CN214378566U - Battery cell winding equipment - Google Patents
Battery cell winding equipment Download PDFInfo
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- CN214378566U CN214378566U CN202120076737.7U CN202120076737U CN214378566U CN 214378566 U CN214378566 U CN 214378566U CN 202120076737 U CN202120076737 U CN 202120076737U CN 214378566 U CN214378566 U CN 214378566U
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The utility model provides an electricity core coiling equipment. The cell winding device includes: the electrode unwinding assembly comprises two electrode unwinding mechanisms which are arranged at intervals, one of the two electrode unwinding mechanisms is used for outputting a positive electrode plate, and the other of the two electrode unwinding mechanisms is used for outputting a negative electrode plate; the membrane unwinding assembly comprises two membrane unwinding mechanisms which are arranged at intervals and used for outputting the membranes, one of the two membrane unwinding mechanisms is positioned between the two electrode unwinding mechanisms, and the other of the two membrane unwinding mechanisms is positioned above the electrode unwinding assembly; the winding core assembly is used for winding the diaphragm, the positive electrode pole piece and the negative electrode pole piece into a battery cell; the pre-wetting device comprises an output end used for outputting electrolyte to the surface of the positive electrode pole piece and/or the negative electrode pole piece, and the pre-wetting device is arranged on one side of at least one electrode unwinding mechanism. The utility model discloses a technical scheme's electric core coiling equipment can advance to soak positive negative pole piece to reach better infiltration effect.
Description
Technical Field
The utility model relates to an electricity core equipment field particularly, relates to an electricity core coiling equipment.
Background
In the manufacturing process of the lithium ion battery, an electrolyte infiltration process needs to be carried out on a battery core of the lithium ion battery, if the electrolyte infiltration effect is not good, an ion transmission path is caused to become far, so that shuttle of lithium ions between a positive electrode and a negative electrode is hindered, and a pole piece which is not contacted with the electrolyte cannot participate in electrochemical reaction, so that the resistance of the battery is increased, the multiplying power performance, the discharge capacity and the service life of the lithium ion battery are influenced, and therefore, infiltration of the positive electrode and the negative electrode of the battery core is very important.
In the prior art, the battery core of the battery is of a columnar structure, and is influenced by the structure, in the subsequent process of soaking the battery core, the whole columnar battery core is difficult to completely soak in the electrolyte, and particularly, in the width directions of the positive and negative pole pieces of the battery core, certain parts of the positive and negative pole pieces are difficult to completely soak in the electrolyte, so that the soaking effect is reduced, and the performance of the battery is reduced.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide an electric core winding apparatus, which can pre-wet positive and negative electrode plates of an electric core, thereby improving the wetting effect of the positive and negative electrode plates of the electric core.
In order to achieve the above object, the utility model provides an electricity core coiling equipment, include: the electrode unwinding assembly comprises two electrode unwinding mechanisms which are arranged at intervals, wherein one of the two electrode unwinding mechanisms is used for outputting a positive electrode plate, and the other of the two electrode unwinding mechanisms is used for outputting a negative electrode plate; the membrane unwinding assembly comprises two membrane unwinding mechanisms which are arranged at intervals and used for outputting a membrane, wherein one of the two membrane unwinding mechanisms is positioned between the two electrode unwinding mechanisms, so that the membrane output by the membrane unwinding mechanism is positioned between a positive electrode pole piece and a negative electrode pole piece, and the other of the two membrane unwinding mechanisms is positioned above the electrode unwinding assembly; the winding core assembly is used for winding the diaphragm, the positive electrode pole piece and the negative electrode pole piece into a battery cell; the pre-wetting device comprises an output end used for outputting electrolyte to the surface of the positive electrode pole piece and/or the negative electrode pole piece, and the pre-wetting device is arranged on one side of at least one electrode unwinding mechanism.
Furthermore, at least one side of each electrode unwinding mechanism is provided with a pre-wetting device, and the electrode unwinding mechanisms and the pre-wetting devices are sequentially arranged along the running direction of the positive electrode pole piece or the negative electrode pole piece.
Further, the battery cell winding equipment further comprises a mounting plate and a fixing part arranged on the mounting plate, the electrode unwinding assembly, the diaphragm unwinding assembly and the winding core assembly are all arranged on the mounting plate, the pre-wetting device is connected to the mounting plate through the fixing part, a distance h is reserved between the output end of the pre-wetting device and a first edge and a second edge of the positive electrode piece or the negative electrode piece, which are oppositely arranged, and the first edge and the second edge are arranged in the width direction.
Further, the distance between the output end and the first edge is equal to the distance between the output end and the second edge.
Further, the battery cell winding equipment further comprises a protective cover arranged on the periphery of the pre-soaking device.
Further, the battery cell winding equipment further comprises a liquid storage tank and a conveying pipeline connected with the liquid storage tank, and the conveying pipeline is connected with the pre-wetting device.
Furthermore, the pre-wetting device comprises a brush, wherein at least part of the brush is abutted against the surface of the positive electrode pole piece or the negative electrode pole piece to wet the positive electrode pole piece or the negative electrode pole piece, and at least part of the brush is used for forming an output end; or the pre-wetting device comprises an atomizing nozzle, the outlet of the atomizing nozzle faces the positive electrode pole piece or the negative electrode pole piece, and the outlet forms an output end.
Further, electric core coiling equipment is still including setting up the take-up pulley subassembly between electrode unwinding mechanism and the core subassembly of rolling up, and the take-up pulley subassembly includes the take-up pulley that a plurality of intervals set up, and the take-up pulley rotationally sets up in the mounting panel to carry out the tensioning to positive electrode sheet or negative electrode sheet.
Further, electric core winding equipment still includes two first driving motor that correspond the setting with two electrode unwinding mechanism and with roll up the second driving motor that core assembly is connected, electrode unwinding mechanism includes the drive roll for the rotatable setting of mounting panel, roll up core assembly and include the book needle for the rotatable setting of mounting panel, first driving motor's output shaft and drive roll drive connection, second driving motor's output shaft and book needle drive connection.
Furthermore, the battery cell winding equipment further comprises a mounting plate, a base, a storage mechanism and a material taking mechanism, wherein the mounting plate is used for supporting the electrode unwinding assembly, the diaphragm unwinding assembly, the winding core assembly and the pre-wetting device, the base is connected with the mounting plate, and the material taking mechanism is arranged on the base.
Use the technical scheme of the utility model, through setting up the moist device of preimpregnation, before becoming electric core with positive electrode sheet, negative electrode sheet and diaphragm coiling, can make positive electrode sheet and/or negative electrode sheet adsorb certain electrolyte earlier, like this, can advance infiltration to positive electrode sheet and/or negative electrode sheet before electric core shaping to can advance infiltration with the position that electric core failed to infiltrate in electrolyte, and then improve the holistic effect of infiltrating of the positive electrode sheet and/or the negative electrode sheet of electric core.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural diagram of an embodiment of a cell winding apparatus of the present invention; and
fig. 2 shows a schematic view of the impregnation of the positive electrode pad with electrolyte of fig. 1.
Wherein the figures include the following reference numerals:
10. an electrode unwinding mechanism; 11. a first edge; 12. a second edge; 20. a diaphragm unwinding mechanism; 30. a core assembly; 40. a pre-immersion device; 50. mounting a plate; 60. a tension wheel; 1. a positive electrode plate; 2. a negative electrode plate; 3. a diaphragm.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
It should be noted that, in the embodiment of the present invention, the pre-wetting is performed by using the pre-wetting device 40 to wet at least a portion of the positive electrode plate and/or the negative electrode plate of the battery cell before the battery cell is formed, for the battery cell is required to be wetted with the electrolyte after the battery cell is formed by winding.
As shown in fig. 1, an embodiment of the present invention provides a cell winding apparatus. The battery core winding equipment comprises an electrode unwinding assembly, a diaphragm unwinding assembly, a winding core assembly 30 and a pre-wetting device 40. The electrode unwinding assembly comprises two electrode unwinding mechanisms 10 arranged at intervals, wherein one of the two electrode unwinding mechanisms 10 is used for outputting a positive electrode plate 1, and the other of the two electrode unwinding mechanisms 10 is used for outputting a negative electrode plate 2; the membrane unreeling assembly comprises two membrane unreeling mechanisms 20 which are arranged at intervals and used for outputting the membranes, one of the two membrane unreeling mechanisms 20 is positioned between the two electrode unreeling mechanisms 10, so that the membranes 3 output by the membrane unreeling mechanisms 20 are positioned between a positive electrode pole piece 1 and a negative electrode pole piece 2, and the other of the two membrane unreeling mechanisms 20 is positioned above the electrode unreeling assembly; the winding core assembly 30 is used for winding the diaphragm 3, the positive electrode pole piece 1 and the negative electrode pole piece 2 into a battery cell; the pre-wetting device 40 comprises an output end for outputting electrolyte to the surface of the positive electrode pole piece 1 and/or the negative electrode pole piece 2, and the pre-wetting device 40 is arranged on one side of at least one electrode unwinding mechanism 10.
In the above technical scheme, by providing the pre-wetting device 40, before the positive electrode plate 1, the negative electrode plate 2 and the diaphragm 3 are wound into the battery cell, the positive electrode plate 1 and/or the negative electrode plate 2 can be made to adsorb a certain amount of electrolyte, so that the positive electrode plate 1 and the negative electrode plate 2 can be pre-wetted before the battery cell is formed, and thus, the position of the battery cell which cannot be wetted in the subsequent wetting step can be pre-wetted, and the overall wetting effect of the positive electrode plate 1 and the negative electrode plate 2 of the battery cell is improved.
Specifically, in the embodiment of the present invention, the winding core assembly 30 can wind the diaphragm 3, the positive electrode plate 1 and the negative electrode plate 2 into an electric core, and the diaphragm 3 can isolate the positive electrode plate 1 and the negative electrode plate 2, so as to avoid the short circuit occurring due to the contact of the positive electrode plate 1 and the negative electrode plate 2.
It should be noted that, in the embodiment of the present invention, that "another of the two membrane unwinding mechanisms 20 is located above the electrode unwinding assembly" means that in the vertical direction in fig. 1, one membrane unwinding mechanism 20 is located above the two electrode unwinding mechanisms 10, that is, after the positive electrode sheet 1, the negative electrode sheet 2 and the membrane 3 located between the positive electrode sheet 1 and the negative electrode sheet 2 are wound around the winding core assembly 30, the membrane 3 output by the other membrane unwinding mechanism 20 of the two membrane unwinding mechanisms 20 can be wound around the outside of the pole piece (the positive electrode sheet 1 or the negative electrode sheet 2) located outside, so that an electric core can be formed.
In the embodiment of the present invention, as shown in fig. 1, the pre-wetting device 40, the electrode unwinding assembly and the membrane unwinding assembly are located on the same side of the winding core assembly 30. Therefore, the pre-wetting device 40 can be used for pre-wetting the positive electrode pole piece 1 and the negative electrode pole piece 2 before the positive electrode pole piece 1 and the negative electrode pole piece 2 are wound, so that the overall wetting effect of the positive electrode pole piece 1 and the negative electrode pole piece 2 of the battery cell is improved, and the problems of slow liquid discharge, long operation waiting time, serious pollution of a battery shell and the like in the liquid injection process of the battery cell after molding can be solved.
As shown in fig. 1, in the embodiment of the present invention, at least one side of each electrode unwinding mechanism 10 is provided with a pre-wetting device 40, and along the running direction of the positive electrode plate 1 or the negative electrode plate 2, the electrode unwinding mechanism 10 and the pre-wetting device 40 are sequentially arranged.
Through the arrangement, at least one side of the electrode unwinding mechanism 10 located at the upper position of fig. 1 is provided with the pre-wetting device 40, and the pre-wetting device 40 can be used for outputting electrolyte to one side or two opposite sides of the positive electrode sheet 1 output by the electrode unwinding mechanism 10, so that pre-wetting is performed on one side or two opposite sides of the positive electrode sheet 1; similarly, at least one side of the electrode unwinding mechanism 10 located at the lower position in fig. 1 is also provided with a pre-wetting device 40, so that the electrolyte can be output to one side or both sides of the negative electrode sheet 2 output by the electrode unwinding mechanism 10, thereby pre-wetting one side or both sides of the negative electrode sheet 2.
Specifically, the embodiment of the utility model provides an in, arrange electrode unwinding mechanism 10 and presoaking moist device 40 in proper order along positive electrode sheet 1 or negative electrode sheet 2's traffic direction, like this, can be to its spraying electrolyte when positive electrode sheet 1 or negative electrode sheet 2 moves to carry out presoaking to positive electrode sheet 1 or negative electrode sheet 2 better.
Preferably, in an alternative embodiment not shown in the drawings, each electrode unwinding mechanism 10 is provided with two pre-wetting devices 40, and the two pre-wetting devices 40 are respectively arranged on two opposite sides of the positive electrode sheet 1 to pre-wet two surfaces of the positive electrode sheet 1. Similarly, two pre-wetting devices 40 may be provided to pre-wet both surfaces of the negative electrode tab 2. Of course, in alternative embodiments not shown in the drawings, the number of pre-wetting devices 40 on each side of the positive electrode sheet 1 or the negative electrode sheet 2 may be set to two, two or more, and so on.
Specifically, the pre-infiltration device 40 is arranged to pre-infiltrate the positive electrode plate 1 and the negative electrode plate 2 of the battery cell, so that infiltration can be completed more quickly after the battery cell is formed, and further, the problems of slow liquid discharge, long operation waiting time, serious pollution to a battery shell and the like in the liquid injection process of the battery cell after the battery cell is formed can be solved.
As shown in fig. 1 and fig. 2, in the embodiment of the present invention, the electric core winding device further includes a mounting plate 50 and a fixing member disposed on the mounting plate 50, the electrode unwinding assembly, the membrane unwinding assembly and the winding core assembly 30 are disposed on the mounting plate 50, the pre-wetting device 40 is connected to the mounting plate 50 through the fixing member, a distance h is disposed between the output end of the pre-wetting device 40 and the first edge 11 and the second edge 12 of the positive electrode plate 1 or the negative electrode plate 2, which are disposed oppositely, wherein the first edge 11 and the second edge 12 are disposed along the width direction.
In the above arrangement, by providing the fixing member, the pre-wetting device 40 may be mounted on the mounting plate 50, and the pre-wetting device 40 extends along the width direction of the positive electrode plate 1 or the negative electrode plate 2 (that is, the pre-wetting device 40 extends along a direction perpendicular to the mounting plate 50 in fig. 1), so that the orthogonal projection of the output end of the pre-wetting device 40 has a certain distance from the first edge 11 and the second edge 12 of the positive electrode plate 1 or the negative electrode plate 2, and thus, the middle position of the positive electrode plate 1 or the negative electrode plate 2 can be pre-wetted relatively accurately, and the pre-wetting device 40 more accurately wets the position of the battery cell that is not wetted in the electrolysis, so that the battery cell achieves a better wetting effect in the electrolyte, and the conductivity of the battery is improved.
As shown in fig. 2, in the embodiment of the present invention, the distance between the output end and the first edge 11 is equal to the distance between the output end and the second edge 12.
Through the arrangement, the distance between the edge of the orthographic projection of the output end of the pre-wetting device 40 on the positive electrode plate 1 or the negative electrode plate 2 and the first edge 11 and the distance between the edge of the orthographic projection of the output end of the pre-wetting device 40 on the positive electrode plate 1 or the negative electrode plate 2 are respectively equal to the distance between the second edge 12 and the first edge 11, so that the pre-wetting device 40 can wet the middle part of the positive electrode plate 1 or the negative electrode plate 2 in the width direction of the positive electrode plate 1 or the negative electrode plate 2 in the figure 2 (namely, the middle 1/3 position of the electrolyte brushing area in the width direction of the positive electrode plate 1 and/or the negative electrode plate 2 is ensured), and further, a better wetting effect can be achieved.
The embodiment of the utility model provides an in, electric core coiling equipment is still including setting up in the protection casing of the periphery of infiltrating device 40 in advance.
In the above technical solution, the protective cover is arranged on the periphery of the pre-wetting device 40, so that the electrolyte can be prevented from being diffused in the operation space in a large area in the process of outputting the electrolyte at the output end of the pre-wetting device 40.
The embodiment of the utility model provides an in, electric core coiling equipment still includes the liquid storage pot and the conveying line who is connected with the liquid storage pot, and conveying line is connected with presoaking moist device 40.
In the above arrangement, the electrolyte stored in the storage tank may be delivered to the pre-wetting apparatus 40 through a delivery pipe, so as to supply the electrolyte to the pre-wetting apparatus 40.
Preferably, in the embodiment of the present invention, the material of the conveying pipeline is made of FEP (fluorinated ethylene propylene copolymer). Of course, in alternative embodiments, the material of the delivery line may be a fluoro-rubber material or the like.
Preferably, in the embodiment of the present invention, the amount of the electrolyte applied to the positive electrode tab 1 or the negative electrode tab 2 may be 10% to 20% of the electrolyte weight of the electrolyte injection amount of the battery.
As shown in fig. 1, in the embodiment of the present invention, the pre-wetting device 40 includes a coating, and at least a part of the coating abuts against the surface of the positive electrode plate 1 or the negative electrode plate 2 to wet the positive electrode plate 1 or the negative electrode plate 2, and at least a part of the coating forms an output end.
In the above arrangement, when the positive electrode plate 1 or the negative electrode plate 2 operates, the positive electrode plate 1 or the negative electrode plate 2 is relatively displaced with respect to the brush, and a part of the brush abuts against the positive electrode plate 1 or the negative electrode plate 2, so that the electrolyte can be coated on the surfaces of the positive electrode plate 1 and the negative electrode plate 2, thereby infiltrating the positive electrode plate 1 or the negative electrode plate 2.
Of course, in an alternative embodiment not shown in the drawings, the pre-wetting device 40 may also comprise an atomising nozzle, the outlet of which is directed towards the positive electrode sheet 1 or the negative electrode sheet 2, the outlet forming the output. The atomizing nozzle is a structure capable of spraying liquid in an atomized state and uniformly suspending in air.
Specifically, the operating principle of the atomizing nozzle is that the liquid inside is extruded into the nozzle by internal pressure, and a stainless steel sheet is placed inside the nozzle, so that the liquid flowing at high speed impacts on the stainless steel sheet and forms atomized particles with a diameter of about 15 to 60 micrometers after rebounding. Preferably, the atomized particles are sprayed out to the middle 1/3 in the width direction of the positive electrode plate 1 or the negative electrode plate 2 through the nozzle outlet, so that the electrolyte is arranged at the middle 1/3 in the width direction of the positive electrode plate 1 or the negative electrode plate 2 (see fig. 2) to achieve the purpose of pre-wetting the electrode plates.
As shown in fig. 1, in the embodiment of the present invention, the battery cell winding apparatus further includes a tensioning wheel assembly disposed between the electrode unwinding mechanism 10 and the winding core assembly 30, the tensioning wheel assembly includes a plurality of tensioning wheels 60 disposed at intervals, the tensioning wheel 60 is rotatably disposed on the mounting plate 50, so as to tension the positive electrode pole piece 1 or the negative electrode pole piece 2.
In the above arrangement, the positive electrode plate 1 or the negative electrode plate 2 is tensioned by the plurality of tensioning wheels 60, so that the positive electrode plate 1 or the negative electrode plate 2 can move to the position of the winding core assembly 30 more smoothly, and the positive electrode plate 1, the negative electrode plate 2 and the diaphragm are wound into a battery cell better, thereby avoiding the positive electrode plate 1 or the negative electrode plate 2 from wrinkling.
Specifically, in the embodiment of the present invention, the plurality of tensioning wheels 60 are sequentially arranged along the running direction of the positive electrode plate 1 or the negative electrode plate 2, and two adjacent tensioning wheels 60 are arranged on two sides of the positive electrode plate 1 or the negative electrode plate 2 (i.e. two adjacent tensioning wheels 60 are located on different sides of the positive electrode plate 1 or the negative electrode plate 2), so as to tension the positive electrode plate 1 or the negative electrode plate 2.
Preferably, in the embodiment of the present invention, the tension pulleys 60 on both sides of the positive electrode tab 1 and the negative electrode tab 2 are set to be six. Of course, in alternative embodiments not shown in the drawings, the tension pulleys 60 on both sides of the positive electrode tab 1 and the negative electrode tab 2 may each be provided in five or seven, and so on.
As shown in fig. 1, in the embodiment of the present invention, the electric core winding apparatus further includes two first driving motors corresponding to the two electrode unwinding mechanisms 10 and a second driving motor connected to the winding core assembly, the electrode unwinding mechanism 10 includes a driving roller for the rotatable setting of the mounting plate 50, the winding core assembly includes a winding needle for the rotatable setting of the mounting plate 50, the output shaft of the first driving motor is connected to the driving roller, and the output shaft of the second driving motor is connected to the winding needle.
In the above arrangement, the two first driving motors respectively drive the driving rollers of the two electrode unwinding mechanisms 10 to rotate, so as to output the positive electrode sheet 1 and the negative electrode sheet 2, the output shaft of the second driving motor is in driving connection with the winding needle, and the winding needle is driven to rotate by the rotation of the output shaft of the second driving motor, so as to wind the output positive electrode sheet 1, the output negative electrode sheet 2 and the diaphragm into the battery cell.
Preferably, the embodiment of the present invention provides an embodiment, the membrane unreeling assembly includes a driven roller, and the driven roller is rotatably disposed relative to the mounting plate 50, so as to make the membrane unreel the assembly output membrane 3 under the driving of the roll core assembly 30.
As shown in fig. 1, in the embodiment of the present invention, the battery cell winding apparatus further includes a mounting plate 50 for supporting the electrode unwinding assembly, the membrane unwinding assembly, the winding core assembly 30 and the pre-wetting device 40, a base connected to the mounting plate 50, a storage mechanism disposed on the base, and a material taking mechanism disposed on the base.
In the above arrangement, the material taking mechanism can take out the positive electrode plate 1 and the negative electrode plate 2 stored in the material storing mechanism, and convey the positive electrode plate 1 and the negative electrode plate 2 to the electrode unwinding assembly, and the membrane unwinding assembly outputs the membrane 3, and then pre-soaks the positive electrode plate 1 and the negative electrode plate 2 through the pre-moistening device 40, and finally, the winding core assembly 30 can roll the positive electrode plate 1, the negative electrode plate 2 and the membrane into the battery cell, so that the consumption of manpower can be reduced.
Preferably, the embodiment of the present invention provides an embodiment, the electric core winding apparatus further includes a deviation rectifying assembly disposed on the electrode unwinding mechanism, and is used for rectifying the running direction of the positive electrode sheet 1 or the negative electrode sheet 2 in the running process of the positive electrode sheet 1 or the negative electrode sheet 2.
From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: by arranging the pre-wetting device, the positive electrode pole piece and the negative electrode pole piece can adsorb certain electrolyte before the positive electrode pole piece, the negative electrode pole piece and the diaphragm are wound into the battery cell, so that the positive electrode pole piece and/or the negative electrode pole piece can be pre-wetted before the battery cell is formed, the position of the battery cell which cannot be wetted in the electrolyte can be pre-wetted, and the overall wetting effect of the positive electrode pole piece and/or the negative electrode pole piece of the battery cell is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A cell winding apparatus, comprising:
the electrode unwinding assembly comprises two electrode unwinding mechanisms (10) which are arranged at intervals, one of the two electrode unwinding mechanisms (10) is used for outputting a positive electrode plate (1), and the other of the two electrode unwinding mechanisms (10) is used for outputting a negative electrode plate (2);
the diaphragm unwinding assembly comprises two diaphragm unwinding mechanisms (20) which are used for outputting diaphragms and are arranged at intervals, one of the two diaphragm unwinding mechanisms (20) is positioned between the two electrode unwinding mechanisms (10), so that a diaphragm (3) output by the diaphragm unwinding mechanism (20) is positioned between the positive electrode pole piece (1) and the negative electrode pole piece (2), and the other of the two diaphragm unwinding mechanisms (20) is positioned above the electrode unwinding assembly;
the winding core assembly (30) is used for winding the diaphragm (3), the positive electrode pole piece (1) and the negative electrode pole piece (2) into a battery cell;
the pre-soaking device (40) comprises an output end used for outputting electrolyte to the surface of the positive electrode pole piece (1) and/or the negative electrode pole piece (2), and the pre-soaking device (40) is arranged on one side of at least one electrode unreeling mechanism (10).
2. The cell winding apparatus according to claim 1, wherein the pre-wetting device (40) is disposed on at least one side of each electrode unwinding mechanism (10), and the electrode unwinding mechanisms (10) and the pre-wetting devices (40) are sequentially arranged along a running direction of the positive electrode sheet (1) or the negative electrode sheet (2).
3. The cell winding apparatus according to claim 1, further comprising a mounting plate (50) and a fixing member disposed on the mounting plate (50), wherein the electrode unwinding assembly, the separator unwinding assembly and the winding core assembly (30) are disposed on the mounting plate (50), the pre-wetting device (40) is connected to the mounting plate (50) through the fixing member, a distance h is disposed between an output end of the pre-wetting device (40) and a first edge (11) and a second edge (12) of the positive electrode sheet (1) or the negative electrode sheet (2), which are disposed opposite to each other, and the first edge (11) and the second edge (12) are disposed along a width direction.
4. The cell winding apparatus according to claim 3, characterized in that the distance between the output end and the first edge (11) is equal to the distance between the output end and the second edge (12).
5. The cell winding apparatus according to any of claims 1 to 4, further comprising a protective cover disposed at the periphery of the pre-wetting device (40).
6. The cell winding apparatus according to any of claims 1 to 4, further comprising a fluid reservoir and a delivery line connected to the fluid reservoir, the delivery line being connected to the pre-wetting device (40).
7. The cell winding apparatus according to any one of claims 1 to 4,
the pre-wetting device (40) comprises a brush, at least part of the brush is abutted against the surface of the positive electrode pole piece (1) or the negative electrode pole piece (2) to wet the positive electrode pole piece (1) or the negative electrode pole piece (2), and at least part of the brush forms the output end; alternatively, the first and second electrodes may be,
the pre-wetting device (40) comprises an atomizing nozzle, the outlet of which faces the positive electrode sheet (1) or the negative electrode sheet (2), the outlet forming the output.
8. The cell winding apparatus according to claim 3 or 4, further comprising a tensioning wheel assembly disposed between the electrode unwinding mechanism (10) and the winding core assembly (30), wherein the tensioning wheel assembly comprises a plurality of spaced tensioning wheels (60), and the tensioning wheels (60) are rotatably disposed on the mounting plate (50) to tension the positive electrode sheet (1) or the negative electrode sheet (2).
9. The cell winding apparatus according to any one of claims 1 to 4, further comprising two first driving motors disposed corresponding to the two electrode unwinding mechanisms (10) and a second driving motor connected to the winding core assembly, wherein the electrode unwinding mechanism (10) includes a driving roller rotatably disposed with respect to the mounting plate (50), the winding core assembly includes a winding pin rotatably disposed with respect to the mounting plate (50), an output shaft of the first driving motor is drivingly connected to the driving roller, and an output shaft of the second driving motor is drivingly connected to the winding pin.
10. The cell winding apparatus according to any one of claims 1 to 4, further comprising a mounting plate (50) for supporting the electrode unwinding assembly, the membrane unwinding assembly, the winding core assembly (30) and the pre-wetting device (40), a base connected to the mounting plate (50), a storing mechanism disposed on the base, and a material taking mechanism disposed on the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120076737.7U CN214378566U (en) | 2021-01-12 | 2021-01-12 | Battery cell winding equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120076737.7U CN214378566U (en) | 2021-01-12 | 2021-01-12 | Battery cell winding equipment |
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| CN214378566U true CN214378566U (en) | 2021-10-08 |
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| CN202120076737.7U Active CN214378566U (en) | 2021-01-12 | 2021-01-12 | Battery cell winding equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114614066A (en) * | 2022-03-18 | 2022-06-10 | 上海兰钧新能源科技有限公司 | Battery winding method and device |
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2021
- 2021-01-12 CN CN202120076737.7U patent/CN214378566U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114614066A (en) * | 2022-03-18 | 2022-06-10 | 上海兰钧新能源科技有限公司 | Battery winding method and device |
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