CN113053669A - Element winding and roll coating method - Google Patents
Element winding and roll coating method Download PDFInfo
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- CN113053669A CN113053669A CN202110346837.1A CN202110346837A CN113053669A CN 113053669 A CN113053669 A CN 113053669A CN 202110346837 A CN202110346837 A CN 202110346837A CN 113053669 A CN113053669 A CN 113053669A
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- 238000000576 coating method Methods 0.000 title claims abstract description 152
- 238000004804 winding Methods 0.000 title claims abstract description 92
- 239000011248 coating agent Substances 0.000 claims abstract description 150
- 239000011888 foil Substances 0.000 claims abstract description 123
- 239000003792 electrolyte Substances 0.000 claims abstract description 111
- 238000000034 method Methods 0.000 claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 238000005096 rolling process Methods 0.000 claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims description 24
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 235000015895 biscuits Nutrition 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 31
- 239000007921 spray Substances 0.000 description 20
- 238000005507 spraying Methods 0.000 description 14
- 238000005470 impregnation Methods 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000007761 roller coating Methods 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000011086 high cleaning Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/145—Liquid electrolytic capacitors
Abstract
The invention discloses a method for coiling and roll coating a plain film, which comprises the following steps: sandwiching electrolytic paper between the anode foil and the cathode foil, and winding with the winding core as the axis; at least one of the anode foil, the cathode foil and the electrolytic paper is roll-coated with the electrolyte before entering the winding core; wherein, the anode foil, the cathode foil or the electrolytic paper is not immersed in the electrolyte when being roll-coated; and after the anode foil, the cathode foil and the electrolytic paper are wound to a preset length, stopping rolling and coating the electrolyte, and finally fixing the wound tail end. The anode foil, the cathode foil or the electrolytic paper is not immersed in the electrolyte during roll coating, namely is not immersed below the liquid level of the electrolyte, so that the problem that the formed material belt is easy to crack or microcrack in the traction process due to the fact that the formed material belt is immersed in the electrolyte and adsorbs excessive electrolyte can be avoided, and the problem that the formed material belt cannot be used continuously due to the fact that the formed material belt is still immersed in the electrolyte after shutdown or shift halt and adsorbs the electrolyte excessively is solved.
Description
Technical Field
The invention relates to the technical field of plain winding, in particular to a method for plain winding and roll coating.
Background
For the wound capacitor or the wound battery, in the conventional winding process, the anode foil and the cathode foil are respectively overlapped and wound with the electrolytic paper to form a 'prime' and the wound end is fixed by the electronic adhesive tape or the electronic glue, and in the next impregnation process, the prime is vacuumized and then immersed in the electrolyte, so that the electrolytic paper can be soaked in the electrolyte to have electric capacity. In order to solve the problem, the industry provides a method for manufacturing a winding impregnation integrated process, i.e. the impregnation process is combined in the winding process, the installation of the whole impregnation device is omitted, the manufacturing efficiency of the winding type capacitor or battery can be greatly improved, and the manufacturing cost is reduced.
For example, the Chinese utility model patent (publication number: CN207719348U, publication date: 2018-08-10) discloses a lithium ion battery collecting, winding and liquid injecting device, which comprises a winding machine, wherein a liquid injecting component for performing electrolyte infiltration treatment on a lithium battery cell winding belt is arranged in front of the winding machine; the electrolyte injection assembly comprises an electrolyte tank, wherein the electrolyte tank is arranged in front of the winding machine and used for allowing the lithium battery cell winding belt to be immersed in, a guide roller assembly for guiding the lithium battery cell winding belt into the electrolyte tank is arranged at the electrolyte tank, and a compression roller assembly for pressing the lithium battery cell winding belt into the electrolyte tank is arranged in the electrolyte tank. For another example, the chinese patent application (publication No. CN111899991A kokai: 2020-11-06) discloses a winding and spraying integrated process, which is suitable for participating in manufacturing a winding capacitor, and the winding and spraying integrated process includes the following steps: preparing a roll core, a positive foil, a first electrolytic paper, a negative foil and a second electrolytic paper, sequentially stacking the positive foil, the first electrolytic paper, the negative foil and the second electrolytic paper, and winding by taking the roll core as an axis; (B) preparing an anode nozzle and a cathode nozzle, wherein in the winding process of the step (A), the anode nozzle and the cathode nozzle spray electrolyte to enable the first electrolytic paper and the second electrolytic paper to be soaked in the electrolyte in the winding process respectively; (C) after the preset length is wound in the step (A), the spraying of the anode nozzle and the cathode nozzle is stopped, the positive foil, the first electrolytic paper, the negative foil and the second electrolytic paper are cut, and the tail end of the winding is fixed.
In the conventional winding and impregnation integrated process, the impregnation process generally has two ways: firstly, a winding belt, electrolytic paper, an electrode belt, an electrode foil and the like are completely immersed in electrolyte before winding to carry out traction and infiltration at the same time, but the material belt is easily immersed in the electrolyte to excessively adsorb the electrolyte so as to cause the fracture problem or the hidden danger of cracks in the traction process, has high reject ratio and is not beneficial to the consistency of the performance of the finished products in whole batch; when the machine is stopped or after work is stopped, the material belt is still immersed in the electrolyte and excessively adsorbs the electrolyte, so that the material belt cannot be used continuously and is very easy to pull and break, and even if the material belt can be manufactured, the consistency among finished products can be influenced. The other method is that the electrolyte is sprayed on the material belt through a spray head, the spraying position and the spraying amount can be better controlled through spraying the electrolyte by the spray head, but the spray head used when the material belt is small in size specification is a micro spray head, the electrolyte channel is relatively small, and the electrolyte component characteristics enable the problem that the channel of the spray head is easy to be crystallized and blocked to cause inconsistency of the spraying amount before and after the spraying amount is caused by crystallization and blockage, particularly the residual electrolyte in the spray head channel is easy to be crystallized and blocked when the spray head is not flowed at the period of shutdown; when the material belts with different specifications are switched, the spray head assembly needs to be correspondingly disassembled and assembled, the process is complicated and complicated, and the cost is increased; moreover, when the micro spray head is used for a period of time, crystallization blockage exists, the micro spray head is high in cleaning difficulty and can only be replaced generally, the micro spray head belongs to an easily-consumed product, and the maintenance cost is high.
Disclosure of Invention
In order to solve the problems, the invention provides a method for winding and roll coating the element.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of element winding and roll coating comprising the steps of:
sandwiching electrolytic paper between the anode foil and the cathode foil, and winding with the winding core as the axis;
at least one of the anode foil, the cathode foil and the electrolytic paper is roll-coated with electrolyte before entering the winding core, so that the electrolytic paper is soaked with the electrolyte in the winding process; wherein the anode foil, the cathode foil or the electrolytic paper is not immersed in the electrolyte when being roll-coated;
and after the anode foil, the cathode foil and the electrolytic paper are wound to a preset length, stopping rolling and coating the electrolyte, and finally fixing the wound tail end.
In a preferred embodiment of the method for winding and roll-coating the element, the roll-coating of the electrolyte is performed by a roll-coating mechanism.
As a preferred embodiment of the method for winding and roll-coating the element, the roll-coating mechanism includes a roll-coating roller and a liquid supply portion, the liquid supply portion is used for supplying the roll-coating roller with the electrolyte, and the roll-coating roller is in rolling contact with the anode foil or the cathode foil or the electrolytic paper to roll-coat the electrolyte absorbed by the roll-coating roller on the anode foil or the cathode foil or the electrolytic paper.
In a preferred embodiment of the method for winding and roll-coating the element, the liquid supply unit is a liquid tank, and the roll-coating roller is partially immersed in the electrolyte in the liquid tank during roll-coating, and partially exposed to the surface of the electrolyte and brought into contact with the anode foil, the cathode foil, or the electrolytic paper.
As a preferred embodiment of the method for winding and roll-coating the element provided by the present invention, the roll-coating mechanism comprises at least one roll-coating roller. One rolling coating roller or a plurality of rolling coating rollers can be arranged, so that insufficient rolling coating at one time is avoided.
As a preferred embodiment of the method for plain winding and roll coating provided by the present invention, the roll coating mechanism further comprises a driver connected to the roll coating roller to drive the roll coating roller to abut against or be away from the anode foil or the cathode foil or the electrolytic paper, and the tension of the anode foil or the cathode foil or the electrolytic paper can be adjusted by the driver, for example, the driver drives the roll coating roller to rise to abut against the anode foil or the cathode foil or the electrolytic paper to reach a roll coating state, and the rising can increase the traction tension of the anode foil or the cathode foil or the electrolytic paper, which not only contributes to the tension of winding but also facilitates roll coating.
As a preferable embodiment of the method for winding and roll-coating the element provided by the present invention, the roll-coating mechanism further includes a press roller disposed corresponding to the roll-coating roller, and the anode foil or the cathode foil or the electrolytic paper is interposed between the press roller and the roll-coating roller.
In a preferred embodiment of the method for winding and roll-coating the element provided by the present invention, the roll-coating roll is a roll-coating roll having an adsorption part on a peripheral surface thereof.
As a preferred embodiment of the method for winding and roll-coating the element provided by the present invention, the roll-coating of the electrolyte solution before the at least one of the anode foil, the cathode foil and the electrolytic paper enters the winding core refers to any one of the following cases:
(1) performing roll coating of electrolyte on the electrolytic paper;
(2) respectively performing roll coating of electrolyte on the anode foil and the cathode foil;
(3) and respectively performing roll coating of the electrolyte on the anode foil, the cathode foil and the electrolytic paper.
In a preferred embodiment of the method for plain winding and roll coating according to the present invention, when the winding end is fixed, the outermost winding of the plain winding is a blank outer winding which is not roll-coated with the electrolyte.
The invention has the following beneficial effects:
the invention provides a method for winding and roll-coating an element, wherein at least one of an anode foil, a cathode foil and electrolytic paper is subjected to roll-coating of electrolyte before entering a winding core, so that the electrolytic paper is soaked with the electrolyte in the winding process; the anode foil, the cathode foil or the electrolytic paper is not immersed in the electrolyte during roll coating, namely is not immersed below the liquid level of the electrolyte, so that the problem that the formed material belt is easy to crack or microcrack in the traction process due to the fact that the formed material belt is immersed in the electrolyte and adsorbs too much electrolyte after the formed material belt is immersed in the electrolyte (the anode foil, the cathode foil and the electrolytic paper are collectively referred to as the formed material belt) can be avoided, and the problem that the formed material belt cannot be used continuously due to the fact that the formed material belt is still immersed in the electrolyte after shutdown or shift stoppage and adsorbs the electrolyte excessively is also solved.
The roll coating of the electrolyte is carried out through the roll coating roller of the roll coating mechanism, wherein when the roll coating roller is roll coated, one part of the roll coating roller is immersed into the electrolyte, and the other part of the roll coating roller is exposed out of the electrolyte liquid level and is abutted to the formed material belt. Furthermore, the roll coating roller is connected with a driver, and is used for driving the roll coating roller to abut against or be far away from the component material belt, so that whether roll coating is performed or not can be flexibly selected (the abutting component material belt is roll coating), when the machine is stopped or stops working, the roll coating roller can leave without contacting the component material belt, the influence of the roll coating roller on the component material belt in the shutdown stage is completely avoided, if the surface of the roll coating roller adsorbs electrolyte, in the shutdown stage, if the roll coating roller continuously abuts against the component material belt, the contacted area on the component material belt continuously adsorbs the electrolyte, and when the machine is restarted, the hidden danger of breakage exists in the area; the problem that when the micro spray head is adopted for spraying, residual electrolyte in a spray head channel at the period of stopping working does not flow, is easy to crystallize and block, causes inconsistency of spraying amount and further affects consistency between finished products is solved, and when material belts with different specifications are switched, the spray head assembly needs to be correspondingly disassembled and assembled, the process is complicated and complex, and the cost is increased; the micro spray head with crystal blockage has high cleaning difficulty, can be generally replaced, belongs to an easily-consumed product, and has high maintenance cost.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the roll coating mechanism of the present invention, in which a front side plate is seen in perspective.
Detailed Description
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example 1
A method of element winding and roll coating comprising the steps of:
(1) the electrolytic paper is sandwiched between the anode foil and the cathode foil, and then the anode foil and the cathode foil are wound around a winding core.
During specific implementation, the anode foil, the cathode foil, the first electrolytic paper and the second electrolytic paper are respectively conveyed to the same winding core through the feeding conveying assembly at a certain tension, so that the anode foil, the first electrolytic paper, the cathode foil and the second electrolytic paper are sequentially stacked and wound by taking the winding core as an axis.
(2) The first electrolytic paper and the second electrolytic paper are respectively subjected to roll coating of electrolyte through a roll coating mechanism before entering the winding core, so that the electrolytic paper is soaked with the electrolyte in the winding process; wherein the anode foil, the cathode foil or the electrolytic paper is not immersed in the electrolyte when being roll-coated.
And providing 2 roller coating mechanisms which are respectively arranged on the feeding paths of the first electrolytic paper and the second electrolytic paper so as to respectively roller coat the surfaces of the first electrolytic paper and the second electrolytic paper with electrolyte.
As shown in fig. 1, the roll coating mechanism includes a fixed frame (not shown), a roll coating roller 1 disposed on the fixed frame, and a liquid supply portion, where the liquid supply portion is configured to supply an electrolyte 2 to the roll coating roller 1, and the roll coating roller 1 is in rolling contact with the anode foil or the cathode foil or the electrolytic paper to roll coat the electrolyte 2 absorbed by the roll coating roller 1 on the anode foil or the cathode foil or the electrolytic paper. The liquid supply part is a liquid tank 3 for accommodating an electrolyte 2. The roll coating roller 1 is a roll coating roller 1 arranged on the fixed frame and can rotate relative to the fixed frame, specifically, when roll coating is carried out on the roll coating roller 1, a part of the roll coating roller 1 is immersed into the electrolyte 2 in the liquid tank 3, and a part of the roll coating roller is exposed out of the liquid level of the electrolyte 2 and is abutted to the first electrolytic paper or the second electrolytic paper.
The roll coating mechanism further comprises a press roller 4 which is arranged corresponding to the roll coating roller 1, the first electrolytic paper or the second electrolytic paper is arranged between the press roller 4 and the roll coating roller 1, and the electrolyte 2 absorbed by the roll coating roller 1 can be better and more uniformly roll coated on the surface of the first electrolytic paper or the second electrolytic paper through the extrusion effect of the press roller 4.
The roller coating roller 1 is a roller coating roller 1 with an adsorption part on the peripheral surface, so that the electrolyte 2 can be better adsorbed and the subsequent replacement and maintenance are facilitated.
(3) And after the anode foil, the cathode foil and the electrolytic paper are wound to a preset length, stopping rolling and coating the electrolyte, and finally fixing the wound tail end.
In particular implementations, the predetermined length is dependent upon the specifications of the capacitor to be fabricated. And after the preset length is reached, stopping spraying the electrolyte, cutting the anode foil, the cathode foil, the first electrolytic paper and the second electrolytic paper, and fixing the winding tail end to finish the winding of the element.
Example 2
The difference from the embodiment 1 is that: in the step (2), the anode foil and the cathode foil are respectively subjected to roll coating of the electrolyte through a roll coating mechanism, and the first electrolytic paper and the second electrolytic paper are not subjected to roll coating, specifically, the electrolyte on the anode foil and the anode foil is soaked on the first electrolytic paper or the second electrolytic paper which is close to the anode foil or the cathode foil in the winding process.
Example 3
The difference from the embodiment 1 is that: and (2) respectively performing roll coating of electrolyte on the anode foil, the cathode foil, the first electrolytic paper and the second electrolytic paper through a roll coating mechanism. Each roll coating mechanism comprises 2 roll coating rollers.
Example 4
A method of element winding and roll coating comprising the steps of:
(1) the electrolytic paper is sandwiched between the anode foil and the cathode foil, and then the anode foil and the cathode foil are wound around a winding core.
During specific implementation, the anode foil, the cathode foil, the first electrolytic paper and the second electrolytic paper are respectively conveyed to the same winding core through the feeding conveying assembly at a certain tension, so that the anode foil, the first electrolytic paper, the cathode foil and the second electrolytic paper are sequentially stacked and wound by taking the winding core as an axis.
(2) The first electrolytic paper and the second electrolytic paper are respectively subjected to roll coating of electrolyte through a roll coating mechanism before entering the winding core, so that the electrolytic paper is soaked with the electrolyte in the winding process; wherein the anode foil, the cathode foil or the electrolytic paper is not immersed in the electrolyte when being roll-coated.
And providing 2 roller coating mechanisms which are respectively arranged on the feeding paths of the first electrolytic paper and the second electrolytic paper so as to respectively roller coat the surfaces of the first electrolytic paper and the second electrolytic paper with electrolyte.
The roll coating mechanism comprises a fixing frame, a roll coating roller and a liquid supply part, wherein the roll coating roller and the liquid supply part are arranged on the fixing frame, the liquid supply part is used for supplying electrolyte to the roll coating roller, and the roll coating roller is in rolling contact with the anode foil or the cathode foil or the electrolytic paper so as to roll coat the electrolyte adsorbed by the roll coating roller on the anode foil or the cathode foil or the electrolytic paper. The liquid supply part is a liquid tank and is used for containing electrolyte. The roll coating roller is arranged on the fixing frame and can rotate relative to the fixing frame, specifically, when the roll coating roller is roll coated, a part of the roll coating roller is immersed into the electrolyte in the liquid tank, and a part of the roll coating roller is exposed out of the liquid level of the electrolyte and is abutted to the first electrolytic paper or the second electrolytic paper.
The roll coating mechanism further comprises a press roller which is arranged corresponding to the roll coating roller, the first electrolytic paper or the second electrolytic paper is arranged between the press roller and the roll coating roller, and electrolyte absorbed by the roll coating roller can be better and more uniformly roll coated on the surface of the first electrolytic paper or the second electrolytic paper through the squeezing action of the press roller.
The roll coating roller is a roll coating roller with an adsorption part on the peripheral surface, so that electrolyte can be better adsorbed and subsequent replacement and maintenance are facilitated.
The roll coating mechanism further comprises a driver which is connected with the roll coating roller so as to drive the roll coating roller to abut against or be far away from the first electrolytic paper or the second electrolytic paper. Whether roll coating is performed or not can be flexibly selected (the roll coating is performed when the roll coating is formed by abutting against the component material belt), when the machine is stopped or stopped, the driver drives the roll coating roller to leave without contacting the component material belt, so that the influence of the roll coating roller on the component material belt in the shutdown stage is completely avoided, if the roll coating roller continuously abuts against the component material belt in the shutdown stage, the contact area on the component material belt continuously adsorbs electrolyte, and when the machine is restarted, the hidden danger of breakage exists in the area; the problem that when the micro spray head is adopted for spraying, residual electrolyte in a spray head channel at the period of stopping working does not flow, is easy to crystallize and block, causes inconsistency of spraying amount and further affects consistency between finished products is solved, and when material belts with different specifications are switched, the spray head assembly needs to be correspondingly disassembled and assembled, the process is complicated and complex, and the cost is increased; the micro spray head with crystal blockage has high cleaning difficulty, can be generally replaced, belongs to an easily-consumed product, and has high maintenance cost.
(3) Stopping rolling and coating the electrolyte after the anode foil, the cathode foil and the electrolytic paper are wound to a preset length, and finally fixing the wound tail end; when the winding tail end is fixed, the outermost circle of the plain winding is a blank outer circle of the first electrolytic paper and the second electrolytic paper which are not coated with the electrolyte in a rolling mode.
In particular implementations, the predetermined length is dependent upon the specifications of the capacitor to be fabricated. And after the preset length is reached, stopping spraying the electrolyte, cutting the anode foil and the cathode foil, continuously winding at least one circle of the first electrolytic paper and the second electrolytic paper to obtain a section of blank outer ring without rolling the electrolyte, cutting the first electrolytic paper and the second electrolytic paper, and then winding a circle of adhesive tape to cover the blank outer ring through the adhesive tape conveying assembly, so that the tail end of the winding is fixed fully automatically, and the winding of the element is completed. Compared with the tail end fixing method of the embodiment 1-3, in the embodiment, the first electrolytic paper and the second electrolytic paper are particularly extended without rolling and coating the electrolyte to form the blank outer ring wrapping the outermost ring of the element, so that not only is full-automatic tape pasting or dispensing fixing in a real sense realized, but also the wound tail end is easy to fix and is relatively stable in a fixed state, and the new technical problem that in the tail end fixing method of the embodiment 1-3, the outermost ring of the element is the electrolytic paper directly rolled and coated with the electrolyte or the electrolytic paper rolled and coated with the electrolyte by the secondary outer ring to indirectly infiltrate the electrolyte, so that wet electrolytic paper exists in a dispensing or tape gluing position, and full-automatic tape pasting or dispensing fixing is difficult or even impossible to adopt is solved.
Example 5
The difference from the example 4 lies in: in the step (3), when the winding end is fixed, the outermost circle of the plain winding is a blank outer circle of the anode foil, the first electrolytic paper and the second electrolytic paper which are not roll-coated with the electrolyte.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of enabling a thorough understanding of the disclosure of the application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields and are within the protection scope of the present application.
Claims (10)
1. A method of element winding and roll coating, comprising the steps of:
sandwiching electrolytic paper between the anode foil and the cathode foil, and winding with the winding core as the axis;
at least one of the anode foil, the cathode foil and the electrolytic paper is roll-coated with electrolyte before entering the winding core, so that the electrolytic paper is soaked with the electrolyte in the winding process; wherein the anode foil, the cathode foil or the electrolytic paper is not immersed in the electrolyte when being roll-coated;
and after the anode foil, the cathode foil and the electrolytic paper are wound to a preset length, stopping rolling and coating the electrolyte, and finally fixing the wound tail end.
2. A method of both winding and roll coating a biscuit according to claim 1, wherein the roll coating of the electrolyte is by a roll coating mechanism.
3. A method of winding and roll-coating a web according to claim 1, wherein the roll-coating mechanism comprises a roll-coating roller and a liquid supply portion, the liquid supply portion is used for supplying electrolyte to the roll-coating roller, and the roll-coating roller is in rolling contact with the anode foil or the cathode foil or the electrolytic paper to roll-coat the electrolyte absorbed by the roll-coating roller on the anode foil or the cathode foil or the electrolytic paper.
4. A method according to claim 3, wherein the liquid supply part is a liquid bath, and when the roll coating roller rolls, a part of the liquid supply part is immersed into the electrolyte in the liquid bath, and a part of the liquid supply part is exposed out of the liquid level of the electrolyte and abuts against the anode foil or the cathode foil or the electrolytic paper.
5. A method of winding and roll coating a web according to claim 3, wherein the roll coating mechanism comprises at least one roll coating roller.
6. A method of web winding and roll coating according to claim 3, wherein the roll coating mechanism further comprises a driver connected to the roll coating roller to drive the roll coating roller against or away from the anode or cathode foil or electrolytic paper.
7. A method of both prime winding and roll coating according to claim 3, wherein the roll coating mechanism further comprises a press roll disposed in correspondence with the roll coating roll, the anode foil or cathode foil or electrolytic paper being interposed between the press roll and the roll coating roll.
8. A method of winding and roll-coating a web according to claim 3, wherein the roll-coating roll is a roll-coating roll having a suction portion on a peripheral surface thereof.
9. A method of winding and roll coating a web according to claim 1, wherein at least one of the anode foil, cathode foil and electrolytic paper is roll coated with an electrolyte prior to entering the winding core by either:
(1) performing roll coating of electrolyte on the electrolytic paper;
(2) respectively performing roll coating of electrolyte on the anode foil and the cathode foil;
(3) and respectively performing roll coating of the electrolyte on the anode foil, the cathode foil and the electrolytic paper.
10. A method of both plain winding and roll coating as claimed in claim 1, wherein the outermost turns of the plain winding are blank outer turns not roll coated with electrolyte when the ends of the winding are fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110346837.1A CN113053669A (en) | 2021-03-31 | 2021-03-31 | Element winding and roll coating method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110346837.1A CN113053669A (en) | 2021-03-31 | 2021-03-31 | Element winding and roll coating method |
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| CN113053669A true CN113053669A (en) | 2021-06-29 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201345383Y (en) * | 2008-08-26 | 2009-11-11 | 比亚迪股份有限公司 | Lithium ion secondary battery |
| CN201906689U (en) * | 2010-09-29 | 2011-07-27 | 常州绝缘材料总厂有限公司 | Coating device for producing lithium ion battery diaphragm |
| CN103117369A (en) * | 2013-02-01 | 2013-05-22 | 深圳中兴创新材料技术有限公司 | Composite battery diaphragm |
| CN105895962A (en) * | 2016-05-25 | 2016-08-24 | 成都国珈星际固态锂电科技有限公司 | Preparation apparatus and preparation method for gel polymer lithium ion battery |
| CN106207052A (en) * | 2016-09-13 | 2016-12-07 | 河北金力新能源科技股份有限公司 | A kind of coating unit of high temperature resistance multilayer composite lithium ion cell barrier film |
| CN106257710A (en) * | 2015-06-17 | 2016-12-28 | 深圳市沃特玛电池有限公司 | A kind of multi pole ears becomes the high multiplying power lithium ion battery of size |
| CN106953057A (en) * | 2015-12-22 | 2017-07-14 | 住友化学株式会社 | The manufacture method of functional membrane and the manufacture device of functional membrane |
| CN207719348U (en) * | 2017-12-16 | 2018-08-10 | 中慈（青岛）新能源汽车制造有限公司 | A kind of lithium ion battery collection winding and priming device |
| CN109174565A (en) * | 2018-10-19 | 2019-01-11 | 江苏众凯电气科技有限公司 | A kind of battery separator surface coating machine |
| CN110603670A (en) * | 2017-12-14 | 2019-12-20 | 株式会社Lg化学 | Method for continuously manufacturing lithium secondary battery having passivation film formed on surface of lithium metal electrode and lithium secondary battery manufactured thereby |
-
2021
- 2021-03-31 CN CN202110346837.1A patent/CN113053669A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201345383Y (en) * | 2008-08-26 | 2009-11-11 | 比亚迪股份有限公司 | Lithium ion secondary battery |
| CN201906689U (en) * | 2010-09-29 | 2011-07-27 | 常州绝缘材料总厂有限公司 | Coating device for producing lithium ion battery diaphragm |
| CN103117369A (en) * | 2013-02-01 | 2013-05-22 | 深圳中兴创新材料技术有限公司 | Composite battery diaphragm |
| CN106257710A (en) * | 2015-06-17 | 2016-12-28 | 深圳市沃特玛电池有限公司 | A kind of multi pole ears becomes the high multiplying power lithium ion battery of size |
| CN106953057A (en) * | 2015-12-22 | 2017-07-14 | 住友化学株式会社 | The manufacture method of functional membrane and the manufacture device of functional membrane |
| CN105895962A (en) * | 2016-05-25 | 2016-08-24 | 成都国珈星际固态锂电科技有限公司 | Preparation apparatus and preparation method for gel polymer lithium ion battery |
| CN106207052A (en) * | 2016-09-13 | 2016-12-07 | 河北金力新能源科技股份有限公司 | A kind of coating unit of high temperature resistance multilayer composite lithium ion cell barrier film |
| CN110603670A (en) * | 2017-12-14 | 2019-12-20 | 株式会社Lg化学 | Method for continuously manufacturing lithium secondary battery having passivation film formed on surface of lithium metal electrode and lithium secondary battery manufactured thereby |
| CN207719348U (en) * | 2017-12-16 | 2018-08-10 | 中慈（青岛）新能源汽车制造有限公司 | A kind of lithium ion battery collection winding and priming device |
| CN109174565A (en) * | 2018-10-19 | 2019-01-11 | 江苏众凯电气科技有限公司 | A kind of battery separator surface coating machine |
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Application publication date: 20210629 |