CN113471623B - Trimming treatment method for heat-set lithium battery diaphragm - Google Patents

Trimming treatment method for heat-set lithium battery diaphragm Download PDF

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Publication number
CN113471623B
CN113471623B CN202110568661.4A CN202110568661A CN113471623B CN 113471623 B CN113471623 B CN 113471623B CN 202110568661 A CN202110568661 A CN 202110568661A CN 113471623 B CN113471623 B CN 113471623B
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plate
mounting
rotating shaft
column
electric
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CN113471623A (en
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张裕台
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Hunan Nuobang New Energy Technology Co ltd
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Hunan Nuobang New Energy Technology Co ltd
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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
    • H01M50/406—Moulding; Embossing; Cutting
    • 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
    • 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)
  • Secondary Cells (AREA)

Abstract

The invention relates to the field of battery diaphragms, in particular to a trimming treatment method for a lithium battery diaphragm after heat setting. The technical problems to be solved are as follows: the trimming treatment method after the heat setting of the lithium battery diaphragm is provided. The technical scheme of the invention is as follows: the trimming processing method after the heat setting of the lithium battery diaphragm adopts the following processing equipment, wherein the processing equipment comprises a double comprehensive stretching system, a shrinkage trimming system, a trimming collecting system, a first electric sliding rail and a second electric sliding rail; the mounting bottom plate is connected with the containing box. The invention realizes the effects that the formed lithium battery diaphragm is uniformly stretched, automatically heat-shrunk, and secondarily heat-shrunk the edge part which is not parallel to shrinkage after heat shrinkage, so that the edge which is not parallel to shrinkage is subjected to secondary shrinkage adjustment, and the edge part of the battery diaphragm after shrinkage is trimmed.

Description

Trimming treatment method for heat-set lithium battery diaphragm
Technical Field
The invention relates to the field of battery diaphragms, in particular to a trimming treatment method for a lithium battery diaphragm after heat setting.
Background
In the construction of lithium batteries, the separator is one of the critical inner layer components. The performance of the diaphragm determines the interface structure, internal resistance and the like of the battery, directly influences the capacity, circulation, safety performance and other characteristics of the battery, and the diaphragm with excellent performance plays an important role in improving the comprehensive performance of the battery. The separator has the main function of separating the positive electrode from the negative electrode of the battery, preventing the two electrodes from being contacted and short-circuited, and also has the function of passing electrolyte ions. The separator material is non-conductive, and its physicochemical properties have a great influence on the performance of the battery. The type of battery is different, and the separator used is also different. In the lithium battery system, since the electrolyte is an organic solvent system, a separator material resistant to an organic solvent is required, and a polyolefin porous film having a high strength and a thin film is generally used.
Currently, a lithium battery separator in the prior art is a thin film having a microporous structure. The semi-finished lithium battery diaphragm with the micropore structure is formed after biaxial stretching, heat setting treatment is needed to be carried out under a high-temperature environment, so that the heat shrinkage rate of the semi-finished lithium battery diaphragm is reduced, and therefore the finished lithium battery diaphragm with stable size is obtained.
Aiming at the problems, we provide a trimming treatment method after heat setting of a lithium battery diaphragm.
Disclosure of Invention
In order to overcome the lithium battery diaphragm heat setting in-process of prior art, lithium battery diaphragm is heated the back, the shrinkage of edge middle part is faster, in four right angle departments of lithium battery diaphragm, because four angles are connected with two limits, long limit department is because length is longer, consequently the unit area on the long limit direction is heated the heat less, and the minor face of lithium battery diaphragm is then the heat is great in the unit area, the shrinkage rate of minor face of lithium battery diaphragm is greater than the shrinkage rate in long limit position far away, the shrinkage in middle part that leads to the minor face is faster forms the recess, the edge of lithium battery diaphragm is not flush promptly, the shortcoming of unable use, the technical problem that solves is: the trimming treatment method after the heat setting of the lithium battery diaphragm is provided.
The technical scheme of the invention is as follows: the trimming processing method after the heat setting of the lithium battery diaphragm adopts the following processing equipment, wherein the processing equipment comprises an installation bottom plate, a storage box, a support column, an installation frame plate, a double comprehensive stretching system, a shrinkage trimming system, a trimming collecting system, a lower heating plate, a first lifting electric sliding column, an upper heating plate, a second lifting electric sliding column, a first electric sliding rail and a second electric sliding rail; the mounting bottom plate is connected with the storage box; welding the upper part of the mounting bottom plate with the support column; welding the upper part of the support column with the mounting frame plate; the upper part of the mounting frame plate is connected with a double comprehensive stretching system; the upper part of the mounting frame plate is connected with a shrinkage trimming system; the upper part of the mounting bottom plate is connected with a trimming collecting system; the upper part of the mounting frame plate is connected with the lower heating plate; the upper part of the mounting frame plate is connected with a first lifting electric sliding column; the upper heating plate is in sliding connection with the first lifting electric sliding column; the second lifting electric sliding column above the mounting frame plate is connected; the second lifting electric sliding column is connected with the shrinkage trimming system; the first electric sliding rail above the mounting frame plate is connected through bolts; the first electric sliding rail is in sliding connection with the double comprehensive stretching system; the second electric sliding rail above the mounting frame plate is connected through bolts; the second electric sliding rail is in sliding connection with the double comprehensive stretching system;
The trimming treatment method after the heat setting of the lithium battery diaphragm comprises the following steps:
step one: the method comprises the steps of uniformly stretching, namely fixing a lithium battery diaphragm to a double full-face stretching system, namely controlling the double full-face stretching system to perform double uniform stretching on the lithium battery diaphragm;
step two: baking, shrinking and shaping, namely after the lithium battery diaphragm is stretched by a double comprehensive stretching system, spreading the lithium battery diaphragm on the top surface of the lower heating plate, controlling four first lifting electric sliding columns to drive the upper heating plate to move downwards to contact with the lithium battery diaphragm on the top surface of the lower heating plate, and controlling the lithium battery diaphragm to start heating and shrinking;
step three: after the lithium battery diaphragm is heated by the lower heating plate and the upper heating plate, fixing the lithium battery diaphragm to a shrinkage trimming system, namely controlling the shrinkage trimming system to carry out trimming on the lithium battery diaphragm;
step four: trimming, namely after the shrinkage trimming system finishes trimming the lithium battery diaphragm, fixing and tiling the lithium battery diaphragm again in a trimming collecting system, and controlling the trimming collecting system to trim, separate and collect the lithium battery diaphragm.
In one embodiment, the dual full stretching system comprises a power motor, a first rotating shaft rod, a first driving wheel, a second driving wheel, a bearing frame plate, a first stretching mechanism, a second stretching mechanism, a third driving wheel, a second rotating shaft rod, a first bearing frame column, a first flat gear, a fourth driving wheel, a third rotating shaft rod, a second flat gear, a second bearing frame column, a fourth rotating shaft rod, a third flat gear and a fourth flat gear; the lower part of the power motor is connected with the mounting frame plate through bolts; the first rotating shaft rod is fixedly connected with the output shaft of the power motor; the axle center of the first driving wheel is fixedly connected with a first rotating shaft lever; the axle center of the second driving wheel is fixedly connected with the first rotating shaft rod; the bearing frame plate is rotationally connected with the first rotating shaft rod; the lower part of the bearing frame plate is connected with the mounting frame plate through bolts; the lower part of the first stretching mechanism is in sliding connection with the first electric sliding rail; the lower part of the first stretching mechanism is in sliding connection with the second electric sliding rail; the lower part of the second stretching mechanism is in sliding connection with the first electric sliding rail; the lower part of the second stretching mechanism is in sliding connection with a second electric sliding rail; the outer ring surface of the third driving wheel is in driving connection with the first driving wheel through a belt; the outer surface of the second rotating shaft rod is fixedly connected with a third driving wheel; the first bearing bracket column is rotationally connected with the second rotating shaft rod; the lower part of the first bearing frame column is connected with the mounting frame plate through bolts; the axle center of the first flat gear is fixedly connected with the second rotating shaft rod; the outer ring surface of the fourth driving wheel is in driving connection with the second driving wheel through a belt; the outer surface of the third rotating shaft rod is fixedly connected with a fourth driving wheel; the axle center of the second flat gear is fixedly connected with a third rotating shaft rod; the second bearing frame column is rotationally connected with the third rotating shaft rod; the lower part of the second bearing frame column is connected with the mounting frame plate through bolts; the fourth rotating shaft rod is rotationally connected with the second bearing frame column; the axle center of the third flat gear is fixedly connected with a fourth rotating shaft rod; the third flat gear is meshed with the second flat gear; the axle center of the fourth flat gear is fixedly connected with a fourth rotating shaft rod.
In one embodiment, the shrinkage trimming system comprises a first mounting frame plate, a first edge positioning shrinkage mechanism, a second edge positioning shrinkage mechanism, a fixed platen, a first fixed slat, a second fixed slat, a first gradual change type heating plate and a second gradual change type heating plate; the first mounting frame plate is in sliding connection with the second lifting electric sliding column; the first edge positioning and shrinking mechanism is in bolt connection with the first mounting frame plate; the second edge positioning and shrinking mechanism is connected with the first mounting frame plate through bolts; the lower part of the fixed bedplate is connected with the mounting frame plate through bolts; the first fixed slat is spliced with the fixed bedplate; the second fixed slat is spliced with the fixed bedplate; the first gradual change type heating plate is connected with the mounting frame plate; the second gradual change type heating plate is connected with the mounting frame plate.
In one embodiment, the trimming collecting system comprises a mounting portal frame, a cross telescopic lifting frame, a second mounting frame plate, a first electric push rod, a first cutter bar, a second electric push rod, a third electric push rod, a second cutter bar, a fourth electric push rod, a first inclined blanking canal plate, a second inclined blanking canal plate, a collecting basket, a connecting mounting column and a flattening plate; the portal frame is mounted and connected with the cross telescopic lifting frame through bolts; the lower part of the mounting portal frame is connected with the mounting bottom plate through bolts; the lower part of the cross telescopic lifting frame is connected with a second installation frame plate through bolts; the first electric push rod is connected with the second installation frame plate; the first cutter bar is connected with the first electric push rod; the second electric push rod is connected with the second installation frame plate; the second electric push rod is connected with the first cutter bar; the third electric push rod is connected with the second installation frame plate; the second cutter bar is connected with a third electric push rod; the fourth electric push rod is connected with the second installation frame plate; the fourth electric push rod is connected with the second cutter bar; the first inclined blanking canal plate is fixedly connected with the mounting portal frame; the second inclined blanking canal plate is fixedly connected with the mounting portal frame; the lower part of the collecting basket is connected with the mounting bottom plate through bolts; the connecting mounting column is connected with the collecting basket through bolts; the flattening plate is fixedly connected with the connecting mounting column.
In one embodiment, the first stretching mechanism comprises a mounting integrated plate, a first mounting side column, a first electric rotating shaft connecting plate, a second electric rotating shaft connecting plate, a first hollow clamping column, a second hollow clamping column, a third electric rotating shaft connecting plate, a fourth electric rotating shaft connecting plate, a second mounting side column, a first mounting vertical frame, a first electric roller, a second electric roller, a bearing platen, a pressing slat, a fifth electric push rod, a sixth electric push rod, a friction stretching column, a first connecting sliding block, a first limiting sliding groove box, a first reset spring, a second connecting sliding block, a second limiting sliding groove box, a second reset spring, a fifth rotating shaft lever, a fifth flat gear, a first torsion spring rotating shaft seat, a first mounting frame column, a second torsion spring rotating shaft seat, a second mounting frame column, a half gear, a sixth rotating shaft lever, a sixth flat gear and a second mounting vertical frame; the lower part of the mounting integrated plate is in sliding connection with the first electric sliding rail; the lower part of the mounting integrated plate is in sliding connection with the second electric sliding rail; the lower part of the first mounting side column is fixedly connected with a mounting integrated board; the first electric rotating shaft connecting plate is connected with the first mounting side column; the second electric rotating shaft connecting plate is connected with the first mounting side column; the first hollow clamping column is connected with a first electric rotating shaft connecting plate; the second hollow clamping column is connected with a second electric rotating shaft connecting plate; the third electric rotating shaft connecting plate is connected with the first hollow clamping column; the fourth electric rotating shaft connecting plate is connected with the second hollow clamping column; the lower part of the second mounting side column is fixedly connected with a mounting integrated board; the second mounting side column is connected with a third electric rotating shaft connecting plate; the second mounting side column is connected with a fourth electric rotating shaft connecting plate; the first mounting mullion is fixedly connected with the second mounting side column; the first mounting mullion is fixedly connected with the first mounting side column; the first electric roller is connected with the first installation mullion; the second electric roller is connected with a second installation vertical frame; the lower part of the bearing bedplate is fixedly connected with the mounting integrated board; a pressing strip plate is arranged above the bearing platen; the lower part of the fifth electric push rod is connected with the layering plate; the fifth electric push rod is connected with the first mounting vertical frame; the lower part of the sixth electric push rod is connected with the layering plate; the sixth electric push rod is connected with the first mounting vertical frame; a friction stretching column is arranged above the bearing bedplate; the first connecting sliding block is fixedly connected with the friction stretching column; the first limiting chute box is in sliding connection with the first connecting sliding block; the first reset spring is connected with the first limit chute box; the first reset spring is connected with the first connecting sliding block; the second connecting sliding block is fixedly connected with the friction stretching column; the second limiting chute box is in sliding connection with the second connecting sliding block; the second reset spring is connected with the second limit chute box; the second reset spring is connected with the second connecting sliding block; the fifth rotating shaft rod is fixedly connected with the second limiting slide groove box; the fifth rotating shaft rod is fixedly connected with the first limit chute box; the axle center of the fifth flat gear is fixedly connected with a fifth rotating shaft rod; the first torsion spring rotating shaft seat is connected with a fifth rotating shaft rod; the first mounting frame column is connected with the first torsion spring rotating shaft seat; the lower part of the first mounting frame column is fixedly connected with a mounting integrated board; the second torsion spring rotating shaft seat is connected with a fifth rotating shaft rod; the second mounting frame column is connected with a second torsion spring rotating shaft seat; the lower part of the second mounting frame column is fixedly connected with a mounting integrated board; the axle center of the half gear is meshed with the fifth flat gear; the outer surface of the sixth rotating shaft rod is fixedly connected with the half gear; the sixth rotating shaft rod is rotationally connected with the second mounting frame column; the sixth rotating shaft rod is rotationally connected with the first mounting frame column; the axle center of the sixth flat gear is fixedly connected with a sixth rotating shaft rod; the second mounting mullion is fixedly connected with the second mounting side column; the second installation mullion is fixedly connected with the first installation side column.
In one embodiment, the first edge positioning and shrinking mechanism comprises a mounting cross bar, a first mounting vertical bar, a first limiting sliding column, a first sliding connection seat plate, a first electric expansion plate, an elastic bending bar, a second mounting vertical bar, a second limiting sliding column, a second sliding connection seat plate, a second electric expansion plate, an inner sleeve elastic bending bar and an outer elastic sleeve; the upper part of the mounting cross rod is connected with the first mounting frame plate through bolts; the first installation vertical rod is fixedly connected with the installation cross rod; the first limiting sliding column is connected with a first installation vertical rod through bolts; the first sliding connection seat plate is in sliding connection with the first limiting sliding column; the first electric expansion plate is connected with the first sliding connection seat plate; the elastic bending strip is connected with the first electric expansion plate; the second installation vertical rod is fixedly connected with the installation cross rod; the second limiting sliding column is connected with a second installation vertical rod through bolts; the second sliding connection seat board is in sliding connection with the second limiting sliding column; the second electric expansion plate is connected with the second sliding connection seat plate; the second electric expansion plate is connected with the elastic bending strip; the elastic bending rod of the inner sleeve is sleeved with the second installation vertical rod; the elastic bending rod of the inner sleeve is sleeved with the first installation vertical rod; the inner side of the outer elastic sleeve is sleeved with the inner sleeve elastic bending rod.
In one embodiment, the fixed platen is internally provided with a cavity and is provided with a water inlet nozzle and a water outlet nozzle.
In one embodiment, the collection basket sidewall is provided with an atomizing spray tube.
In one embodiment, the bottom of the first hollow pinch column and the top of the second hollow pinch column are both provided with rubber pads.
The invention has the beneficial effects that: (1) In order to solve the problems that in the heat setting process of the lithium battery diaphragm in the prior art, the middle part of the edge of the lithium battery diaphragm is contracted fast after being heated, and at four right angles of the lithium battery diaphragm, because the four angles are connected with two sides, the long side is longer in length, the unit area of the long side is heated less, and the short side of the lithium battery diaphragm is heated more in unit area, namely the contraction rate of the short side of the lithium battery diaphragm is far greater than the contraction rate of the long side, so that the middle part of the short side is contracted fast to form a concave, namely the edge of the lithium battery diaphragm is not flush and cannot be put into use;
(2) The method comprises the steps of designing a double full-face stretching system, a shrinkage trimming system and a trimming collecting system, firstly fixing a lithium battery diaphragm to the double full-face stretching system when the double full-face stretching system is used, namely controlling the double full-face stretching system to stretch the lithium battery diaphragm in a double uniform mode, after the double full-face stretching system stretches the lithium battery diaphragm, flatly paving the lithium battery diaphragm on the top surface of a lower heating plate, then controlling four first lifting electric sliding columns to drive an upper heating plate to move downwards to contact the lithium battery diaphragm on the top surface of the lower heating plate, then controlling the upper heating plate and the lower heating plate to start to shrink, fixing the lithium battery diaphragm to the shrinkage trimming system after the lower heating plate and the upper heating plate heat the lithium battery diaphragm, then controlling three groups of second lifting electric sliding columns to drive the shrinkage trimming system to descend, namely controlling the shrinkage trimming system to shrink edges of the lithium battery diaphragm, after the shrinkage trimming system completes edge shrinking of the lithium battery diaphragm, fixing the lithium battery diaphragm on the trimming collecting system again, and controlling the trimming collecting system to separate and collect edges of the lithium battery diaphragm;
(3) The automatic heat setting treatment after the lithium battery diaphragm is formed is realized, the formed lithium battery diaphragm is uniformly stretched, the automatic heat shrinkage treatment is carried out, the edge part which is not flush in shrinkage is subjected to secondary heat shrinkage after heat shrinkage, the edge which is not flush in shrinkage is subjected to secondary shrinkage adjustment, and finally the edge part of the battery diaphragm after shrinkage is trimmed, so that the effect of the flush lithium battery diaphragm is obtained.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of a dual full stretch system according to the present invention;
FIG. 3 is a schematic perspective view of a retractable trimming system according to the present invention;
FIG. 4 is a schematic perspective view of the trimming and collecting system of the present invention;
FIG. 5 is a schematic view of a first portion of a trim collection system according to the present invention;
FIG. 6 is a first perspective view of a first stretching mechanism according to the present invention;
FIG. 7 is a second perspective view of the first stretching mechanism of the present invention;
FIG. 8 is a third perspective view of the first stretching mechanism of the present invention;
FIG. 9 is a schematic view of a fourth perspective of the first stretching mechanism of the present invention;
fig. 10 is a schematic perspective view of a first edge positioning and shrinking mechanism according to the present invention.
Marked in the figure as: 1_mounting floor, 2_storage box, 3_support column, 4_mounting frame plate, 5_double full tension system, 6_shrinkage trimming system, 7_trim collection system, 8_lower heating plate, 9_first lifting electric slide, 10_upper heating plate, 11_second lifting electric slide, 12_first electric slide, 13_second electric slide, 501_power motor, 502_first spindle shaft, 503_first drive wheel, 504_second drive wheel, 505_bearing frame plate, 506_first tension mechanism, 507_second tension mechanism, 508_third drive wheel, 509_second spindle shaft, 5010_first bearing frame post, 5011_first flat gear, 5012_fourth drive wheel, 5013_third spindle shaft, 5014_second flat gear, 5015_second bearing frame post, 5016_fourth spindle shaft, 5017_third flat gear, 5018_fourth flat gear, 601_first mounting frame plate, 602 first edge positioning and shrinking mechanism, 603 second edge positioning and shrinking mechanism, 604 fixed platen, 605 first fixed platen, 606 second fixed platen, 607 first gradual change type heating plate, 608 second gradual change type heating plate, 701 mounting portal frame, 702 cross telescopic lifting frame, 703 second mounting frame plate, 704 first electric push rod, 705 first cutting bar, 706 second electric push rod, 707 third electric push rod, 708 second cutter bar, 709 fourth electric push rod, 7010 first inclined blanking channel plate, 7011 second inclined blanking channel plate, 7012 collecting basket, 7013 connection mounting column, 7014 flattening plate, 50601 mounting collecting plate, 50602 first mounting side column, 50603 first electric rotating shaft connecting plate, 50604 second electric rotating shaft connecting plate, 50605 first hollow clamping column, 50606 second hollow clamping column, 50607_third electric spindle connection plate, 50608_fourth electric spindle connection plate, 50609_second mounting jamb, 50610_first mounting mullion, 50611 _first electric roller, 50612_second electric roller, 50613_load-bearing platen, 50614 _compression slat, 50615_fifth electric push rod, 50616 _sixth electric push rod, 50617 _friction pull column, 50618 _first connection slider, 50619 _first limit slide box, 50620 _first return spring, 50621_second connection slider, 50622 _second limit slide box, 50623 _second return spring, 50624_fifth rotary shaft, 50625 _fifth flat gear, 50626 _first torsion spring rotary shaft seat, 50627 _first mounting bracket post, 50628 _second torsion spring rotary shaft seat, 50629 _second mounting bracket post, 50630 _half gear, 50631 _sixth rotary, 50632_sixth flat gear, 50621_second vertical frame 60101_second mounting bracket, 60101_second vertical frame, 60101_second limit slide box, 50623 _second return spring, 50624_fifth rotary shaft, 50625 _fifth flat gear, 50626 _first torsion spring rotary shaft seat, 50627 _first mounting bracket post, 50628 _second torsion spring rotary shaft seat, 50629 _second mounting bracket post, 50630 _half gear, 50631 _sixth rotary, 50632_sixth flat gear, 50633_second vertical frame, 60103_second mounting bracket, 60105_second connection sliding frame, 60107_second elastic frame, 60107_second frame, 60107_first elastic frame, 60107_first frame, and straight frame, and elastic frame, and the first frame.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Example 1
1-10, the trimming processing method after heat setting of the lithium battery diaphragm adopts processing equipment, wherein the processing equipment comprises an installation base plate 1, a storage box 2, a support column 3, an installation frame plate 4, a double comprehensive stretching system 5, a shrinkage trimming system 6, a trimming collecting system 7, a lower heating plate 8, a first lifting electric slide column 9, an upper heating plate 10, a second lifting electric slide column 11, a first electric slide rail 12 and a second electric slide rail 13; the mounting bottom plate 1 is connected with the storage box 2; the upper part of the mounting bottom plate 1 is welded with the support column 3; the upper part of the support column 3 is welded with the mounting frame plate 4; the upper part of the mounting frame plate 4 is connected with a double full-stretching system 5; the upper part of the mounting frame plate 4 is connected with a shrinkage trimming system 6; the upper part of the mounting bottom plate 1 is connected with a trimming collecting system 7; the upper part of the mounting frame plate 4 is connected with a lower heating plate 8; the upper part of the mounting frame plate 4 is connected with a first lifting electric sliding column 9; the upper heating plate 10 is in sliding connection with the first lifting electric sliding column 9; the second lifting electric sliding column 11 above the mounting frame plate 4 is connected; the second lifting electric sliding column 11 is connected with the shrinkage trimming system 6; the first electric sliding rail 12 above the mounting frame plate 4 is connected through bolts; the first electric slide rail 12 is in sliding connection with the double full-face stretching system 5; the second electric sliding rail 13 above the mounting frame plate 4 is connected through bolts; the second electric sliding rail 13 is in sliding connection with the double full-face stretching system 5;
The trimming treatment method after the heat setting of the lithium battery diaphragm comprises the following steps:
step one: the lithium battery diaphragm is fixed to a double full-face stretching system 5, namely the double full-face stretching system 5 is controlled to carry out double full-face stretching on the lithium battery diaphragm;
step two: baking, shrinking and shaping, namely after the lithium battery diaphragm is stretched by the double comprehensive stretching system 5, spreading the lithium battery diaphragm on the top surface of the lower heating plate 8, controlling four first lifting electric sliding columns 9 to drive the upper heating plate 10 to move downwards to contact with the lithium battery diaphragm on the top surface of the lower heating plate 8, and controlling the lithium battery diaphragm to start to shrink by heating;
step three: after the lithium battery diaphragm is heated by the lower heating plate 8 and the upper heating plate 10, fixing the lithium battery diaphragm to the shrinkage trimming system 6, namely controlling the shrinkage trimming system 6 to carry out trimming on the lithium battery diaphragm;
step four: trimming, namely after the shrinkage trimming system 6 finishes trimming the lithium battery diaphragm, fixedly tiling the lithium battery diaphragm again at the trimming collecting system 7, and controlling the trimming collecting system 7 to trim, separate and collect the lithium battery diaphragm.
Working principle: when the equipment of trimming processing method after using lithium battery diaphragm heat setting, stable fixed this equipment, and external power, but manual controller control equipment operation on opening mounting plate 4, at this moment at first fix lithium battery diaphragm to dual comprehensive stretching system 5, control dual comprehensive stretching system 5 and carry out dual evenly stretching to the lithium battery diaphragm, after dual comprehensive stretching system 5 accomplishes lithium battery diaphragm stretching, lay the lithium battery diaphragm on the top surface of lower hot plate 8 again, then control four first lift electric slide column 9 and drive upward heating plate 10 downward movement and the lithium battery diaphragm contact of lower hot plate 8 top surface this moment, then control it and begin the shrink of heating, after lower hot plate 8 and upward heating plate 10 are accomplished lithium battery diaphragm heating, fix lithium battery diaphragm to shrink trimming system 6, then control three group's second lift electric slide column 11 and drive shrink trimming system 6 position decline, promptly control shrink trimming system 6 carries out the limit to the lithium battery diaphragm, after shrink trimming system 6 is accomplished lithium battery diaphragm limit, at this moment, fix the lithium battery diaphragm again and lay down in side cut down and collect system 7, then control trimming and collect the lithium battery diaphragm and separate the lithium battery and realize that the shrink of flush and shrink the lithium battery is partly, the shrink is not carried out the shrink of lithium battery is carried out the shrink of flush and is partly after the shrink of lithium battery is finished, the shrink is cut off, the shrink and the trimming effect of shrink is completed.
The dual full stretching system 5 comprises a power motor 501, a first rotating shaft rod 502, a first driving wheel 503, a second driving wheel 504, a bearing frame plate 505, a first stretching mechanism 506, a second stretching mechanism 507, a third driving wheel 508, a second rotating shaft rod 509, a first bearing frame post 5010, a first flat gear 5011, a fourth driving wheel 5012, a third rotating shaft rod 5013, a second flat gear 5014, a second bearing frame post 5015, a fourth rotating shaft rod 5016, a third flat gear 5017 and a fourth flat gear 5018; the lower part of the power motor 501 is connected with the mounting frame plate 4 through bolts; the first rotating shaft rod 502 is fixedly connected with the output shaft of the power motor 501; the axle center of the first driving wheel 503 is fixedly connected with the first rotating shaft lever 502; the axle center of the second driving wheel 504 is fixedly connected with the first rotating shaft rod 502; the bearing frame plate 505 is rotatably connected with the first rotating shaft rod 502; the lower part of the bearing frame plate 505 is connected with the mounting frame plate 4 through bolts; the lower part of the first stretching mechanism 506 is in sliding connection with the first electric sliding rail 12; the lower part of the first stretching mechanism 506 is in sliding connection with the second electric sliding rail 13; the lower part of the second stretching mechanism 507 is in sliding connection with the first electric sliding rail 12; the lower part of the second stretching mechanism 507 is in sliding connection with the second electric sliding rail 13; the outer annular surface of the third driving wheel 508 is in driving connection with the first driving wheel 503 through a belt; the outer surface of the second rotating shaft lever 509 is fixedly connected with the third driving wheel 508; the first bearing bracket post 5010 is rotatably connected to the second rotation shaft 509; the lower part of the first bearing bracket column 5010 is connected with the mounting bracket plate 4 through bolts; the axle center of the first flat gear 5011 is fixedly connected with the second rotating shaft lever 509; the outer ring surface of the fourth driving wheel 5012 is in driving connection with the second driving wheel 504 through a belt; the outer surface of the third rotating shaft rod 5013 is fixedly connected with a fourth driving wheel 5012; the axle center of the second flat gear 5014 is fixedly connected with a third rotating shaft lever 5013; the second bearing bracket post 5015 is rotatably connected with the third rotating shaft lever 5013; the lower part of the second bearing frame post 5015 is connected with the mounting frame plate 4 through bolts; the fourth rotating shaft rod 5016 is rotatably connected with the second bearing bracket post 5015; the axle center of the third flat gear 5017 is fixedly connected with a fourth rotating shaft lever 5016; the third flat gear 5017 meshes with the second flat gear 5014; the fourth flat gear 5018 has an axis fixedly connected to the fourth rotating shaft lever 5016.
Firstly, the first electric slide rail 12 and the second electric slide rail 13 are controlled to drive the first stretching mechanism 506 and the second stretching mechanism 507 to be close to each other, then two sides of a lithium battery diaphragm are respectively fixed between the first stretching mechanism 506 and the second stretching mechanism 507, then a power motor 501 is controlled to be connected, then the power motor 501 drives the first rotating shaft rod 502 to rotate, then the first rotating shaft rod 502 drives the first driving wheel 503 and the second driving wheel 504 to rotate, then the first driving wheel 503 and the second driving wheel 504 respectively drive the third driving wheel 508 and the fourth driving wheel 5012 to rotate, then the third driving wheel 508 drives the second rotating shaft rod 509 to rotate, then the second rotating shaft rod 509 drives the first flat gear 5011 to rotate, further the first flat gear 5011 can drive the second stretching mechanism 507 to operate, meanwhile the second driving wheel 5012 is driven to rotate, then the fourth rotating shaft rod 5012 drives the third rotating shaft rod 5013 to rotate, further the third rotating shaft rod 5013 drives the second flat gear 4 to rotate, further the second flat gear 5014 drives the third flat gear 5017 to rotate, then the third flat gear 5017 drives the fourth flat gear 5016 to rotate, and then the fourth flat gear 5016 drives the fourth driving wheel 5016 to rotate, and the fourth flat gear 5018 to stretch the second stretching mechanism 506 to rotate, and the second stretching mechanism to evenly stretch the lithium battery diaphragm to rotate, thereby realizing that the second stretching mechanism is stretched by the second flat gear and the second stretching mechanism is stretched.
The shrinkage trimming system 6 comprises a first mounting frame plate 601, a first edge positioning shrinkage mechanism 602, a second edge positioning shrinkage mechanism 603, a fixed platen 604, a first fixed slat 605, a second fixed slat 606, a first gradual heating plate 607 and a second gradual heating plate 608; the first mounting frame plate 601 is in sliding connection with the second lifting electric slide column 11; the first edge positioning and shrinking mechanism 602 is in bolt connection with the first mounting frame plate 601; the second edge positioning and shrinking mechanism 603 is in bolt connection with the first mounting frame plate 601; the lower part of the fixed platen 604 is connected with the mounting frame plate 4 through bolts; the first fixed slat 605 is spliced with the fixed platen 604; the second fixed slat 606 is spliced with the fixed platen 604; the first gradual change type heating plate 607 is connected with the mounting frame plate 4; a second gradual change temperature heat generating plate 608 is connected to the mounting bracket plate 4.
After the double comprehensive stretching system 5 stretches the lithium battery diaphragm, the lithium battery diaphragm is paved on the top surface of the lower heating plate 8, then the four first lifting electric sliding columns 9 are controlled to drive the upper heating plate 10 to move downwards to be in contact with the lithium battery diaphragm on the top surface of the lower heating plate 8, then the heating shrinkage is controlled to begin, after the lower heating plate 8 and the upper heating plate 10 heat the lithium battery diaphragm, the lithium battery diaphragm is paved on the top surface of the fixed platen 604, the lithium battery diaphragm is fixed on the top surface of the fixed platen 604 through the first fixed lath 605 and the second fixed lath 606, at the moment, the three groups of second lifting electric sliding columns 11 are controlled to drive the first mounting frame plate 601 to move downwards, the first mounting frame plate 601 drives the first edge positioning shrinkage mechanism 602 and the second edge positioning shrinkage mechanism 603 to move downwards to be in contact with the two sides of the top surface of the battery diaphragm, at the same time, the first gradually changing temperature heating plate 607 and the second gradually changing temperature heating plate 608 are controlled to heat, at the moment, the temperature of the first gradually changing temperature heating plate 607 and the second gradually changing temperature changing plate 608 is gradually reduced from the middle to the two sides, the middle part of the lithium battery diaphragm is gradually shrunk to the same, the second edge of the lithium battery diaphragm is gradually shrinking the same, the lithium battery diaphragm is completely and the second edge is completely shrunk, and the lithium battery diaphragm is completely and the lithium is completely shrunk, and the lithium edge is completely and the same in the position.
The trimming collecting system 7 comprises a mounting portal frame 701, a cross telescopic lifting frame 702, a second mounting frame plate 703, a first electric push rod 704, a first cutter bar 705, a second electric push rod 706, a third electric push rod 707, a second cutter bar 708, a fourth electric push rod 709, a first inclined blanking canal plate 7010, a second inclined blanking canal plate 7011, a collecting basket 7012, a connecting mounting column 7013 and a flattening plate 7014; the mounting portal frame 701 is in bolt connection with the cross telescopic lifting frame 702; the lower part of the mounting portal frame 701 is connected with the mounting bottom plate 1 through bolts; the lower part of the cross telescopic lifting frame 702 is connected with a second mounting frame plate 703 through bolts; the first electric push rod 704 is connected with the second mounting frame plate 703; the first cutting bar 705 is connected with the first electric push rod 704; the second electric push rod 706 is connected with the second mounting frame plate 703; the second electric push rod 706 is connected with the first cutting bar 705; the third electric push rod 707 is connected to the second mounting frame plate 703; the second cutter bar 708 is connected with a third electric push rod 707; the fourth electric push rod 709 is connected with the second mounting frame plate 703; the fourth electric push rod 709 is connected with the second cutter bar 708; the first inclined blanking canal plate 7010 is fixedly connected with the mounting portal frame 701; the second inclined blanking canal 7011 is fixedly connected with the mounting portal frame 701; the lower part of the collecting basket 7012 is connected with the mounting bottom plate 1 through bolts; the connection mounting post 7013 is in bolt connection with the collection basket 7012; the flattening plate 7014 is fixedly connected with the connection mounting posts 7013.
After the contraction trimming system 6 finishes processing the lithium battery diaphragm, the lithium battery diaphragm is fixed to the top surface of the flattening plate 7014, then the cross telescopic lifting frame 702 is controlled to extend downwards to drive the second installation frame plate 703 to move downwards, the second installation frame plate 703 drives connected parts to move downwards, the first cutting strip 705 and the second cutting strip 708 move downwards to the top of the lithium battery diaphragm, the edge part of the lithium battery diaphragm is further cut off, then the first electric push rod 704, the second electric push rod 706, the third electric push rod 707 and the fourth electric push rod 709 are controlled to extend simultaneously, the first cutting strip 705 and the second cutting knife are respectively driven to move to the two sides to shift the cut edge part to be separated, the cut edge part falls from the top edge of the flattening plate 7014, and enters the inside of the collecting basket 7012 to be collected through the first inclined blanking canal plate 7010 and the second inclined blanking canal plate 7011, and separation and collection of the edge part of the lithium battery diaphragm are completed.
The first stretching mechanism 506 includes a mounting collecting plate 50601, a first mounting side column 50602, a first electric rotating shaft connecting plate 50603, a second electric rotating shaft connecting plate 50604, a first hollow clamping column 50605, a second hollow clamping column 50606, a third electric rotating shaft connecting plate 50607, a fourth electric rotating shaft connecting plate 50608, a second mounting side column 50609, a first mounting mullion 50610, a first electric roller 50611, a second electric roller 50612, a bearing platen 50613, a layering plate 50614, a fifth electric push rod 50615, a sixth electric push rod 50616, a friction stretching column 50617, a first connecting slider 50618, a first limiting chute box 50619, a first return spring 50620, a second connecting slider 50621, a second limiting chute box 50622, a second return spring 50623, a fifth rotating shaft 50624, a fifth flat gear 50625, a first torsion spring rotating shaft seat 50626, a first mounting frame column 50627, a second torsion spring rotating shaft seat 50628, a second mounting frame column 3723, a sixth gear 50630, a sixth gear 37633, and a sixth rotating shaft 50632; the lower part of the installation collecting plate 50601 is in sliding connection with the first electric sliding rail 12; the lower part of the installation collecting plate 50601 is in sliding connection with the second electric sliding rail 13; the lower part of the first mounting side column 50602 is fixedly connected with a mounting collecting plate 50601; the first electric rotating shaft connecting plate 50603 is connected with the first mounting side post 50602; the second motorized spindle connection plate 50604 is connected to the first mounting jamb 50602; the first hollow clamp column 50605 is connected with the first electric rotating shaft connecting plate 50603; the second hollow clamp column 50606 is connected with a second electric rotating shaft connecting plate 50604; the third electric rotating shaft connecting plate 50607 is connected with the first hollow clamping column 50605; the fourth motorized spindle connection plate 50608 is connected to the second hollow grip 50606; the lower part of the second installation side column 50609 is fixedly connected with an installation collecting plate 50601; the second mounting jamb 50609 is connected to a third motorized spindle connection 50607; the second mounting jamb 50609 is connected to a fourth motorized spindle connection 50608; the first mounting mullion 50610 is fixedly connected with the second mounting jamb 50609; the first mounting mullion 50610 is fixedly connected with the first mounting jamb 50602; first motorized roller 50611 is connected to first mounting mullion 50610; the second motorized roller 50612 is connected to a second mounting mullion 50633; the lower part of the bearing platen 50613 is fixedly connected with the installation collecting plate 50601; a layering plate 50614 is arranged above the bearing platen 50613; the lower part of the fifth electric push rod 50615 is connected with a layering plate 50614; the fifth motor-push rod 50615 is connected to the first mounting mullion 50610; the lower part of the sixth electric push rod 50616 is connected with a layering plate 50614; sixth electric putter 50616 is connected to first mounting mullion 50610; a friction stretching column 50617 is arranged above the bearing platen 50613; the first connecting sliding block 50618 is fixedly connected with the friction stretching column 50617; the first limit chute box 50619 is in sliding connection with the first connecting slide 50618; the first return spring 50620 is connected with the first limit chute box 50619; the first return spring 50620 is connected with the first connecting slider 50618; the second connecting sliding block 50621 is fixedly connected with the friction stretching column 50617; the second limit chute box 50622 is in sliding connection with the second connecting sliding block 50621; the second return spring 50623 is connected to the second limit chute 50622; the second return spring 50623 is connected with the second connecting sliding block 50621; the fifth rotating shaft 50624 is fixedly connected with the second limit chute box 50622; the fifth rotating shaft 50624 is fixedly connected with the first limit chute box 50619; the axle center of the fifth flat gear 50625 is fixedly connected with a fifth rotating shaft 50624; the first torsion spring pivot base 50626 is connected to the fifth pivot rod 50624; the first mounting post 50627 is connected to the first torsion spring pivot mount 50626; the lower part of the first mounting frame column 50627 is fixedly connected with a mounting collecting plate 50601; the second torsion spring pivot base 50628 is connected to the fifth pivot rod 50624; the second mounting post 50629 is connected to the second torsion spring pivot mount 50628; the lower part of the second mounting frame column 50629 is fixedly connected with a mounting collecting plate 50601; the axle center of the half gear 50630 is meshed with the fifth flat gear 50625; the outer surface of the sixth rotating shaft rod 50631 is fixedly connected with the half gear 50630; the sixth rotating shaft rod 50631 is rotatably connected with the second mounting frame column 50629; the sixth rotating shaft rod 50631 is rotatably connected with the first mounting frame column 50627; the axle center of the sixth flat gear 50632 is fixedly connected with a sixth rotating shaft rod 50631; the second mounting mullion 50633 is fixedly connected with the second mounting jamb 50609; the second mounting mullion 50633 is fixedly secured to the first mounting jamb 50602.
Firstly, the first electric slide rail 12 and the second electric slide rail 13 are controlled to drive the first stretching mechanism 506 to move towards the direction of the second stretching mechanism 507, when the first stretching mechanism is to be moved to a proper position, the first electric rotating shaft connecting plate 50603, the second electric rotating shaft connecting plate 50604, the third electric rotating shaft connecting plate 50607 and the fourth electric rotating shaft connecting plate 50608 are controlled to synchronously rotate, namely, the first hollow clamping column 50605 and the second hollow clamping column 50606 are driven to respectively rotate upwards and downwards to open, then one side of the lithium battery diaphragm is stretched into a space between the first hollow clamping column 50605 and the second hollow clamping column 50606, then the first electric rotating shaft connecting plate 50603, the second electric rotating shaft connecting plate 50604, the third electric rotating shaft connecting plate 50607 and the fourth electric rotating shaft connecting plate 50608 are controlled to synchronously reversely rotate, and then one side of the lithium battery diaphragm is clamped and fixed, and the second stretching mechanism 507 is operated in the same way, and then the first electric slide rail 12 and the second electric slide rail 13 are controlled to drive the first stretching mechanism 506 and the second stretching mechanism 507 to move in opposite directions at the same time, and then the lithium battery diaphragm is stretched, after the primary stretching is completed, the first hollow clamping column 50605 and the second hollow clamping column 50606 are controlled to open, and simultaneously the second stretching mechanism 507 is controlled to loosen the other side, the unstretched parts of the two sides of the lithium battery diaphragm are loosened, and two air cylinders are arranged on one side, close to the second electric roller 50612, of the lower part of the second hollow clamping column 50606, and are controlled to be communicated with the two air cylinders to blow upwards, then the first electric slide rail 12 and the second electric slide rail 13 are controlled to drive the first stretching mechanism 506 and the second stretching mechanism 507 to be close to each other at the same time, and then the lithium battery diaphragm between the first hollow clamping column 50605 and the second hollow clamping column 50606 extends to one side of the first electric roller 50611 and the second electric roller 50612 under the action of wind, then enters a gap between the first electric roller 50611 and the second electric roller 50612, then controls the first electric roller 50611 and the second electric roller 50612 to rotate, further controls the first electric roller 50611 and the second electric roller 50612 to convey the lithium battery diaphragm towards the direction close to the friction stretching column 50617, stops moving when the first stretching mechanism 506 moves to the position where the sixth flat gear 50632 is meshed with the fourth flat gear 5018, at the moment, the non-stretched part of the lithium battery diaphragm moves to the position below the friction stretching column 50617, at the moment, the boundary between the stretched part and the non-stretched part is positioned below the layering plate 50614, then controls the fifth electric push rod 50615 and the sixth electric push rod 50616 to stretch downwards, namely, the fifth electric push rod 50615 and the sixth electric push rod 50616 drive the layering plate 50614 to move downwards to press the stretched part and the non-stretched part of the lithium battery diaphragm on the top surface of the bearing platen 50613, at the moment, controls the power supply of the power motor 501 to be turned on, through a series of transmission, the fourth flat gear 5018 drives the sixth flat gear 50632 to rotate, then the sixth flat gear 50632 drives the sixth rotating shaft lever 50631 to rotate, and further the sixth rotating shaft lever 50631 drives the half gear 50630 to rotate, and the half gear 50630 drives the fifth flat gear 50625 to rotate, and then the fifth flat gear 50625 drives the fifth rotating shaft lever 50624 to rotate, and further the fifth rotating shaft lever 50624 drives the second limit chute box 50622 and the first limit chute box 50619 to rotate downwards, and further the first limit chute box 50619 and the second limit chute box 50622 drive the friction pull column 50617 to rotate downwards through the first connecting slide block 50618 and the second connecting slide block 50621, namely the friction pull column 50617 moves downwards to contact the surface of the lithium battery diaphragm at the top of the bearing 50613 at first time, and then moves continuously with the first limit chute box 50619 and the second limit chute box 50622, the lowest point of the friction stretching column 50617 is the top surface of the bearing platen 50613, so that the friction stretching column 50617 starts to drive the first connecting sliding block 50618 and the second connecting sliding block 50621 to slide inside the first limit sliding groove box 50619 and the second limit sliding groove box 50622 respectively, meanwhile, the movement of the first connecting sliding block 50618 and the second connecting sliding block 50621 compresses the first reset spring 50620 and the second reset spring 50623 respectively, further, the situation that the friction stretching column 50617 can be kept closely attached at all times in the movement process of the top surface of the bearing platen 50613 is ensured, the friction stretching column 50617 stretches the un-stretched part of the lithium battery diaphragm secondarily through friction force, and the second stretching mechanism 507 performs the same operation, so that the whole uniform stretching of the lithium battery diaphragm is completed.
The first edge positioning and shrinking mechanism 602 comprises a mounting cross bar 60101, a first mounting vertical bar 60102, a first limiting slide column 60103, a first sliding connection seat plate 60104, a first electric expansion plate 60105, an elastic bending bar 60106, a second mounting vertical bar 60107, a second limiting slide column 60108, a second sliding connection seat plate 60109, a second electric expansion plate 60110, an inner sleeve elastic bending rod 60111 and an outer elastic sleeve 60112; the upper part of the mounting cross bar 60101 is connected with the first mounting frame plate 601 through bolts; the first installation vertical rod 60102 is fixedly connected with the installation cross rod 60101; the first limit sliding column 60103 is connected with a first mounting vertical rod 60102 through bolts; the first sliding connection seat board 60104 is in sliding connection with the first limit sliding column 60103; the first electric expansion plate 60105 is connected with the first sliding connection seat plate 60104; the elastic bending strip 60106 is connected with the first electric expansion plate 60105; the second installation vertical rod 60107 is fixedly connected with the installation cross rod 60101; the second limit sliding column 60108 is connected with a second mounting vertical rod 60107 through bolts; the second sliding connection seat plate 60109 is in sliding connection with the second limit sliding column 60108; the second electric expansion plate 60110 is connected with the second sliding connection seat plate 60109; the second electric expansion plate 60110 is connected with the elastic bending strip 60106; the inner sleeve elastic bending rod 60111 is sleeved with the second mounting vertical rod 60107; the inner sleeve elastic bending rod 60111 is sleeved with the first mounting vertical rod 60102; the inner side of the outer elastic sleeve 60112 is sleeved with the inner sleeve elastic bending rod 60111.
The three groups of second lifting electric sliding columns 11 are controlled to drive the first installation frame plate 601 to descend, the first installation frame plate 601 drives the first edge positioning shrinkage mechanism 602 and the second edge positioning shrinkage mechanism 603 to move downwards to contact with two sides of the top surface of the battery diaphragm, at the moment, the first electric expansion plate 60105 and the second electric expansion plate 60110 are controlled to shrink synchronously, the first electric expansion plate 60105 and the second electric expansion plate 60110 respectively drive two sides of the elastic bending strip 60106 to move upwards, the middle part of the elastic bending strip 60106 is bent downwards, meanwhile, because the straight line distance between two ends of the elastic bending strip 60106 is shortened, the first electric expansion plate 60105 and the second electric expansion plate 60110 respectively drive the first sliding connection seat plate 60104 and the second sliding connection seat plate 60109 respectively to slide on the outer surfaces of the first limiting sliding column 60103 and the second limiting sliding column 60108 in opposite directions, in order to keep the stress balance, and then after the elastic bending bar 60106 is bent downwards, the part of the elastic bending bar 60106, which protrudes downwards, pushes down the middle parts of the inner sleeve elastic bending bar 60111 and the outer elastic sleeve 60112, namely, the middle parts of the inner sleeve elastic bending bar 60111 and the outer elastic sleeve 60112 are also bent downwards, and then the middle part of the edge of the lithium battery diaphragm is stressed greatly in the process of pressing the edge part of the lithium battery diaphragm below the outer elastic sleeve 60112, the stress near two sides is gradually reduced, meanwhile, the temperature of the first gradually-changing heating plate 607 and the second gradually-changing heating plate 608 is gradually reduced from the middle part to two sides, the shrinkage of the two sides of the edge of the lithium battery diaphragm is faster, the shrinkage of the middle part is slower, meanwhile, the outer elastic sleeve 60112 pressurizes the middle part of the edge part of the lithium battery diaphragm, the shrinkage amplitude of the second edge positioning shrinkage mechanism 603 performs the same operation.
The fixed platen 604 is internally provided with a cavity, and is provided with a water inlet nozzle and a water outlet nozzle.
The cold water inlet pipe and the cold water outlet pipe can be respectively connected through the water inlet pipe, so that the cavity inside the fixed platen 604 is filled with cold water, and the temperature of the position of the middle area of the fixed platen is reduced.
The collecting basket 7012 is provided with an atomizing spray pipe on its side wall.
So that the water mist is sprayed into the collecting basket 7012 through the atomizing spray pipe, and the lithium battery diaphragm is not bonded after being soaked in water, so that the lithium battery diaphragm is convenient to collect.
The bottom of the first hollow grip 50605 and the top of the second hollow grip 50606 are provided with rubber pads.
So as to increase the friction of the bottom of the first hollow grip 50605 and the second hollow grip 50606 against the lithium battery separator.
The embodiments described above are intended to provide those skilled in the art with a full range of modifications and variations to the embodiments described above without departing from the inventive concept thereof, and therefore the scope of the invention is not limited by the embodiments described above, but is to be accorded the broadest scope consistent with the innovative features recited in the claims.

Claims (8)

1. The trimming processing method after the heat setting of the lithium battery diaphragm adopts the following processing equipment, wherein the processing equipment comprises an installation base plate (1), a storage box (2) and a support column (3), and is characterized by further comprising an installation frame plate (4), a double comprehensive stretching system (5), a shrinkage trimming system (6), a trimming collecting system (7), a lower heating plate (8), a first lifting electric sliding column (9), an upper heating plate (10), a second lifting electric sliding column (11), a first electric sliding rail (12) and a second electric sliding rail (13); the mounting bottom plate (1) is connected with the storage box (2); the upper part of the mounting bottom plate (1) is welded with the support column (3); the upper part of the supporting column (3) is welded with the mounting frame plate (4); the upper part of the mounting frame plate (4) is connected with a double comprehensive stretching system (5); the upper part of the mounting frame plate (4) is connected with a shrinkage trimming system (6); the upper part of the mounting bottom plate (1) is connected with a trimming collecting system (7); the upper part of the mounting frame plate (4) is connected with a lower heating plate (8); the upper part of the mounting frame plate (4) is connected with a first lifting electric sliding column (9); the upper heating plate (10) is in sliding connection with the first lifting electric sliding column (9); a second lifting electric sliding column (11) above the mounting frame plate (4) is connected; the second lifting electric sliding column (11) is connected with the shrinkage trimming system (6); the first electric sliding rail (12) above the mounting frame plate (4) is connected through bolts; the first electric sliding rail (12) is in sliding connection with the double full-face stretching system (5); a second electric sliding rail (13) above the mounting frame plate (4) is connected through bolts; the second electric sliding rail (13) is in sliding connection with the double full-face stretching system (5);
The trimming treatment method after the heat setting of the lithium battery diaphragm comprises the following steps:
step one: the lithium battery diaphragm is fixed to a double full-face stretching system (5) at first, namely the double full-face stretching system (5) is controlled to carry out double full-face stretching on the lithium battery diaphragm;
step two: baking, shrinking and shaping, namely after the lithium battery diaphragm is stretched by a double comprehensive stretching system (5), spreading the lithium battery diaphragm on the top surface of a lower heating plate (8), controlling four first lifting electric sliding columns (9) to drive an upper heating plate (10) to move downwards to contact with the lithium battery diaphragm on the top surface of the lower heating plate (8), and controlling the lithium battery diaphragm to start heating and shrinking;
step three: after the lithium battery diaphragm is heated by the lower heating plate (8) and the upper heating plate (10), fixing the lithium battery diaphragm to the shrinkage trimming system (6), namely controlling the shrinkage trimming system (6) to perform trimming on the lithium battery diaphragm;
step four: trimming, namely after the shrinkage trimming system (6) finishes trimming the lithium battery diaphragm, fixedly tiling the lithium battery diaphragm again on the trimming collecting system (7), and controlling the trimming collecting system (7) to trim, separate and collect the lithium battery diaphragm;
The shrinkage trimming system (6) comprises a first mounting frame plate (601), a first edge positioning shrinkage mechanism (602), a second edge positioning shrinkage mechanism (603), a fixed platen (604), a first fixed slat (605), a second fixed slat (606), a first gradual heating plate (607) and a second gradual heating plate (608); the first mounting frame plate (601) is in sliding connection with the second lifting electric sliding column (11); the first edge positioning shrinkage mechanism (602) is in bolt connection with the first mounting frame plate (601); the second edge positioning and shrinking mechanism (603) is connected with the first mounting frame plate (601) through bolts; the lower part of the fixed bedplate (604) is connected with the mounting frame plate (4) through bolts; the first fixed slat (605) is spliced with the fixed bedplate (604); the second fixed slat (606) is spliced with the fixed bedplate (604); the first gradual change type heating plate (607) is connected with the mounting frame plate (4); the second gradual change type heating plate (608) is connected with the mounting frame plate (4); the temperatures of the first progressive heating plate (607) and the second progressive heating plate (608) gradually decrease from the middle to the two sides.
2. The method for trimming after heat setting of lithium battery separator according to claim 1, wherein the dual full-stretching system (5) comprises a power motor (501), a first rotating shaft lever (502), a first driving wheel (503), a second driving wheel (504), a bearing frame plate (505), a first stretching mechanism (506), a second stretching mechanism (507), a third driving wheel (508), a second rotating shaft lever (509), a first bearing frame post (5010), a first flat gear (5011), a fourth driving wheel (5012), a third rotating shaft lever (5013), a second flat gear (5014), a second bearing frame post (5015), a fourth rotating shaft lever (5016), a third flat gear (5017) and a fourth flat gear (5018); the lower part of the power motor (501) is connected with the mounting frame plate (4) through bolts; the first rotating shaft rod (502) is fixedly connected with the output shaft of the power motor (501); the axle center of the first driving wheel (503) is fixedly connected with the first rotating shaft lever (502); the axle center of the second driving wheel (504) is fixedly connected with the first rotating shaft lever (502); the bearing frame plate (505) is rotationally connected with the first rotating shaft rod (502); the lower part of the bearing frame plate (505) is connected with the mounting frame plate (4) through bolts; the lower part of the first stretching mechanism (506) is in sliding connection with the first electric sliding rail (12); the lower part of the first stretching mechanism (506) is in sliding connection with the second electric sliding rail (13); the lower part of the second stretching mechanism (507) is in sliding connection with the first electric sliding rail (12); the lower part of the second stretching mechanism (507) is in sliding connection with a second electric sliding rail (13); the outer ring surface of the third driving wheel (508) is in driving connection with the first driving wheel (503) through a belt; the outer surface of the second rotating shaft lever (509) is fixedly connected with the third driving wheel (508); the first bearing bracket column (5010) is rotationally connected with the second rotating shaft rod (509); the lower part of the first bearing bracket column (5010) is connected with the mounting bracket plate (4) through bolts; the axle center of the first flat gear (5011) is fixedly connected with the second rotating shaft lever (509); the outer ring surface of the fourth driving wheel (5012) is in driving connection with the second driving wheel (504) through a belt; the outer surface of the third rotating shaft rod (5013) is fixedly connected with a fourth driving wheel (5012); the axle center of the second flat gear (5014) is fixedly connected with a third rotating shaft lever (5013); the second bearing bracket column (5015) is rotationally connected with the third rotating shaft rod (5013); the lower part of the second bearing frame column (5015) is connected with the mounting frame plate (4) through bolts; the fourth rotating shaft rod (5016) is rotationally connected with the second bearing frame column (5015); the axle center of the third flat gear (5017) is fixedly connected with a fourth rotating shaft lever (5016); the third flat gear (5017) is meshed with the second flat gear (5014); the axle center of the fourth flat gear (5018) is fixedly connected with a fourth rotating shaft lever (5016).
3. The trimming method after heat setting of the lithium battery diaphragm, as claimed in claim 2, characterized in that the trimming collecting system (7) comprises a mounting portal frame (701), a cross telescopic lifting frame (702), a second mounting frame plate (703), a first electric push rod (704), a first cutting bar (705), a second electric push rod (706), a third electric push rod (707), a second cutting bar (708), a fourth electric push rod (709), a first inclined blanking canal plate (7010), a second inclined blanking canal plate (7011), a collecting basket (7012), a connecting mounting column (7013) and a flattening plate (7014); the mounting portal frame (701) is connected with the cross telescopic lifting frame (702) through bolts; the lower part of the mounting portal frame (701) is connected with the mounting bottom plate (1) through bolts; the lower part of the cross telescopic lifting frame (702) is connected with a second mounting frame plate (703) through bolts; the first electric push rod (704) is connected with the second mounting frame plate (703); the first cutter bar (705) is connected with the first electric push rod (704); the second electric push rod (706) is connected with the second mounting frame plate (703); the second electric push rod (706) is connected with the first cutter bar (705); the third electric push rod (707) is connected with the second mounting frame plate (703); the second cutter bar (708) is connected with a third electric push rod (707); the fourth electric push rod (709) is connected with the second mounting frame plate (703); the fourth electric push rod (709) is connected with the second cutter bar (708); the first inclined blanking canal plate (7010) is fixedly connected with the mounting portal frame (701); the second inclined blanking canal plate (7011) is fixedly connected with the mounting portal frame (701); the lower part of the collecting basket (7012) is connected with the mounting bottom plate (1) through bolts; the connecting mounting column (7013) is connected with the collecting basket (7012) through bolts; the flattening plate (7014) is fixedly connected with the connecting mounting column (7013).
4. The method for trimming after heat setting of lithium battery separator according to claim 3, wherein, the first stretching mechanism (506) comprises a mounting integrated plate (50601), a first mounting side post (50602), a first electric rotating shaft connecting plate (50603), a second electric rotating shaft connecting plate (50604), a first hollow clamping post (50605), a second hollow clamping post (50606), a third electric rotating shaft connecting plate (50607), a fourth electric rotating shaft connecting plate (50608), a second mounting side post (50609), a first mounting vertical frame (50610), a first electric roller (50611), a second electric roller (50612), a bearing platen (50613), a layering plate (50614), a fifth electric push rod (50615), a sixth electric push rod (50616), a friction stretching post (50617), a first connecting slide block (50618), a first limiting slide box (50619), a first reset spring (50620), a second connecting slide block (50621), a second limiting slide box (50622), a second reset spring (50623), a fifth rotating shaft (50624), a fifth flat gear (50625), a first torsion spring shaft seat (50626), a second rotating frame (3949), a sixth torsion spring (50630), a second rotating shaft seat (50630) and a sixth rotating shaft seat (50630); the lower part of the mounting integrated plate (50601) is in sliding connection with the first electric sliding rail (12); the lower part of the mounting integrated plate (50601) is in sliding connection with the second electric sliding rail (13); the lower part of the first mounting side column (50602) is fixedly connected with a mounting integrated plate (50601); the first electric rotating shaft connecting plate (50603) is connected with the first mounting side column (50602); the second electric rotating shaft connecting plate (50604) is connected with the first mounting side column (50602); the first hollow clamping column (50605) is connected with the first electric rotating shaft connecting plate (50603); the second hollow clamping column (50606) is connected with a second electric rotating shaft connecting plate (50604); the third electric rotating shaft connecting plate (50607) is connected with the first hollow clamping column (50605); the fourth electric rotating shaft connecting plate (50608) is connected with the second hollow clamping column (50606); the lower part of the second installation side column (50609) is fixedly connected with an installation integrated plate (50601); the second mounting side column (50609) is connected with a third electric rotating shaft connecting plate (50607); the second mounting side post (50609) is connected with a fourth electric rotating shaft connecting plate (50608); the first mounting mullion (50610) is fixedly connected with the second mounting jamb (50609); the first mounting mullion (50610) is fixedly connected with the first mounting side column (50602); the first motorized roller (50611) is connected with a first mounting mullion (50610); the second motorized roller (50612) is connected to a second mounting mullion (50633); the lower part of the bearing platen (50613) is fixedly connected with the mounting integrated board (50601); a pressing plate (50614) is arranged above the bearing platen (50613); the lower part of the fifth electric push rod (50615) is connected with the pressing plate (50614); the fifth electric push rod (50615) is connected with the first mounting mullion (50610); the lower part of the sixth electric push rod (50616) is connected with the pressing plate (50614); the sixth electric push rod (50616) is connected with the first mounting mullion (50610); a friction stretching column (50617) is arranged above the bearing bedplate (50613); the first connecting sliding block (50618) is fixedly connected with the friction stretching column (50617); the first limit chute box (50619) is in sliding connection with the first connecting sliding block (50618); the first return spring (50620) is connected with the first limit chute box (50619); the first return spring (50620) is connected with the first connecting sliding block (50618); the second connecting sliding block (50621) is fixedly connected with a friction stretching column (50617); the second limit chute box (50622) is in sliding connection with the second connecting sliding block (50621); the second return spring (50623) is connected with the second limit chute box (50622); the second return spring (50623) is connected with the second connecting sliding block (50621); the fifth rotating shaft lever (50624) is fixedly connected with the second limit chute box (50622); the fifth rotating shaft lever (50624) is fixedly connected with the first limit chute box (50619); the axle center of the fifth flat gear (50625) is fixedly connected with a fifth rotating shaft lever (50624); the first torsion spring rotating shaft seat (50626) is connected with the fifth rotating shaft lever (50624); the first mounting frame column (50627) is connected with the first torsion spring rotating shaft seat (50626); the lower part of the first mounting frame column (50627) is fixedly connected with a mounting integrated plate (50601); the second torsion spring rotating shaft seat (50628) is connected with the fifth rotating shaft lever (50624); the second mounting frame column (50629) is connected with a second torsion spring rotating shaft seat (50628); the lower part of the second mounting frame column (50629) is fixedly connected with a mounting integrated plate (50601); the axle center of the half gear (50630) is meshed with the fifth flat gear (50625); the outer surface of the sixth rotating shaft lever (50631) is fixedly connected with the half gear (50630); the sixth rotating shaft lever (50631) is rotationally connected with the second mounting frame column (50629); the sixth rotating shaft lever (50631) is rotationally connected with the first mounting frame column (50627); the axle center of the sixth flat gear (50632) is fixedly connected with a sixth rotating shaft lever (50631); the second mounting mullion (50633) is fixedly connected with the second mounting jamb (50609); the second mounting mullion (50633) is fixedly connected with the first mounting jamb (50602).
5. The method for trimming a lithium battery diaphragm after heat setting according to claim 4, wherein the first edge positioning and shrinking mechanism (602) comprises a mounting cross bar (60101), a first mounting vertical bar (60102), a first limiting slide column (60103), a first sliding connection seat plate (60104), a first electric telescopic plate (60105), an elastic bending strip (60106), a second mounting vertical bar (60107), a second limiting slide column (60108), a second sliding connection seat plate (60109), a second electric telescopic plate (60110), an inner sleeve elastic bending rod (60111) and an outer elastic sleeve (60112); the upper part of the mounting cross rod (60101) is connected with the first mounting frame plate (601) through bolts; the first mounting vertical rod (60102) is fixedly connected with the mounting cross rod (60101); the first limit sliding column (60103) is connected with the first installation vertical rod (60102) through bolts; the first sliding connection seat board (60104) is in sliding connection with the first limit sliding column (60103); the first electric expansion plate (60105) is connected with the first sliding connection seat plate (60104); the elastic bending strip (60106) is connected with the first electric expansion plate (60105); the second installation vertical rod (60107) is fixedly connected with the installation cross rod (60101); the second limit sliding column (60108) is connected with a second installation vertical rod (60107) through bolts; the second sliding connection seat board (60109) is in sliding connection with the second limit sliding column (60108); the second electric expansion plate (60110) is connected with the second sliding connection seat plate (60109); the second electric expansion plate (60110) is connected with the elastic bending strip (60106); the inner sleeve elastic bending rod (60111) is sleeved with the second mounting vertical rod (60107); the inner sleeve elastic bending rod (60111) is sleeved with the first mounting vertical rod (60102); the inner side of the outer elastic sleeve (60112) is sleeved with the inner sleeve elastic bending rod (60111).
6. The method for trimming after heat setting of a lithium battery separator according to claim 1, wherein a cavity is provided in the fixed platen (604), and a water inlet pipe orifice and a water outlet pipe orifice are provided.
7. A method for post heat setting trimming a lithium battery separator according to claim 3, wherein the side wall of the collecting basket (7012) is provided with an atomizing spray pipe.
8. The method for post heat setting and trimming a lithium battery separator according to claim 4, wherein rubber pads are provided at the bottom of the first hollow clamping column (50605) and at the top of the second hollow clamping column (50606).
CN202110568661.4A 2021-05-25 2021-05-25 Trimming treatment method for heat-set lithium battery diaphragm Active CN113471623B (en)

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CN114102335B (en) * 2021-12-09 2022-11-01 江西远大保险设备实业集团有限公司 Outward-opening side plate trimming device capable of automatically positioning
CN115189095B (en) * 2022-07-08 2024-01-12 界首市天鸿新材料股份有限公司 Three-layer co-extrusion diaphragm transverse stretching system of power lithium battery for high-power vehicle
CN117359920A (en) * 2023-12-07 2024-01-09 天津东皋膜技术有限公司 Wet process lithium battery diaphragm transverse drawing shrinkage shaping device

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