of a limiting assembly according to the present invention.
Fig. 10 is a partial perspective view of a spacing assembly of the present invention.
Fig. 11 is a schematic perspective view of a spacing assembly and a height adjustment assembly according to the present invention.
Fig. 12 is a cross-sectional view of a partial height adjustment assembly of the present invention.
Fig. 13 is an exploded view of a partial height adjustment assembly of the present invention.
Fig. 14 is a schematic perspective view of a heating mechanism according to the present invention.
Fig. 15 is a schematic view of a partial perspective view of a heating mechanism according to the present invention.
Reference numerals: 1-first base, 2-roller, 3-first carriage, 301-electric slide, 4-roller, 5-angle adjustment assembly, 501-first electric push rod, 502-connection block, 503-first rotation member, 6-first drive wheel, 601-second drive wheel, 7-chain, 8-clamping assembly, 801-fixed member, 802-spur gear, 803-second carriage, 804-first carriage, 805-first platen, 806-top block, 807-second carriage, 808-second platen, 9-limit assembly, 901-first connection frame, 902-fixed frame, 9021-trapezoid block, 903-limit frame, 904-first limit rod, 9041-second limit rod, 10-height adjustment assembly, 1001-F-shaped frame, 1002-second connection frame, 1003-second rotation member, 1004-first stud, 1006-spline shaft, 11-bracket, 12-lithium battery diaphragm, 13-second base, 1301-protective housing, 1302-cover plate, 14014-third connection frame, 9021-trapezoid block, 903-limit frame, 903-first connection frame, 903-first limit rod, 90-second connection frame, 1001-F-shaped frame, 1002-second connection frame, 1002-second rotation member, 1004-first stud, 1006-spline shaft, 11-bracket, 12-electric diaphragm, 13-second base, 1301-first cover plate, 1302-cover plate, 14014-third connection frame, 1405-third heat-fixing frame, 1403-fixing frame, 90-height adjustment frame, 903-F-second connection frame, 1001-F-second connection frame, etc.
Description of the embodiments
The invention is further described below with reference to the drawings and the detailed description.
Examples
The utility model provides an extension device for lithium battery diaphragm preparation, as shown in fig. 1-10, including first base 1, first base 1 rotates and is connected with roller 2, first base 1 symmetry sliding connection has first carriage 3, first carriage 3 rotates and is connected with rotating turret 4, be provided with electronic slide rail 301 between first carriage 3 and the rotating turret 4, the left side of first carriage 3 is provided with adjusting part 5, adjusting part 5 is used for adjusting rotating turret 4's swing angle, adjust the outside swing range of two rotating turrets 4 through adjusting part 5, thereby adapt to the extension degree of lithium battery diaphragm 12, the outside swing range of rotating turret 4 is bigger, the extension degree of lithium battery diaphragm 12 is also bigger, the outside swing range of rotating turret 4 is less, the extension degree of lithium battery diaphragm 12 is also less, rotating turret 4 rotates and is connected with symmetrical distribution's first drive wheel 6 and second drive wheel 601, the chain 7 is wound between the first driving wheel 6 and the second driving wheel 601, the chain 7 is provided with clamping assemblies 8 which are uniformly distributed at intervals, the clamping assemblies 8 comprise fixing pieces 801, the fixing pieces 801 are fixedly connected with the chain 7, the fixing pieces 801 are rotationally connected with spur gears 802, torsion springs are arranged between the fixing pieces 801 and the spur gears 802, the fixing pieces 801 are symmetrically and slidingly connected with second sliding frames 803, the second sliding frames 803 are provided with racks, the racks of the second sliding frames 803 are meshed with the spur gears 802, the second sliding frames 803 are slidingly connected with first sliding pieces 804, the first sliding pieces 804 slide forwards and backwards on the second sliding frames 803, springs are arranged between the first sliding pieces 804 and the second sliding frames 803, the first sliding pieces 804 are rotationally connected with first pressing plates 805, one sides of the second sliding frames 803 close to the fixing pieces 801 are fixedly connected with top blocks 806, the side that the mounting 801 was kept away from to the second carriage 803 sliding connection has second slider 807, second slider 807 is the upper and lower slip on second carriage 803, second slider 807 rotates and is connected with second clamp plate 808, be provided with the spring between second clamp plate 808 and the second carriage 803, the top welding of second slider 807 has the U-shaped board, and the breach of U-shaped board is towards kicking block 806, first drive wheel 6 is provided with spacing subassembly 9, spacing subassembly 9 is used for spacing second carriage 803 and second slider 807, rotating turret 4 is provided with high adjustment subassembly 10, high adjustment subassembly 10 is used for adjusting spacing subassembly 9's height, first base 1 is provided with support 11, place lithium cell diaphragm 12 on the support 11, first slider 804 and first clamp plate 805 are used for carrying out the clamp fastening to lithium cell diaphragm 12, drive first clamp plate 805 and second clamp plate 808 through the rotation of chain 7 transversely extend lithium cell diaphragm 12.
As shown in fig. 4-12, the limiting component 9 comprises a first connecting frame 901, the first connecting frame 901 is symmetrically and slidingly connected to a first driving wheel 6 and a second driving wheel 601, the first connecting frame 901 is fixedly connected with a fixed frame 902 slidingly matched with a top block 806, opposite sides of the symmetrically distributed fixed frame 902 are fixedly connected with trapezoid blocks 9021 slidingly matched with the top block 806, the trapezoid blocks 9021 are positioned at the inner sides of the fixed frame 902, the thickness of the trapezoid blocks 9021 is sequentially increased from the first driving wheel 6 to the second driving wheel 601, the top block 806 on the second sliding frame 803 is extruded by the trapezoid blocks 9021, the first pressing plate 805 and the second pressing plate 808 on the second sliding frame 803 continuously clamp the lithium battery diaphragm 12, the first pressing plate 805 and the second pressing plate 808 continuously keep clamping the lithium battery diaphragm 12 along with the reduction of the thickness of the lithium battery diaphragm 12, the first connecting frame 901 is fixedly connected with the limiting frame 903, the side of the limiting frame 903 adjacent to the lithium battery diaphragm 12 is recessed inwards, the recessed part of the limiting frame 903 is positioned between the middle position of the limiting frame 903 and the adjacent second driving wheel 601, the limiting pin is fixedly connected with the first sliding piece 804, the limiting pin of the first sliding piece 804 is in sliding fit with the limiting frame 903, when the limiting pin on the outer side of the first sliding piece 804 contracts inwards along the recess of the limiting frame 903, the lithium battery diaphragm 12 is stretched secondarily, the uniformity of extending the lithium battery diaphragm 12 is further enhanced, the first connecting frame 901 on the second driving wheel 601 is fixedly connected with the first limiting rod 904, the adjacent first limiting rods 904 are distributed vertically symmetrically, the upper first limiting rod 904 corresponding to the recessed part of the limiting frame 903 protrudes upwards, the lower first limiting rod 904 is symmetrical with the upper first limiting rod 904, when the U-shaped plate on the second sliding piece 807 slides to the protruding position of the first limiting rod 904, the second sliding pieces 807 and the second pressing plates 808 on the upper side and the lower side are separated, the second pressing plates 808 are separated from contact with the lithium battery diaphragm 12, repeated stretching of the lithium battery diaphragm 12 by the first pressing plates 805 is prevented, the first connecting frame 901 on the first driving wheel 6 is fixedly connected with the second limiting rod 9041, the second limiting rod 9041 is fixedly connected with the first limiting rod 904, the inclination of the second limiting rod 9041 is sequentially increased from the direction from the first driving wheel 6 to the second driving wheel 601, the U-shaped plates of the second sliding pieces 807 are respectively in sliding fit with the adjacent first connecting frame 901 or the second limiting rod 9041, and the inclination of the second limiting rod 9041 is consistent with that of the trapezoid block 9021.
When the lithium battery diaphragm 12 needs to be stretched, a worker firstly controls the electric sliding rail 301 to translate back and forth, so that the electric sliding rail 301 and the upper parts thereof on two sides move oppositely or back to adapt to the initial width of the lithium battery diaphragm 12, then a user swings the rotating frame 4 and the upper parts thereof inwards or outwards simultaneously by controlling the angle adjusting component 5, so as to adapt to the stretching degree requirement of the lithium battery diaphragm 12, the larger the outward swing amplitude of the rotating frame 4 is, the larger the stretching amplitude of the lithium battery diaphragm 12 is, otherwise, the smaller the outward swing amplitude of the rotating frame 4 is, the smaller the stretching amplitude of the lithium battery diaphragm 12 is, when the thickness of the lithium battery diaphragm 12 is thicker, the distance between the first connecting frame 901 and the fixed frame 902 which are symmetrical up and down is increased by the height adjusting component 10, the first sliding piece 804 and the first pressing plate 805 clamp the thicker lithium battery diaphragm 12, otherwise, when the thickness of the lithium battery diaphragm 12 is thinner, the first sliding piece 804 and the first pressing plate 805 clamp the first sliding piece 805, and the thin battery diaphragm 12 are prepared.
When the lithium battery diaphragm 12 is stretched, a worker starts the first driving wheel 6 and the second driving wheel 601 at first, so that the first driving wheel 6 and the second driving wheel 601 drive the chain 7 to rotate, the chain 7 drives the second sliding frame 803 and parts on the second sliding frame 803 to move when rotating, then the user stretches the lithium battery diaphragm 12 leftwards, the lithium battery diaphragm 12 is grabbed by the first pressing plate 805 and the second pressing plate 808 to move leftwards, the lithium battery diaphragm 12 is stretched forwards and backwards, when the lithium battery diaphragm 12, the second sliding frame 803 and parts on the second sliding frame 803 move leftwards, the top block 806 on the second sliding frame 803 is extruded by the trapezoid block 9021, when the second sliding frame 803 and parts on the second sliding frame are moved along the trapezoid block 9021 from right to left, the second sliding frame 803 and parts on the second sliding frame are gradually gathered towards the middle, and the thickness is continuously reduced in the stretching process of the lithium battery diaphragm, the clamping force of the first pressing plate 805 and the second pressing plate 808 on the lithium battery diaphragm 12 is kept stable, when the second sliding piece 807 rotates towards the inner side of the chain 7, the U-shaped plate at the top end of the second sliding piece 807 is clamped into the right side of the second limiting rod 9041, the first pressing plate 805 and the second pressing plate 808 simultaneously grip the lithium battery diaphragm 12 along with the movement of the second sliding frame 803, when the U-shaped plate on the second sliding piece 807 slides to the convex part of the first limiting rod 904, the second sliding piece 807 and the second pressing plate 808 on the upper side and the lower side simultaneously stretch outwards, the spring between the second sliding frame 803 and the second pressing plate 808 is compressed while stretching, the second pressing plate 808 is separated from the contact with the lithium battery diaphragm 12, the repeated stretching of the lithium battery diaphragm 12 by the first pressing plate 805 is prevented, and then when the first sliding piece 804 and the first pressing plate 805 move to the concave part of the limiting frame 903, the limiting pin on the outer side of the first sliding piece 804 contracts inwards along the concave part of the limiting frame 903 and stretches the lithium battery diaphragm 12 for the second time, at this time, the spring between the first sliding piece 804 and the second sliding piece 803 is in a stretched state, when the U-shaped plate on the second sliding piece 807 is separated from contact with the first limiting rod 904, under the action of the spring between the second sliding piece 803 and the second pressing plate 808, the second sliding piece 807 and the second pressing plate 808 are restored to the basic state, when the limiting pin on the outer side of the first sliding piece 804 is separated from the concave part of the limiting frame 903, under the action of the spring between the first sliding piece 804 and the second sliding piece 803, the first sliding piece 804 is restored to the basic state, and after the top piece 806 is separated from contact with the trapezoid block 9021, the second sliding piece 803 and the upper part thereof are expanded outwards to the basic state under the action of the torsion spring between the fixing piece 801 and the spur gear 802, at this time, the extension of the lithium battery diaphragm 12 is completed.
Examples
On the basis of embodiment 1, as shown in fig. 1-4, the angle adjusting assembly 5 comprises a first electric push rod 501, the first electric push rod 501 is connected to the left side of the first sliding frame 3 by a bolt, the telescopic end of the first electric push rod 501 is fixedly connected with a connecting block 502, the rotating frame 4 is slidably connected with a first rotating part 503 fixedly connected with the connecting block 502, the two rotating frames 4 are simultaneously pushed outwards by the two first electric push rods 501, the outwards swinging amplitude of the rotating frames 4 is increased, and conversely, the two rotating frames 4 are simultaneously pulled inwards by the two first electric push rods 501, the outwards swinging amplitude of the rotating frames 4 is reduced, so that the extending degree of the lithium battery diaphragm 12 is adapted.
As shown in fig. 5 and 11-13, the height adjusting assembly 10 includes an F-shaped frame 1001, the F-shaped frame 1001 is fixedly connected to the rotating frame 4, symmetrically distributed fixing frames 902 are all connected with a second connecting frame 1002 by bolts, the second connecting frame 1002 is provided with a second rotating member 1003, the F-shaped frame 1001 is rotationally connected with a first stud 1004, the first stud 1004 is in threaded engagement with the second rotating member 1003, the two sides of the first stud 1004 are in opposite rotation directions, the F-shaped frame 1001 is rotationally connected with a rotating block 1005, an upper portion of an inner side of the rotating block 1005 is a spline groove, an upper side of the first stud 1004 is slidably connected with a spline shaft 1006 in spline engagement with the spline groove of the rotating block 1005, a spring is arranged between the spline shaft 1006 and the first stud 1004, the spline shaft 1006 is provided with a hexagonal groove, when the lithium battery diaphragm 12 is thin, the clamping of the thin lithium battery diaphragm 12 is adapted by reducing the distance between the upper and lower adjacent first and second pressing plates 805, and when the lithium battery diaphragm 12 is thicker, the clamping of the thin battery diaphragm 808 is adapted by increasing the distance between the first pressing plates 808 and the second pressing plates 808.
When the extension degree of the lithium battery diaphragm 12 is required to be adjusted according to different requirements, the first electric push rods 501 on the front side and the rear side push the two connecting blocks 502, the first rotating part 503, the rotating frame 4 and the upper parts thereof outwards simultaneously, the amplitude of the outward swing of the rotating frame 4 and the upper parts thereof is increased, so that the extension degree of the lithium battery diaphragm 12 is increased, otherwise, the first electric push rods 501 on the front side and the rear side pull the two connecting blocks 502, the first rotating part 503, the rotating frame 4 and the upper parts thereof inwards simultaneously, and the amplitude of the outward swing of the rotating frame 4 and the upper parts thereof is reduced, so that the extension degree of the lithium battery diaphragm 12 is reduced.
When the thicker lithium battery diaphragm 12 needs to be clamped, a user firstly inserts a hexagonal wrench into a hexagonal groove of the spline shaft 1006, then presses the spline shaft 1006, so that the upper part of the spline shaft 1006 is separated from contact with a spline groove of the rotating block 1005, limit of the rotating block 1005 on the spline shaft 1006 is relieved, a spring between the spline shaft 1006 and the first double-end stud 1004 is compressed, then the spline shaft 1006 and the second rotating member 1003 are rotated, two second connecting frames 1002 and 902 distributed up and down and upper parts of the fixed frame are separated, under the action of a torsion spring between the fixed member 801 and the spur gear 802, two second sliding frames 803 and top blocks 806 which are symmetrical up and down and upper parts of the top blocks are separated, the distance between the upper and lower adjacent first pressing plates 805 and second pressing plates 808 is increased, and further, when the thinner lithium battery diaphragm 12 needs to be clamped, the spline shaft 1003 and the second rotating member 1003 are reversely rotated, the two second connecting frames 1002 and the fixed frame and the upper and lower parts of the fixed frame are separated, the upper and lower parts of the upper and lower pressing plates 808 are adjacent to each other, and the distance between the upper and lower parts of the upper and lower pressing plates 808 is reduced.
After corresponding adjustment is performed according to the thickness of the lithium battery diaphragm 12, a user pulls out the hexagonal wrench from the hexagonal groove of the spline shaft 1006, and under the action of the spring between the spline shaft 1006 and the first stud 1004, the spline shaft 1006 is reset upwards and inserted into the spline groove of the rotating block 1005, so that the spline groove of the rotating block 1005 limits the spline shaft 1006.
Examples
On the basis of embodiment 2, as shown in fig. 2, 14 and 15, the lithium battery separator is further provided with a second base 13, the second base 13 is connected between the first sliding frame 3 and the bracket 11 by bolts, the second base 13 is connected with a protective shell 1301 by bolts, the protective shell 1301 is symmetrically provided with an exhaust fan 15, a cover plate 1302 is inserted on the protective shell 1301, the second base 13 is connected with a third connecting frame 1401 by bolts, the third connecting frame 1401 is symmetrically and fixedly connected with an exhaust fan 1402, hot air is blown to the upper side and the lower side of the lithium battery separator 12 by the two exhaust fans 1402, the lithium battery separator 12 is softened by the influence of the hot air, the length of the exhaust fan 1402 is longer than the width of the lithium battery separator 12, the protective shell 1301 is fixedly connected with an air heater 1403, the air heater 1403 is communicated with the exhaust fan 1402 by a connecting pipe, the exhaust fan 1402 is symmetrically and rotatably connected with swinging plates 1404, the symmetrically distributed swinging plates 1404 are rotatably connected with third rotating pieces 1405, by increasing the swing amplitude of the two swing plates 1404, the air outlet range of the air outlet box 1402 is increased, the coverage of the thinner lithium battery diaphragm 12 is increased, by decreasing the swing amplitude of the two swing plates 1404, the air outlet range of the air outlet box 1402 is decreased, the coverage of the thicker lithium battery diaphragm 12 is decreased, the air heater 1403 is positioned on the opposite side of the third rotating member 1405, the symmetrically distributed third rotating member 1405 is in sliding connection with a connecting rod 1406, one side of the second base 13 close to the third rotating member 1405 is fixedly connected with an L-shaped frame 1407, the L-shaped frame 1407 is rotatably connected with a second double-head screw 1408 in threaded fit with the connecting rod 1406, the second double-head screw 1408 is in key connection with a gear, the L-shaped frame 1407 is fixedly connected with a second electric push rod 1409, and the telescopic end of the second electric push rod 1409 is fixedly connected with a rack 1410 meshed with the gear of the second double-head screw 1408.
Before the lithium battery diaphragm 12 is stretched, the lithium battery diaphragm 12 needs to be heated, the lithium battery diaphragm 12 has optimal ductility at a proper temperature, when the lithium battery diaphragm 12 is heated and softened, a worker firstly starts the air heater 1403, hot air is conveyed into the two air outlet boxes 1402 through the connecting pipes by the air heater 1403, then the air in the air outlet boxes is discharged outwards through the air outlet fans 15 on the two sides by starting the air outlet fans 15 on the two sides, the protective shell 1301 is kept in air circulation, the cover plate 1302 is pulled upwards to be out of contact with the protective shell 1301, the lithium battery diaphragm 12 is pulled into the protective shell 1301 by the user, then hot air is blown to the upper side and the lower side of the lithium battery diaphragm 12 through the two air outlet boxes 1402 to be heated rapidly, the lithium battery diaphragm 12 is softened under the influence of the hot air, when the thicker lithium battery diaphragm 12 is softened, the user pushes the rack 1410 to the left through the second electric push rod 1409, drives the second double-ended screw rod 1408 and the gear thereon to rotate clockwise through the rack 1410, and when the second double-ended screw rod 1408 rotates clockwise, the two connecting rods 1406 expand outwards simultaneously, and when the connecting rods 1406 expand, the two third rotating members 1405 are extruded, and the two third rotating members 1405 drive the two swinging plates 1404 to swing outwards simultaneously, thereby expanding the air outlet range of the two air outlet boxes 1402, increasing the air outlet range of the air outlet boxes 1402, and increasing the coverage of the thinner lithium battery diaphragm 12, so as to prolong the heating time of the thicker lithium battery diaphragm 12, thereby making the heating of the lithium battery diaphragm 12 more uniform, and otherwise, when the thicker lithium battery diaphragm 12 is softened, the rack 1410 drives the second double-ended screw rod 1408 and the gear thereon to rotate anticlockwise, when the second double-head screw post 1408 rotates anticlockwise, the two connecting rods 1406 shrink inwards simultaneously, the two third rotating pieces 1405 are extruded by the shrinkage of the connecting rods 1406, so that the two third rotating pieces 1405 drive the two swinging plates 1404 to swing inwards simultaneously, the air outlet range of the two air outlet boxes 1402 is reduced, the air outlet range of the air outlet boxes 1402 is reduced, and the coverage of the thinner lithium battery diaphragm 12 is reduced, so that overheating of the thinner lithium battery diaphragm 12 is prevented.
After softening the lithium battery diaphragm 12, the user pulls the lithium battery diaphragm 12 out of the protective housing 1301, the softened lithium battery diaphragm 12 is supported by the rotating roller 2, the softened lithium battery diaphragm 12 is pulled between the first pressing plate 805 and the second pressing plate 808 by the user to be fixed, and then the extending process of the lithium battery diaphragm 12 is performed, and when the extending of the lithium battery diaphragm 12 is stopped, the user turns off the air heater 1403 and the air draft fan 15.
Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (10)
1. The utility model provides an extension device is used in lithium cell diaphragm preparation, including first base (1), first base (1) rotate and are connected with roller (2), first base (1) symmetry sliding connection has first carriage (3), first carriage (3) rotate and are connected with rotating frame (4), be provided with electronic slide rail (301) between first carriage (3) and rotating frame (4), one side that roller (2) was kept away from to first carriage (3) is provided with angle adjusting component (5) that are used for carrying out the swing angle of adjusting rotating frame (4), rotating frame (4) rotate and are connected with first drive wheel (6) and second drive wheel (601) of symmetric distribution, around being equipped with chain (7) between first drive wheel (6) and second drive wheel (601), characterized by: the lithium battery membrane battery clamping device comprises a lithium battery, and is characterized by further comprising clamping assemblies (8), wherein the uniformly-spaced clamping assemblies (8) are arranged on a chain (7), the clamping assemblies (8) comprise fixing pieces (801), the fixing pieces (801) are fixedly connected to the chain (7), spur gears (802) are rotationally connected to the fixing pieces (801), torsion springs are arranged between the fixing pieces (801) and the spur gears (802), the fixing pieces (801) are symmetrically and slidably connected with second sliding frames (803), the second sliding frames (803) are provided with racks meshed with the spur gears (802), the second sliding frames (803) are slidably connected with first sliding pieces (804), springs are arranged between the first sliding pieces (804) and the second sliding frames (803), a first pressing plate (805) is rotationally connected to the first sliding pieces (804), a top block (806) is fixedly connected to one side of the second sliding frames (803) close to the fixing pieces (801), a limiting assembly (9) limiting the clamping assemblies (8) is arranged on the first driving wheel (6), a height adjusting assembly (10) used for adjusting the height of the limiting assemblies (9) is arranged on the rotating frames (4), a first supporting frame (1) is provided with a first pressing plate (12) used for clamping the first pressing plate (11), the first pressing plate (805) clamps the lithium battery diaphragm (12) and transversely extends the lithium battery diaphragm at the same time through rotation of the chain (7).
2. The extension device for preparing a lithium battery separator according to claim 1, wherein: the angle adjusting assembly (5) comprises a first electric push rod (501), wherein the first electric push rod (501) is fixedly connected to one side, far away from the rotating roller (2), of the first sliding frame (3), a connecting block (502) is fixedly connected to the telescopic end of the first electric push rod (501), and a first rotating part (503) fixedly connected with the connecting block (502) is slidably connected to the rotating frame (4).
3. The extension device for preparing a lithium battery separator according to claim 1, wherein: the second sliding frame (803) is connected with a second sliding piece (807) in a sliding mode, the second sliding piece (807) is connected with a second pressing plate (808) in a rotating mode, a spring is arranged between the second pressing plate (808) and the second sliding frame (803), and one end, far away from the second pressing plate (808), of the second sliding piece (807) is fixedly connected with a U-shaped plate.
4. The extension device for preparing a lithium battery separator according to claim 1, wherein: limiting component (9) are including first link (901), first link (901) symmetry sliding connection is in first drive wheel (6) and second drive wheel (601), first link (901) rigid coupling have with kicking block (806) sliding fit's fixed frame (902), symmetrical distribution's fixed frame (902) all rigid coupling has trapezoidal piece (9021) in opposite sides, the thickness of trapezoidal piece (9021) increases in proper order by first drive wheel (6) to second drive wheel (601).
5. The extension device for preparing a lithium battery separator according to claim 4, wherein: the first connecting frame (901) is fixedly connected with a limiting frame (903), one side, adjacent to the lithium battery diaphragm (12), of the limiting frame (903) is inwards sunken, the sunken part of the limiting frame (903) is located between the middle position of the limiting frame and the adjacent second driving wheel (601), and the first sliding piece (804) is fixedly connected with a limiting pin in sliding fit with the limiting frame (903).
6. The extension device for preparing a lithium battery separator according to claim 4, wherein: first connecting frame (901) rigid coupling has first gag lever post (904), the upper and lower symmetric distribution of adjacent first gag lever post (904), first gag lever post (904) corresponding with the concave part of spacer (903) are upwards and downside protrusion respectively, first connecting frame (901) rigid coupling on first drive wheel (6) has second gag lever post (9041) with first gag lever post (904) rigid coupling, the inclination of second gag lever post (9041) is increased in proper order by the direction of first drive wheel (6) to second drive wheel (601), the U shaped plate sliding fit of first connecting frame (901) and adjacent second slider (807), the inclination of second gag lever post (9041) is unanimous with trapezoidal piece (9021) with the U shaped plate sliding fit of adjacent second slider (807).
7. The extension device for preparing a lithium battery separator according to claim 1, wherein: the height adjusting assembly (10) comprises an F-shaped frame (1001), the F-shaped frame (1001) is fixedly connected to a rotating frame (4), symmetrically distributed fixed frames (902) are fixedly connected with second connecting frames (1002), the second connecting frames (1002) are provided with second rotating members (1003), the F-shaped frame (1001) is rotationally connected with first studs (1004) in threaded fit with the second rotating members (1003), the F-shaped frame (1001) is rotationally connected with rotating blocks (1005), the upper portion of the inner sides of the rotating blocks (1005) is spline grooves, spline shafts (1006) in spline fit with the spline grooves of the rotating blocks (1005) are slidably connected to one sides of the first studs (1004) close to the F-shaped frame (1001), springs are arranged between the spline shafts (1006) and the first studs (1004), and the spline shafts (1006) are provided with hexagonal grooves.
8. The extension device for preparing a lithium battery separator according to claim 1, wherein: the lithium battery separator comprises a lithium battery separator body, and is characterized by further comprising a second base (13), wherein the second base (13) is fixedly connected between the first sliding frame (3) and the support (11), a protective shell (1301) is fixedly connected to the second base (13), exhaust fans (15) are symmetrically arranged on the protective shell (1301), a cover plate (1302) is inserted on the protective shell (1301), and a heating assembly (14) for softening the lithium battery separator membrane (12) is arranged on the second base (13).
9. The extension device for preparing a lithium battery separator according to claim 8, wherein: the heating assembly (14) comprises a third connecting frame (1401), the third connecting frame (1401) is fixedly connected to the second base (13), the third connecting frame (1401) is symmetrically fixedly connected with an air outlet box (1402), the length of the air outlet box (1402) is larger than the width of a lithium battery diaphragm (12), a protection shell (1301) is fixedly connected with an air heater (1403), the air heater (1403) is communicated with the air outlet box (1402) through a connecting pipe, the air outlet box (1402) is symmetrically rotated and connected with a swinging plate (1404), the swinging plates (1404) which are symmetrically distributed are all rotated and connected with a third rotating piece (1405), the air heater (1403) is located on the opposite side of the third rotating piece (1405), and the third rotating piece (1405) which is symmetrically distributed is slidably connected with a connecting rod (1406).
10. The extension device for preparing a lithium battery separator according to claim 8, wherein: an L-shaped frame (1407) is fixedly connected to one side, close to the third rotating piece (1405), of the second base (13), a second stud (1408) in threaded fit with the connecting rod (1406) is rotatably connected to the L-shaped frame (1407), a gear is fixedly connected to the second stud (1408), a second electric push rod (1409) is fixedly connected to the L-shaped frame (1407), and a rack (1410) meshed with the gear of the second stud (1408) is fixedly connected to the telescopic end of the second electric push rod (1409).
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| CN202310412126.9A CN116404354B (en) | 2023-04-18 | 2023-04-18 | Extension device for preparing lithium battery diaphragm |
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| CN202310412126.9A CN116404354B (en) | 2023-04-18 | 2023-04-18 | Extension device for preparing lithium battery diaphragm |
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| CN115384040A (en) * | 2022-08-15 | 2022-11-25 | 青海北捷新材料科技有限公司 | Lithium battery diaphragm production width extension equipment |
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| EP2570253A1 (en) * | 2011-09-19 | 2013-03-20 | Innocente Marchante Moreno | Apparatus for stretching a resin film in transverse and longitudinal direction |
| CN105957998A (en) * | 2016-06-30 | 2016-09-21 | 界首市天鸿新材料股份有限公司 | Extension device for lithium battery diaphragm |
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