CN102723461B - Pole piece roller compression machine - Google Patents
Pole piece roller compression machine Download PDFInfo
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- CN102723461B CN102723461B CN201210221140.2A CN201210221140A CN102723461B CN 102723461 B CN102723461 B CN 102723461B CN 201210221140 A CN201210221140 A CN 201210221140A CN 102723461 B CN102723461 B CN 102723461B
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- roller
- pole piece
- oil circuit
- roll
- compression
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- 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
Abstract
The invention discloses a pole piece roller compression machine which comprises an unrolling mechanism, a delivery mechanism, a roller compression mechanism and a rolling mechanism. The roller compression mechanism comprises an upper compression roller and a lower compression roller which are oppositely arranged and a compression roller driving mechanism used for driving the upper compression roller and the lower compression roller to move relatively to conduct roller compression. The roller compression mechanism further comprises an inverse driving mechanism coupled to the upper compression roller and/ or the lower compression roller. The inverse driving mechanism controllably applies action force with direction opposite to the compression roller drawing close direction on the upper compression roller and/ or the lower compression roller to remove or weaken compression roller shock. The pole piece roller compression machine enables the two compression rollers to maintain stable in interval change, and avoids undesirable change in compression of pole pieces by rollers, so that the machine can improve roller compression quality and prolong service life of devices.
Description
Technical field
The present invention relates to battery pole piece making apparatus, especially a kind of for the pole piece having applied being carried out to the roll squeezer of roll-in.
Background technology
The preparation of lithium battery pole slice is generally first mixture of active material and various additives etc. to be coated on base material, base material after coating forms pole piece through roll-in, pole piece roll-forming process influence is to the uniformity of pole piece and thickness etc., and then affect the performance of battery, therefore having relatively high expectations to roll squeezer.Industry was never interrupted the research of this technology.
Chinese patent literature 200810054790.6 discloses a kind of hydraulic servo battery pole piece rolling mill, employing connects and depresses servo hydraulic cylinder on the bearing pedestal that pressure roller is installed, the bowed roller hydraulic cylinder of adjusting two roller gaps is installed in bearing pedestal outside at top roll and lower roll, realized the adjustment in gap between two rollers, but this structure easily produces vibrations when the pole piece of gap coating is carried out to roll-in, for example because existing, the thickness of the pole piece of gap coating changes, therefore the gap digit at pole piece will make two rollers have very large vibrations, thereby cannot realize up-down rollers pressure balance, affect pole piece roll-in quality, and the equipment that affects is used and the life-span.
Chinese patent literature 200520128637.5 is disclosed a kind of thickness-measuring apparatus for battery pole-piece rolling mill, adopts feed screw nut to drive the gage beam with digital dial gauge to move along pole piece Width, tests the one-tenth-value thickness 1/10 of several points to determine the thickness of pole piece.But this technology can not realize, pole piece is carried out to thickness measurement online, measure efficiency lower, and adopt digital dial gauge to get thickness measuring ready, fragile pole piece, affects battery quality.
In addition, existing warm-up mill generally adopts electric heating, and electric heating is inhomogeneous, and adopts the few of oil heating.Chinese patent literature 201010589992.8 is disclosed a kind of conduction oil heating roller, adopt roll shaft to add the oily heating arrangement of axle sleeve, on roll shaft excircle, be provided with the oil circuit that helicla flute forms, axle sleeve is sleeved on the excircle of roll shaft, oil circuit is two-way oil circuit, this kind of structure increased effective use width of roll shaft roll surface, but its oil circulation poor performance, and the structural rigidity that axle sleeve coordinates with roll shaft is poor compared with integrative-structure.
Summary of the invention
Main purpose of the present invention is for the deficiencies in the prior art, and a kind of pole piece roll squeezer is provided, and held stationary in the time of can making two rollers change in gap is avoided when roll-in pole piece, producing undesirable vibrations, to improve roll-in quality and service life of equipment.
Further aim of the present invention is to measure accurately, in real time and efficiently pole piece thickness, realizes the accurate control of roll-in, guarantees pole piece roll-in quality.
Further aim of the present invention is to improve the density of pole piece roll-in, and promotes oil circulation performance, reduces energy consumption.
For achieving the above object, the present invention is by the following technical solutions:
A kind of pole piece roll squeezer, comprise unreeling structure, conveying mechanism, roller press mechanism and rolling-up mechanism, described roller press mechanism comprises the upper pressure roller that is oppositely arranged and lower compression roller and for driving upper and lower pressure roller relative motion to implement the pressure roller driving mechanism of roll-in, also comprise the contrary driving mechanism that is coupled to described upper pressure roller and/or lower compression roller, described contrary driving mechanism controllably applies the active force of drawing close opposite direction with pressure roller to eliminate or to weaken pressure roller vibrations to upper pressure roller and/or lower compression roller.
Preferably, the contrary cylinder pressure of described contrary driving mechanism for adopting hydraulic-driven or air pressure to drive.
More preferably, described upper and lower pressure roller is oppositely arranged up and down, and described contrary driving mechanism comprises for described upper pressure roller being applied to the superinverse cylinder pressure of upward pressure and for described lower compression roller being applied to the subinverse cylinder pressure of downward pressure.
More preferably, described pressure roller driving mechanism comprises for driving two servomotors of described upper pressure roller lifting and for driving the hydraulic cylinder of described lower compression roller lifting, wherein said two servomotors are the synchronous two ends that drive described upper pressure roller respectively.
More preferably, on described, lower compression roller is that the oil that is provided with oil circuit adds hot-pressing roller, described pressure roller has oil supply system, recovery system and internal oil passages, described internal oil passages comprises center oil circuit and some groups of roll surface oil circuits, each is organized roll surface oil circuit and includes the first oblique oil circuit, the second oblique oil circuit and the axial oil circuit arranging near roll surface, conduction oil flows into tail end through the initiating terminal of described axial oil circuit, one end of described the first oblique oil circuit and described the second oblique oil circuit communicates with initiating terminal and the tail end of axial oil circuit respectively, described center oil circuit comprises center oilhole, plug and circulation oilhole, described plug tight fit embeds in the oilhole of described center, described circulation oilhole runs through in described plug, the other end of described the first oblique oil circuit and described the second oblique oil circuit is communicated with respectively with by the separated described center of described plug oil circuit, wherein said the second oblique oil circuit is communicated with described circulation oilhole by described center oilhole.
More preferably, described pressure roller comprises take described pressure roller shaft to 3 described axial oil circuits arranging on the same circumference as the center of circle, between each axial oil circuit, head and the tail are communicated with successively, conduction oil flows into the tail end of the 3rd axial oil circuit through the initiating terminal of the axial oil circuit of article one, described one end of described the first oblique oil circuit and described the second oblique oil circuit communicates with the initiating terminal of the axial oil circuit of article one and the tail end of the 3rd axial oil circuit respectively.
More preferably, described pressure roller comprise 10 groups that around the even circumferential of described pressure roller, arrange described in roll surface oil circuit.
More preferably, also comprise the autothreading tape mechanism that coordinates described roller press mechanism to arrange, described autothreading tape mechanism comprises chain, threading roller, S roller, threading bar and some threadings are crossed roller, described chain has two of being parallel to each other and each roller of pile warp and forms closed path, described threading roller drives rotation by motor, described chain is moved along described closed path, described threading bar is fixed between two chains, in the process moving at described chain, by described chain-driving, along chain path, moved, need the initiating terminal of the pole piece of roll-in to be fixed on described threading bar, preferably, described S roller is for heating the warm-up mill of pole piece.
More preferably, comprise online mechanism for measuring thick, described thickness measurement online mechanism comprises the first mechanism for measuring thick and the second mechanism for measuring thick that uses thickness measurement with laser, before described the first mechanism for measuring thick and described the second mechanism for measuring thick lay respectively at described roller press mechanism and after described roller press mechanism, described the first mechanism for measuring thick is for measuring the thickness of the front pole piece of roll-in, described the second mechanism for measuring thick is for measuring the thickness of pole piece after roll-in, the same point of pole piece before described the first mechanism for measuring thick and described the second mechanism for measuring thick are arranged to measure roll-in and after roll-in, can also after described the second mechanism for measuring thick, be provided for the 3rd mechanism for measuring thick of manual thickness measuring.
Preferably, also comprise tension control mechanism, automatic one or more in tape splicing mechanism, trimming material mechanism, brush dust mechanism, described tension control mechanism is for controlling the tension stability that is transferred pole piece, described automatic tape splicing mechanism is for being automatically directed to conveying mechanism by pole piece, described trimming material mechanism is for excised the unnecessary rim charge of pole piece before roll-in, and described brush dust mechanism for removing dust before roll-in.
The technique effect that the present invention is useful is:
According to the present invention, when roll-in is carried out in the driven relative motion of upper and lower pressure roller, the moment that the thickness of pole piece changes between upper and lower pressure roller, can control upper pressure roller and/or lower compression roller are applied and rolling direction opposite effect power (or being called for short contrary pressure), held stationary when two rollers are changed in gap, avoid producing undesirable vibrations when roll-in gap coating pole piece, thereby on to greatest extent, reach the roll-in of permanent gap and constant pressure roll-in, guarantee roll-in quality and service life of equipment.Preferably, can to upper and lower pressure roller, apply contrary pressure respectively, thereby more effectively avoid vibrations.
Further, same-point measurement pole piece thickness before roll-in and after roll-in, calculated thickness difference, has not only guaranteed pole piece roll-in quality accurately, has also realized the accurate control of roll-in.
Further, upper and lower pressure roller adopts the pressure roller of oil heating, and adopts aforesaid oil piping system, can obtain in roll-in homogeneous heating pole piece and have the pressure roller of good rigidity.The oil circuit design of this pressure roller can recycle conduction oil, and conserve energy, improves the density of pole piece roll-in.
Further, adopt aforesaid autothreading tape mechanism, reduced manual operation, guaranteed threading quality, make roll-in process convenient, fast.
The present invention is applicable to for example roll-in in lithium ion pole piece manufacturing process of various battery pole pieces.
Accompanying drawing explanation
The schematic diagram of a kind of embodiment of Fig. 1 pole piece roll squeezer of the present invention;
Tape threading apparatus schematic diagram in Fig. 2 an embodiment of the present invention;
Oily heated roll schematic diagram in Fig. 3 an embodiment of the present invention;
Oily heated roll sectional schematic diagram in Fig. 4 an embodiment of the present invention.
Embodiment
By reference to the accompanying drawings the present invention is described in further detail by the following examples.
Refer to Fig. 1, in an embodiment, pole piece roll squeezer can comprise unreeling structure 1, connecting gear, roller press mechanism 6, rolling-up mechanism 7, and wherein roller press mechanism 6 comprises upper pressure roller, lower compression roller, the contrary press mechanism can be movable relatively and is the driving mechanism that upper pressure roller and lower compression roller configure respectively.Contrary press mechanism can be hydraulic cylinder or cylinder, hereinafter referred to as contrary cylinder pressure.In some preferred embodiments, pole piece roll squeezer can also comprise tension control mechanism 2, automatic one or more in tape splicing mechanism 3, trimming material mechanism 4, brush dust mechanism 5.
The driving mechanism of roller press mechanism 6 can comprise at least 2 servomotors, at least 2 hydraulic cylinders and hydraulic system, upper pressure roller lifting described in wherein said driven by servomotor, and lower compression roller lifting described in described Driven by Hydraulic Cylinder.
Specifically, contrary cylinder pressure can be at least 8 contrary cylinder pressures, and for example, wherein 4 contrary cylinder pressures apply and upward pressure upper pressure roller, and other 4 contrary cylinder pressures apply downward pressure to described lower compression roller.
Described upper pressure roller and described lower compression roller can be oil and add hot-pressing roller, are wherein provided with oil circuit.
In a specific embodiment as shown in Figure 1, roller press mechanism 6 comprises pressure roller 61, lower compression roller 62, servomotor 63, hydraulic cylinder 64, contrary cylinder pressure 65 and hydraulic system, upper pressure roller 61 and lower compression roller 62 are oppositely arranged up and down, upper pressure roller 61 is controlled fast lifting by servomotor, servomotor comprises two, the synchronous two ends that drive upper pressure roller, lower compression roller 62 is controlled fast lifting by hydraulic cylinder 64, on, lower compression roller is controlled and is applied reversal interlocking relay by four contrary cylinder pressures 65 respectively, contrary cylinder pressure applies and upwards pressure upper pressure roller, contrary cylinder pressure applies downward pressure to lower compression roller, while preventing two nip variations, produce vibrations greatly, make the lifting when meeting gap variation of two pressure rollers steadily convenient.
Consult Fig. 1, pole piece roll squeezer can also comprise online mechanism for measuring thick.Thickness measurement online mechanism can comprise the first mechanism for measuring thick 8 and the second mechanism for measuring thick 9.The first mechanism for measuring thick 8 and the second mechanism for measuring thick 9 can be thickness measurement with laser, before laying respectively at roller press mechanism and after roller press mechanism, the first mechanism for measuring thick 8 is measured the thickness of the front pole piece of roll-in, the thickness of pole piece after the second mechanism for measuring thick 9 measurement roll-ins, the same point of pole piece before the first mechanism for measuring thick 8 and the second mechanism for measuring thick 9 are arranged to measure roll-in and after roll-in, thereby can be according to both formerly measured values, the thickness difference before and after the roll-in of accurate Calculation pole piece.Optionally, can also after the second mechanism for measuring thick 9, be provided for the 3rd mechanism for measuring thick 10 of manual thickness measuring.
Pole piece can adopt automatic or manual threading form through the crossing process of roller press mechanism 6.Consult Fig. 2, pole piece roll squeezer can also comprise autothreading tape mechanism 11.Autothreading tape mechanism 11 can comprise that chain 111, threading roller 112, S roller 113, threading bar 114 and some threadings cross roller.Chain 111 is provided with two of being parallel to each other and forms closed path through each roller, threading roller 112 drives rotation by motor, chain is moved along closed path, threading bar 114 is fixed between two chains, in the process that can move at chain, by chain-driving, along chain path, moved, need the initiating terminal of the pole piece of roll-in to be fixed on threading bar 114, pole piece drives the path threading along chain by threading bar.S roller can provide certain tension force to control, and S roller can be also warm-up mill, also can heat pole piece.
Consult Fig. 3 and Fig. 4, upper pressure roller 61 and lower compression roller 62 can be the pressure roller of the oil heating of good rigidly.Pressure roller has oil supply system, recovery system and internal oil passages.Wherein internal oil passages comprises center oil circuit and some groups of roll surface oil circuits, and each organizes the axial oil circuit 612 that roll surface oil circuit includes the first oblique oil circuit 611 of oblique oil circuit 610, second and arranges near roll surface.Axially oil circuit 612 is for example 3, between each axial oil circuit, by oil groove and connector head and the tail, be communicated with successively, conduction oil flows into the tail end of the 3rd axial oil circuit through the initiating terminal of the axial oil circuit of article one, one end of the first oblique oil circuit 610 and the second oblique oil circuit 611 communicates with the initiating terminal of the axial oil circuit of article one and the tail end of the 3rd axial oil circuit respectively, center oil circuit comprises center oilhole 613, plug 614, circulation oilhole 615, plug 614 embeds in center oilhole 613, circulation oilhole 615 is positioned at plug center, the other end of the first oblique oil circuit and the second oblique oil circuit is communicated with respectively with by the separated center of plug 614 oil circuit, wherein the second oblique oil circuit is communicated with circulation oilhole by center oilhole.
The flow through order of internal oil passages of the conduction oil of upper and lower pressure roller is: conduction oil enters center oilhole 613 through oil supply system, barrier effect due to plug 614, through the first oblique oil circuit 610, enter, enter again the wherein initiating terminal of an axial oil circuit, tail end by an other axial oil circuit after oil groove enters other 2 axial oil circuits flows out, enter the second oblique oil circuit, and enter center oilhole through the second oblique oil circuit, then by the circulation oilhole on plug, return to oil supply system circulating-heating pressure roller.
As shown in Figure 4, upper and lower pressure roller preferably respectively comprises 10 groups of roll surface oil circuits arranging along even circumferential, and each is organized roll surface oil circuit and is all communicated with center oil circuit.
The roll squeezer course of work of a specific embodiment is as follows:
Need the pole piece of roll-in to unreel at unreeling structure automatic deviation correction, through tension control mechanism, control tension stability, unnecessary rim charge excises in trimming material mechanism, through brush dust mechanism, remove the dust on pole piece surface, and by entering roller press mechanism after pole piece thickness before the first mechanism for measuring thick measurement roll-in, during roll-in, on, lower compression roller fast lifting keeps the constant or constant pressure in gap, and each provides reversal interlocking relay by 4 contrary cylinder pressures, keep lifting steady, after roll-in, the pole piece of the second mechanism for measuring thick after to roll-in carries out thickness measuring, control system is calculated itself and the thickness difference of thickness measuring for the first time, for operating personnel, observe, if desired can utilize the 3rd mechanism for measuring thick to carry out manual thickness measuring, stable tension rolling after thickness measuring completes.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For example, concerning realizing, reduce gap, weaken vibrations, a pressure roller is implemented to contrary pressure-controlled and can reach its effect.Again for example, in the present invention, alleged " upper pressure roller " and " lower compression roller " do not mean that two pressure rollers necessarily need to be setting up and down.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (11)
1. a pole piece roll squeezer, comprise unreeling structure, conveying mechanism, roller press mechanism and rolling-up mechanism, described roller press mechanism comprises the upper pressure roller that is oppositely arranged and lower compression roller and for driving, lower compression roller relative motion is to implement the pressure roller driving mechanism of roll-in, it is characterized in that, also comprise the contrary driving mechanism that is coupled to described upper pressure roller and/or lower compression roller, the contrary cylinder pressure of described contrary driving mechanism for adopting hydraulic-driven or air pressure to drive, described contrary driving mechanism controllably applies the active force of drawing close opposite direction with pressure roller to eliminate or to weaken pressure roller vibrations to upper pressure roller and/or lower compression roller.
2. pole piece roll squeezer as claimed in claim 1, it is characterized in that, described upper and lower pressure roller is oppositely arranged up and down, and described contrary driving mechanism comprises for described upper pressure roller being applied to the superinverse cylinder pressure of upward pressure and for described lower compression roller being applied to the subinverse cylinder pressure of downward pressure.
3. pole piece roll squeezer as claimed in claim 2, it is characterized in that, described pressure roller driving mechanism comprises for driving two servomotors of described upper pressure roller lifting and for driving the hydraulic cylinder of described lower compression roller lifting, wherein said two servomotors are the synchronous two ends that drive described upper pressure roller respectively.
4. the pole piece roll squeezer as described in claims 1 to 3 any one, it is characterized in that, on described, lower compression roller is that the oil that is provided with oil circuit adds hot-pressing roller, described oil adds hot-pressing roller and has oil supply system, recovery system and internal oil passages, described internal oil passages comprises center oil circuit and some groups of roll surface oil circuits, each is organized roll surface oil circuit and includes the first oblique oil circuit, the second oblique oil circuit and the axial oil circuit arranging near roll surface, conduction oil flows into tail end through the initiating terminal of described axial oil circuit, one end of described the first oblique oil circuit and described the second oblique oil circuit communicates with initiating terminal and the tail end of axial oil circuit respectively, described center oil circuit comprises center oilhole, plug and circulation oilhole, described plug tight fit embeds in the oilhole of described center, described circulation oilhole runs through in described plug, the other end of described the first oblique oil circuit and described the second oblique oil circuit is communicated with respectively with by the separated described center of described plug oil circuit, wherein said the second oblique oil circuit is communicated with described circulation oilhole by described center oilhole.
5. pole piece roll squeezer as claimed in claim 4, it is characterized in that, described oil adds hot-pressing roller and comprises and take described oil heating pressure roller shaft to 3 described axial oil circuits arranging on the same circumference as the center of circle, between each axial oil circuit, head and the tail are communicated with successively, conduction oil flows into the tail end of the 3rd axial oil circuit through the initiating terminal of the axial oil circuit of article one, described one end of described the first oblique oil circuit and described the second oblique oil circuit communicates with the initiating terminal of the axial oil circuit of article one and the tail end of the 3rd axial oil circuit respectively.
6. pole piece roll squeezer as claimed in claim 4, is characterized in that, described oil add hot-pressing roller comprise around described oil add 10 groups that the even circumferential of hot-pressing roller arranges described in roll surface oil circuit.
7. the pole piece roll squeezer as described in claims 1 to 3 any one, it is characterized in that, also comprise the autothreading tape mechanism that coordinates described roller press mechanism to arrange, described autothreading tape mechanism comprises chain, threading roller, S roller, threading bar and some threadings are crossed roller, described chain has two of being parallel to each other and each roller of pile warp and forms closed path, described threading roller drives rotation by motor, described chain is moved along described closed path, described threading bar is fixed between two chains, in the process moving at described chain, by described chain-driving, along chain path, moved, need the initiating terminal of the pole piece of roll-in to be fixed on described threading bar.
8. pole piece roll squeezer as claimed in claim 7, is characterized in that, described S roller is for heating the warm-up mill of pole piece.
9. the pole piece roll squeezer as described in claims 1 to 3 any one, it is characterized in that, also comprise online mechanism for measuring thick, described thickness measurement online mechanism comprises the first mechanism for measuring thick and the second mechanism for measuring thick that uses thickness measurement with laser, before described the first mechanism for measuring thick and described the second mechanism for measuring thick lay respectively at described roller press mechanism and after described roller press mechanism, described the first mechanism for measuring thick is for measuring the thickness of the front pole piece of roll-in, described the second mechanism for measuring thick is for measuring the thickness of pole piece after roll-in, the same point of pole piece before described the first mechanism for measuring thick and described the second mechanism for measuring thick are arranged to measure roll-in and after roll-in.
10. pole piece roll squeezer as claimed in claim 9, is characterized in that, thickness measurement online mechanism is also included in the 3rd mechanism for measuring thick that described the second mechanism for measuring thick is provided for manual thickness measuring afterwards.
11. pole piece roll squeezers as described in claims 1 to 3 any one, it is characterized in that, also comprise tension control mechanism, automatic one or more in tape splicing mechanism, trimming material mechanism, brush dust mechanism, described tension control mechanism is for controlling the tension stability that is transferred pole piece, described automatic tape splicing mechanism is for being automatically directed to conveying mechanism by pole piece, described trimming material mechanism is for excised the unnecessary rim charge of pole piece before roll-in, and described brush dust mechanism for removing dust before roll-in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210221140.2A CN102723461B (en) | 2012-06-29 | 2012-06-29 | Pole piece roller compression machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210221140.2A CN102723461B (en) | 2012-06-29 | 2012-06-29 | Pole piece roller compression machine |
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| CN102723461A CN102723461A (en) | 2012-10-10 |
| CN102723461B true CN102723461B (en) | 2014-08-20 |
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Cited By (1)
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| CN103896091B (en) * | 2014-04-09 | 2017-02-08 | 惠州市赢合科技有限公司 | Automatic slitting machine and automatic slitting optimized design method |
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| CN108539126A (en) * | 2018-04-23 | 2018-09-14 | 邢台海裕锂能电池设备有限公司 | Lithium battery pole slice hot-rolling pressure device |
| CN108958071B (en) * | 2018-06-07 | 2019-05-07 | 中兴高能技术有限责任公司 | Pole piece roller compression machine control method, device and computer readable storage medium |
| CN110756425B (en) * | 2019-09-26 | 2021-07-30 | 合肥工业大学 | Separation device and separation method for electrode plates of waste vehicle-mounted lithium power batteries |
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| CN102723461A (en) | 2012-10-10 |
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