Electrolyte transfer printing equipment and solid-state battery production line
By using the pre-pressing and preheating devices of the electrolyte transfer equipment, the problems of solid electrolyte blockage and unevenness were solved, achieving efficient and uniform transfer and quality improvement in solid-state battery production.
Patent Information
- Application Number
- CN202422652600.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-10-31
AI Technical Summary
In the prior art, solid electrolyte materials are prone to clogging the coating slits of the spraying mechanism during the spraying process, resulting in uneven solid electrolyte layer on the electrode surface and low forming speed.
An electrolyte transfer device is used, including a pre-pressing device, a preheating device, and a laminating device. Pre-pressing brings the separator into contact with the electrode, preheating reduces the viscosity of the solid electrolyte and increases the activity of the electrode, and the laminating device ensures that the solid electrolyte is evenly distributed on the electrode.
This avoids clogging issues, improves the uniformity and forming speed of the solid electrolyte layer, enhances the connection quality between the electrode and the electrolyte, and improves the production efficiency and quality of solid-state batteries.
Smart Images
Figure CN223566652U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of solid battery production equipment, especially to electrolyte transfer equipment and solid battery production line. BACKGROUND
[0002] Solid-state lithium metal battery is a battery using solid-state electrolyte, wherein, the solid-state electrolyte replaces the separator and solid-state electrolyte used in the traditional lithium ion battery, so that the lithium metal anode replaces the graphite or silicon anode in the traditional lithium ion battery.
[0003] Since the lithium metal anode has higher energy density than the traditional anode, the solid-state lithium metal battery is allowed to store more energy in the same volume.
[0004] Since the solid-state electrolyte material has the characteristic of no support, the forming mode of the solid-state electrolyte layer on the pole piece is usually spraying, that is, the solid-state electrolyte powder is sprayed on the surface of the pole piece by spraying.
[0005] However, in the spraying forming mode, the solid-state electrolyte material is easy to block the coating slit of the spraying mechanism, so that the solid-state electrolyte layer on the surface of the pole piece is uneven and the forming speed is low. SUMMARY
[0006] The utility model aims at at least solving one of the technical problems existing in the prior art. To this end, the utility model provides an electrolyte transfer equipment, which can avoid the problem of solid-state electrolyte material blocking the coating slit, and at the same time, make the solid-state electrolyte layer on the pole piece uniform, and improve the forming speed.
[0007] The utility model also provides a solid battery production line with the above-mentioned electrolyte transfer equipment.
[0008] According to the electrolyte transfer equipment of the first aspect of the utility model, the solid-state electrolyte on the isolation film is transferred to the pole piece, the electrolyte transfer equipment includes pre-pressing device, pre-heating device and laminating device, the pre-heating device is located between the pre-pressing device and the laminating device, the pre-pressing device is used for changing the isolation film and the pole piece from the separation state to the contact state, the pre-heating device is used for heating the isolation film and the pole piece in the contact state, the laminating device is used for extruding the isolation film and the pole piece which have been heated, so that the solid-state electrolyte on the isolation film is transferred to the pole piece, and the solid-state electrolyte can be separated from the isolation film.
[0009] According to the electrolyte transfer equipment of the utility model, at least the following beneficial effects are obtained:
[0010] 1. The utility model discloses a pre-pressing device can make isolation film and pole piece first contact and pre-extrusion, can eliminate the gap between isolation film and pole piece, convenient solid electrolyte contact and connect pole piece, prepare for transfer printing, further, can improve the quality of transfer printing.
[0011] 2. The utility model discloses a preheating device can heat isolation film, make the temperature of solid electrolyte rise, make the viscosity of solid electrolyte reduce and flowability increase, make solid electrolyte easy to separate with isolation film, and thus, solid electrolyte is easy to transfer printing to pole piece.
[0012] Meanwhile, if there is pressure effect, solid electrolyte is easy to flow and spread along pole piece, makes solid electrolyte easy to distribute evenly on pole piece.
[0013] 3. The utility model discloses a preheating device can heat pole piece, raise the temperature of pole piece, make pole piece have higher activity, improve the ability of pole piece to connect solid electrolyte, make solid electrolyte more easily transfer printing to pole piece from isolation film.
[0014] 4. The utility model discloses a pre-pressing device and preheating device also decompose the process of transferring solid electrolyte to pole piece, avoid the transfer printing process to concentrate in the laminating device, and thus, solid electrolyte and pole piece have sufficient time and suitable temperature to contact and connect, improve the transfer printing quality.
[0015] 5. The utility model discloses a pre-pressing device and preheating device also decompose the process of transferring solid electrolyte to pole piece, avoid the transfer printing process to concentrate in the laminating device, and thus, solid electrolyte and pole piece stay in the laminating device for a shorter time, improve the forming speed of solid electrolyte on pole piece, improve the production efficiency.
[0016] Namely, the laminating device does not need to increase the diameter of the roller and reduce the speed of the roller to prolong the extrusion contact time of solid electrolyte and pole piece, and the extrusion contact time of solid electrolyte and pole piece is equal to the arc length of the outer periphery of the roller divided by the linear speed of the roller, the arc length of the outer periphery of the roller is positively correlated with the diameter of the roller, and thus, the roller of the laminating device of the utility model can adopt a smaller diameter, which is beneficial to miniaturization of the laminating device, and simultaneously, the roller of the laminating device of the utility model can also adopt a higher linear speed, namely, the forming speed is improved.
[0017] 6. The utility model discloses a laminating device, and thus, on the basis of pre-extrusion and preheating of solid electrolyte and pole piece, extruding solid electrolyte and pole piece makes solid electrolyte flow and spread fully and distribute evenly on pole piece, high-quality transfer printing is completed, and the requirements of solid battery production and manufacturing are met.
[0018] 7. Compared with the spray forming mode, the solid-state electrolyte does not need to pass through the coating slit of the spray mechanism, and thus, the problem of blockage does not occur.
[0019] The utility model discloses still provide a kind of solid-state battery production line, with above beneficial effect.
[0020] According to the electrolyte transfer printing equipment of the first aspect embodiment of the utility model, the electrolyte transfer printing equipment is arranged at the discharging side of the dry coating equipment, and the pole piece is transferred printing after being coated by dry method.
[0021] Beneficially, the electrolyte transfer printing equipment is arranged at the discharging side of the dry coating equipment, so that the pole piece coated by dry method can be directly transferred printing, reducing online inventory and manufacturing cost.
[0022] Meanwhile, the surface roughness of the pole piece coated by dry powder is suitable, which can improve the ability of connecting solid-state electrolyte, help to improve the transfer printing quality, and further produce high-quality electrodes.
[0023] According to the electrolyte transfer printing equipment of the first aspect embodiment of the utility model, the number of the isolation film is two, and the pole piece can be located between the two isolation films. One isolation film transfers the solid-state electrolyte to one side of the pole piece, and the other isolation film transfers the solid-state electrolyte to the other side of the pole piece.
[0024] Beneficially, the utility model sets two isolation films, so that the pole piece has solid-state electrolyte on both sides, and more solid-state electrolyte remains on the pole piece, which helps to improve the capacity of solid-state battery.
[0025] If only one side of the pole piece is transferred with solid-state electrolyte, when the pole piece is wound, the side of the pole piece not transferred with solid-state electrolyte will contact the solid-state electrolyte on the other side of the pole piece, but the two are not fully connected, which affects the quality of the electrode.
[0026] When the two sides of the pole piece are transferred with solid-state electrolyte, whether the pole piece is wound or not, the two sides of the pole piece are well connected with the solid-state electrolyte, which is beneficial to ensure the quality of the solid-state battery.
[0027] According to the electrolyte transfer printing equipment of the first aspect embodiment of the utility model, the pre-pressing device includes a pair of pre-pressing rollers, and the pair of pre-pressing rollers press the isolation film and the pole piece.
[0028] Beneficially, the utility model sets pre-pressing rollers, so that the isolation film and the pole piece are close to and contact each other through the extrusion of the two pre-pressing rollers, so that the solid-state electrolyte connects the pole piece, and at the same time, the movement of the isolation film and the pole piece is not affected, so that the transfer printing continues, reducing production downtime.
[0029] According to the electrolyte transfer printing device of the first aspect of the present application, the preheating device comprises a pair of infrared heaters, and the pair of infrared heaters are used for heating the isolation film and the electrode sheet, and the space between the pair of infrared heaters allows the isolation film and the electrode sheet to pass through.
[0030] Beneficially, the present application can heat the solid-state electrolyte and the electrode sheet by setting a pair of infrared heaters, improve the activity of the solid-state electrolyte and the electrode sheet, facilitate the connection of the solid-state electrolyte and the electrode sheet in one body, and improve the transfer printing quality.
[0031] At the same time, the infrared heater is a non-contact heating device, and can also heat the interior of the material, especially, facilitates the heating of the junction of the solid-state electrolyte and the electrode sheet, so as to connect the solid-state electrolyte and the electrode sheet.
[0032] According to the electrolyte transfer printing device of the first aspect of the present application, the laminating device comprises a pair of laminating rollers, and the pair of laminating rollers clampingly roll the isolation film and the electrode sheet to transfer the solid-state electrolyte on the isolation film to the electrode sheet.
[0033] Beneficially, the present application further facilitates the extrusion of the isolation film and the electrode sheet by setting a pair of laminating rollers, so that the solid-state electrolyte which has contacted the electrode sheet closely adheres to the electrode sheet under suitable temperature conditions, and the solid-state electrolyte and the electrode sheet are strengthened.
[0034] According to the electrolyte transfer printing device of the first aspect of the present application, the laminating device comprises a hydraulic cylinder driving the laminating rollers to relatively approach or move away from each other.
[0035] Beneficially, the present application further connects the solid-state electrolyte and the electrode sheet by hydraulic pressure through the setting of the hydraulic cylinder, ensures the connection of the solid-state electrolyte and the electrode sheet under certain pressure conditions, and can improve the forming efficiency and forming quality of the connection of the solid-state electrolyte and the electrode sheet.
[0036] According to the electrolyte transfer printing device of the first aspect of the present application, the electrolyte transfer printing device comprises a film supply device, the film supply device comprises an isolation film unwinding mechanism and an isolation film winding mechanism, the isolation film unwinding mechanism is used for unwinding a raw material roll, the raw material roll is in a roll state of the isolation film with the solid-state electrolyte, and the isolation film winding mechanism is used for winding a waste material roll, the waste material roll is in a roll state of the isolation film with the solid-state electrolyte which has been transferred or removed.
[0037] Beneficially, the present application reduces the occupied space of the isolation film by setting the isolation film unwinding mechanism and the isolation film winding mechanism, at the same time, facilitates the collection of the isolation film waste, and at the same time, miniaturizes the electrolyte transfer printing device and reduces the occupied space.
[0038] According to the electrolyte transfer printing device of the first aspect of the utility model, the electrolyte transfer printing device includes an electrode sheet winding device, the electrode sheet winding device includes an electrode sheet winding mechanism and a flaw detector located at the incoming material side of the electrode sheet winding mechanism, and the flaw detector is used for detecting the surface quality of the solid-state electrolyte on the electrode sheet.
[0039] Beneficially, the electrode sheet winding mechanism can be used to wind the produced electrode sheet with the solid-state electrolyte, facilitate storage, and reduce the occupied space.
[0040] Meanwhile, the flaw detector can also be used to detect the surface quality of the solid-state electrolyte to analyze the separation of the solid-state electrolyte and the isolation film, so that the situation that the isolation film has more residual solid-state electrolyte can be found early to facilitate adjustment.
[0041] According to the solid-state battery production line of the second aspect of the utility model, the electrolyte transfer printing device described in any one of the above aspects is included.
[0042] Beneficially, the electrolyte transfer printing device can be used to eliminate the defects caused by the spraying method, improve the forming efficiency and forming quality of the solid-state electrolyte connected electrode sheet, and help improve the production efficiency and quality of the solid-state battery.
[0043] The additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS
[0044] In order to more clearly illustrate the technical scheme of the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.
[0045] Figure 1 It is the structure schematic diagram of the electrolyte transfer printing device of the solid-state battery production line of the utility model embodiment;
[0046] Figure 2 It is Figure 1 The structure schematic diagram of the electrolyte transfer printing device is shown.
[0047] Reference signs: 100 - pre-press device, 110 - pre-heating device, 120 - laminating device, 130 - pre-press roller, 140 - infrared heater, 150 - laminating roller, 160 - hydraulic cylinder, 170 - release film unwinding mechanism, 180 - release film winding mechanism, 190 - pole piece winding mechanism, 200 - defect detector, 210 - pole piece thinning device, 220 - pole piece tensioning device, 230 - thickness detection device. DETAILED DESCRIPTION
[0048] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.
[0049] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application. The device or element indicated is necessarily constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.
[0050] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If the first and the second are described, this is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of indicated technical features.
[0051] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting, connection and connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0052] The electrolyte transfer printing device and the solid-state battery production line according to the embodiments of the present application are described below with reference to the drawings.
[0053] Reference Figure 1 The present application aims to provide an embodiment of a solid-state battery production line.
[0054] In the embodiment, the solid-state battery production line comprises a pole piece production device and an electrolyte transfer device.
[0055] The pole piece production device can comprise a dry coating related device and a pole piece thinning device 210. The dry coating device can perform dry coating treatment on the surface of the pole piece, which can simplify the manufacturing steps of the positive and negative poles, reduce production cost and energy consumption, is friendly to the environment, facilitates large-scale production, and the pole piece produced by dry coating has higher performance, which is beneficial to improving the energy density, cycle performance and durability of the battery.
[0056] Since the embodiment does not involve improvement of the dry powder coating device, the utility model is not illustrated and described in detail, but this does not affect the clarity and completeness of the scheme.
[0057] After the pole piece is dry coated, the pole piece enters the pole piece thinning device 210, which comprises a pair of thinning rollers. The thinning rollers clamp and roll the pole piece, so that the thickness of the pole piece is small and uniform. Therefore, when the electrolyte is transferred subsequently, the thickness of the solid-state electrolyte on the pole piece can be guaranteed, the consistency of production is improved, and the quality of the battery is guaranteed.
[0058] In some specific embodiments of the utility model, the pole piece thinning device 210 can further comprise a pole piece tensioning device 220. The pole piece tensioning device 220 is arranged on the discharge side of the thinning rollers, so as to avoid loosening and bending of the pole piece and damage to the pole piece, thereby reducing the impact on the quality of the battery.
[0059] In some specific embodiments of the utility model, the pole piece tensioning device 220 can comprise a tensioning roller and an installation arm of the tensioning roller. Under the action of gravity or spring force, the installation arm swings, and the tensioning roller presses the pole piece, so that the pole piece maintains a certain tension and avoids relaxation.
[0060] In some specific embodiments of the utility model, the pole piece thinning device 210 can further comprise a thickness detection device 230. The thickness detection device 230 is arranged on the discharge side of the thinning rollers and on the incoming side of the pole piece tensioning device 220. Therefore, the thickness of the pole piece can be detected early, and the pole piece can be adjusted early when the thickness of the pole piece does not meet the requirements or is not uniform.
[0061] In some specific embodiments of the utility model, the thickness detection device 230 can comprise appearance detection content, so as to ensure the incoming quality of the pole piece, avoid using poor pole pieces, and reduce production loss.
[0062] In some specific embodiments of the utility model, the thickness detection device 230 can include detectors and a plurality of positioning rollers and guide rollers, two positioning rollers are arranged at the same height, so that the detector detects the pole piece vertically, and the detection quality is improved, and the guide rollers are located below the positioning rollers and on the incoming material side and the outgoing material side of the two positioning rollers, so that the pole piece is guided to the positioning rollers.
[0063] In order to arrange the solid electrolyte on the pole piece, the prior art usually applies a spray forming method, that is, a spraying mechanism is used to drive the solid electrolyte to flow by using gas, so that the solid electrolyte is sprayed on the pole piece, but the spraying mechanism usually has a coating slot to improve the airflow speed, but the solid electrolyte is easy to block the coating slot, especially to partially block the coating slot, so that part of the pole piece is not covered with the solid electrolyte, and the distribution of the solid electrolyte on the pole piece is also greatly different and uneven, which seriously affects the performance and quality of the solid electrolyte.
[0064] For this purpose, with reference to Figure 1 and Figure 2 The utility model also aims at providing an embodiment of an electrolyte transfer device, which can avoid the problem of solid electrolyte material blocking the coating slot, and make the solid electrolyte layer on the pole piece uniformly distributed, and improve the forming speed.
[0065] In this embodiment, if the incoming material thickness of the pole piece is qualified, the
[0066] In this embodiment, the electrolyte transfer device is used to transfer the solid electrolyte on the separator film to the pole piece, and the electrolyte transfer device includes a pre-pressing device 100, a pre-heating device 110 and a laminating device 120.
[0067] The pre-heating device 110 is located between the pre-pressing device 100 and the laminating device 120, the pre-pressing device 100 is used to change the separator film and the pole piece from a separated state to a contacted state, the pre-heating device 110 is used to heat the contacted separator film and pole piece, and the laminating device 120 is used to extrude the heated separator film and pole piece, so that the solid electrolyte on the separator film is transferred to the pole piece, and the solid electrolyte can be separated from the separator film.
[0068] In summary, first, the pre-pressing device 100 is arranged in this embodiment, so that the separator film and the pole piece are first contacted and pre-extruded, the gap between the separator film and the pole piece can be eliminated, the solid electrolyte is facilitated to contact and connect the pole piece, and preparation is made for transfer, and then the quality of the transfer can be improved.
[0069] Secondly, the preheating device 110 is arranged in the embodiment, the isolation film can be heated, the temperature of the solid-state electrolyte is increased, the viscosity of the solid-state electrolyte is reduced, the flowability of the solid-state electrolyte is increased, the solid-state electrolyte is easily separated from the isolation film, and thus the solid-state electrolyte is easily transferred to the pole piece.
[0070] Meanwhile, if the pressure acts, the solid-state electrolyte is easily flowed and spread along the pole piece, and the solid-state electrolyte is easily uniformly distributed on the pole piece.
[0071] Moreover, the preheating device 110 is arranged in the embodiment, the pole piece can be heated, the temperature of the pole piece is increased, the activity of the pole piece is higher, the connection ability of the pole piece to the solid-state electrolyte is improved, and the solid-state electrolyte is more easily transferred to the pole piece from the isolation film.
[0072] Furthermore, the pre-pressing device 100 and the preheating device 110 are arranged in the embodiment, the process of transferring the solid-state electrolyte to the pole piece is decomposed, the transfer process is not concentrated on the laminating device 120, and thus the solid-state electrolyte and the pole piece have sufficient time and suitable temperature to contact and connect, and the transfer quality is improved.
[0073] In addition, the pre-pressing device 100 and the preheating device 110 are arranged in the embodiment, the process of transferring the solid-state electrolyte to the pole piece is decomposed, the transfer process is not concentrated on the laminating device 120, and thus the solid-state electrolyte and the pole piece stay in the laminating device 120 for a shorter time, the forming speed of the solid-state electrolyte on the pole piece is improved, and the production efficiency is improved.
[0074] That is, the laminating device 120 does not need to increase the diameter of the roller and reduce the speed of the roller to prolong the time of extrusion contact of the solid-state electrolyte and the pole piece, the time of extrusion contact of the solid-state electrolyte and the pole piece is equal to the arc length of the outer periphery of the roller divided by the linear speed of the roller, the arc length of the outer periphery of the roller is positively correlated with the diameter of the roller, and thus the roller of the laminating device 120 can adopt a smaller diameter, which is beneficial to miniaturization of the laminating device 120, and meanwhile, the roller of the laminating device 120 can also adopt a higher linear speed, that is, the forming speed is improved.
[0075] In addition, the laminating device 120 is arranged in the embodiment, the solid-state electrolyte and the pole piece are extruded on the basis of pre-extrusion and pre-heating of the solid-state electrolyte and the pole piece, the solid-state electrolyte is fully flowed and spread, is uniformly distributed on the pole piece, the transfer is completed with high quality, and the requirements of solid-state battery production and manufacturing are met.
[0076] Since the solid-state battery production line of the embodiment adopts the electrolyte transfer equipment, compared with the spraying forming mode, the solid-state electrolyte does not need to pass through the coating slit of the spraying mechanism, and thus the problem of blockage does not occur.
[0077] Therefore, the electrolyte transfer equipment is applied, on the one hand, the defects generated by the spraying mode are eliminated, on the other hand, the forming efficiency and forming quality of the solid electrolyte connecting pole piece are improved, and the production efficiency and quality of the solid-state battery are improved.
[0078] In some specific embodiments of the utility model, the electrolyte transfer equipment can be arranged on the discharge side of the dry coating equipment, and the pole piece is transferred after dry coating.
[0079] It is easy to understand that the electrolyte transfer equipment is arranged on the discharge side of the dry coating equipment, the pole piece after dry coating can be directly transferred, the online inventory is reduced, and the manufacturing cost is reduced.
[0080] At the same time, the surface roughness of the pole piece after dry powder coating is suitable, the ability of connecting solid electrolyte can be improved, the transfer quality is improved, and high-quality electrodes are produced.
[0081] In some specific embodiments of the utility model, the pre-pressing device 100, the pre-heating device 110 and the laminating device 120 can be arranged from top to bottom to free up the floor space, facilitate the arrangement of the isolation film unwinding mechanism 170 and the isolation film winding mechanism 180 of the isolation film, make the electrolyte transfer equipment compact in structure, and be arranged on a wall.
[0082] In some specific embodiments of the utility model, the number of isolation films can be two, the pole piece can be located between the two isolation films, one isolation film transfers the solid electrolyte to one side of the pole piece, and the other isolation film transfers the solid electrolyte to the other side of the pole piece.
[0083] It is easy to understand that the two isolation films are arranged in the embodiment, the solid electrolyte is transferred to both sides of the pole piece, and more solid electrolyte is left on the pole piece, which helps to improve the capacity of the solid-state battery.
[0084] If only one side of the pole piece is transferred with solid electrolyte, when the pole piece is wound, the side of the pole piece not transferred with solid electrolyte will contact the solid electrolyte on the other side of the pole piece, but the two are not fully connected, which affects the quality of the electrode.
[0085] When the two sides of the pole piece are transferred with solid electrolyte, whether the pole piece is wound or not, the two sides of the pole piece are well connected with the solid electrolyte, which is beneficial to ensure the quality of the solid-state battery.
[0086] When the pole piece is wound, the solid electrolyte on one side of the pole piece contacts and extrudes the solid electrolyte on the other side of the pole piece, and a layer of thick solid electrolyte is formed by fusion, which is not easy to appear delamination, and does not affect the quality of the battery,
[0087] In some specific embodiments of the present application, the pre-pressing device 100 can include a pair of pre-pressing rollers 130, which clamp and roll the isolation film and the pole piece.
[0088] It is easy to understand that, by setting the pre-pressing rollers 130, the isolation film and the pole piece can be brought close to and in contact with each other through the extrusion of the two pre-pressing rollers 130, so as to connect the pole piece with the solid-state electrolyte, while the movement of the isolation film and the pole piece is not affected, so that the transfer continues and the production downtime is reduced.
[0089] In some specific embodiments of the present application, the pre-pressing device 100 can include mounting seats for positioning the pre-pressing rollers 130, the number of mounting seats is two, one mounting seat installs one pre-pressing roller 130, wherein the mounting seat has an installation opening, the installation opening is located on the side where the two mounting seats are close to each other, and the installation opening is covered with an installation cover, the installation cover is connected with the mounting seat by bolts, so that the space between the installation opening and the installation cover positions the pre-pressing rollers 130, which does not affect the rotation of the pre-pressing rollers 130, while the mutual extrusion of the two pre-pressing rollers 130 and the corresponding reaction force make the pre-pressing rollers 130 remain in the installation opening, and the force acting on the installation cover is less, so that the installation cover is not easy to loosen.
[0090] In some specific embodiments of the present application, the mounting seat can be connected with a screw rod and a screw sleeve, the screw sleeve is fixed on the mounting seat, and the screw rod is rotatably installed, so that the screw sleeve can be moved by rotating the screw rod, and then the mounting seat and the pre-pressing rollers 130 are moved, the gap between the two pre-pressing rollers 130 is changed, and the mutual extrusion of the isolation film and the pole piece is adjusted to meet the production needs.
[0091] In some specific embodiments of the present application, the pre-heating device 110 can include a pair of infrared heaters 140, which are used to heat the isolation film and the pole piece, and the space between the pair of infrared heaters 140 allows the isolation film and the pole piece to pass through.
[0092] It is easy to understand that, by setting the pair of infrared heaters 140, the solid-state electrolyte and the pole piece can be heated, the activity of the solid-state electrolyte and the pole piece is improved, the solid-state electrolyte and the pole piece are conveniently connected together, and the transfer quality is improved.
[0093] At the same time, the infrared heater 140 is a non-contact heating device, which can also heat the interior of the material, especially, the junction of the solid-state electrolyte and the pole piece is conveniently heated, so that the solid-state electrolyte and the pole piece are connected.
[0094] In some specific embodiments of the present application, the preheating device 110 can be provided with a fence to form a heating channel, the walls of the heating channel are provided with infrared heaters 140, and the heating channel allows the passage of the pole piece and the separator film, so that the heat is concentrated, the heating efficiency is improved, and the heat loss is reduced, thereby reducing the energy consumption.
[0095] In some specific embodiments of the present application, the laminating device 120 can include a pair of laminating rollers 150, which clamp and roll the separator film and the pole piece to transfer the solid-state electrolyte on the separator film to the pole piece.
[0096] It is easy to understand that the present application sets a pair of laminating rollers 150, which also facilitates the extrusion of the separator film and the pole piece, so that the solid-state electrolyte that has contacted the pole piece closely adheres to the pole piece under suitable temperature conditions, thereby strengthening the solid-state electrolyte and.
[0097] In some specific embodiments of the present application, the laminating device 120 can include a hydraulic cylinder 160 that drives the laminating rollers 150 to move closer or farther apart.
[0098] It is easy to understand that the present application sets a pair of laminating rollers 150, which also facilitates the extrusion of the separator film and the pole piece, so that the solid-state electrolyte that has contacted the pole piece closely adheres to the pole piece under suitable temperature conditions, thereby strengthening the solid-state electrolyte and.
[0099] At the same time, the adjustable range of the hydraulic pressure is large, which can meet the pressure required for the solid-state electrolyte to connect the pole piece.
[0100] In some specific embodiments of the present application, the electrolyte transfer device can include a film supply device, the film supply device includes a separator film unwinding mechanism 170 and a separator film winding mechanism 180, the separator film unwinding mechanism 170 is used to unwind a raw material roll, the raw material roll is in a roll state of the separator film with solid-state electrolyte, and the separator film winding mechanism 180 is used to wind a waste material roll, the waste material roll is in a roll state of the separator film with solid-state electrolyte.
[0101] It is easy to understand that the present application sets a pair of laminating rollers 150, which also facilitates the extrusion of the separator film and the pole piece, so that the solid-state electrolyte that has contacted the pole piece closely adheres to the pole piece under suitable temperature conditions, thereby strengthening the solid-state electrolyte and.
[0102] In some specific embodiments of the present application, the two film supply devices corresponding to the two separator films are arranged on the left and right sides of the pre-pressing device 100, the preheating device 110 and the laminating device 120, so that the space is utilized reasonably, and the structure is more compact.
[0103] In some specific embodiments of the utility model, can make the isolation film unwinding mechanism 170 and isolation film winding mechanism 180 including auxiliary support arm, auxiliary support arm has the positioning opening of the material shaft where accommodating material roll, the rotation of material shaft is limited, and when auxiliary support arm rotates and leaves material shaft, it is convenient to replace material shaft.
[0104] In some specific embodiments of the utility model, can make material shaft along its own axial direction disassembly, replace the installation mode of along its own radial disassembly, make the occupied space of electrolyte transfer device smaller, convenient arrangement.
[0105] In some specific embodiments of the utility model, can make isolation film unwinding mechanism 170 have material receiving platform, tension detector and electric eye, material receiving platform is convenient to connect two isolation films front and rear, avoid the distribution of solid electrolyte on pole piece to appear interruption and discontinuity, and tension detector can ensure that isolation film is normally unwound, and isolation film is reasonably controlled, and electric eye can detect the quality of solid electrolyte on isolation film and the presence or absence of isolation film, avoid the emergence of defective products or the situation of not covering solid electrolyte on pole piece.
[0106] In some specific embodiments of the utility model, can make isolation film winding mechanism 180 have tension detector and electric eye, to monitor the winding process of isolation film, avoid waste accumulation and affect equipment work.
[0107] In some specific embodiments of the utility model, can make isolation film winding mechanism 180 include limit guide roller, limit guide roller is located in the tangent direction of the discharge side of covering roller 150, is favorable for extending the contact time of isolation film and pole piece, so that solid electrolyte is more firmly formed on pole piece.
[0108] And, the starting point of separation of solid electrolyte and isolation film starts from limit guide roller, does not affect the covering work of covering roller 150.
[0109] In some specific embodiments of the utility model, can make electrolyte transfer equipment include pole piece winding device, and pole piece winding device includes pole piece winding mechanism 190, located in the incoming material side of pole piece winding mechanism 190 Defect detector 200, and defect detector 200 is used to detect the surface quality of solid electrolyte on pole piece.
[0110] It is easy to understand that, the pole piece winding mechanism 190 can be set in the embodiment, the pole piece that the solid electrolyte of transfer is produced is wound, it is convenient to store, reduces the floor space.
[0111] Meanwhile, the solid-state electrolyte surface quality can be detected through the flaw detector 200, so that the separation of the solid-state electrolyte and the isolation film can be analyzed, and when there is more solid-state electrolyte remaining on the isolation film, the problem can be found early, so as to be adjusted.
[0112] In some specific embodiments of the utility model, the flaw detector 200 can be an image detection and analysis device, the surface quality of the electrolyte can be identified through image analysis, which is accurate and efficient and does not affect the winding of the pole piece.
[0113] In some specific embodiments of the utility model, the number of flaw detectors 200 can be two, so as to detect the two sides of the pole piece.
[0114] In the description of the specification, the description of the terms "one embodiment, some embodiments, illustrative embodiments, examples, specific examples or some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0115] The terms "first, second, third, fourth" and the like (if any) in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein.
[0116] It should also be noted that in the description of the specification, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or sequence between the entities or operations.
[0117] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can also include other steps or units not clearly listed or inherent to the process, method, product or device.
[0118] Also, the term "comprise", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.
[0119] The embodiments of the utility model are explained in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model.
Claims
1. An electrolyte transfer printing device, characterized in that, The electrolyte transfer device is used to transfer solid electrolyte from a separator to an electrode. The electrolyte transfer device includes a pre-pressing device (100), a preheating device (110), and a laminating device (120). The preheating device (110) is located between the pre-pressing device (100) and the laminating device (120). The pre-pressing device (100) is used to change the separator and the electrode from a separated state to a contact state. The preheating device (110) is used to heat the separator and the electrode in the contact state. The laminating device (120) is used to squeeze the heated separator and the electrode so that the solid electrolyte on the separator is transferred to the electrode. The solid electrolyte can be separated from the separator.
2. The electrolyte transfer equipment according to claim 1, characterized in that, The electrolyte transfer equipment is located on the discharge side of the dry coating equipment. The electrode sheet is dry coated and then enters the electrolyte transfer equipment for transfer.
3. The electrolyte transfer equipment according to claim 1, characterized in that, The number of the separators is two, and the electrode can be located between the two separators. One separator transfers the solid electrolyte to one side of the electrode, and the other separator transfers the solid electrolyte to the other side of the electrode.
4. The electrolyte transfer equipment according to claim 1, characterized in that, The pre-pressing device (100) includes a pair of pre-pressing rollers (130) that clamp and press the separator and the electrode sheet.
5. The electrolyte transfer equipment according to claim 1, characterized in that, The preheating device (110) includes a pair of infrared heaters (140) for heating the insulating membrane and the electrode, and the space between the pair of infrared heaters (140) allows the insulating membrane and the electrode to pass through.
6. The electrolyte transfer equipment according to claim 1, characterized in that, The laminating device (120) includes a pair of laminating rollers (150) that clamp and roll the separator and the electrode to transfer the solid electrolyte on the separator to the electrode.
7. The electrolyte transfer equipment according to claim 6, characterized in that, The laminating device (120) includes a hydraulic cylinder (160) that drives the laminating roller (150) to move relatively closer or further away.
8. The electrolyte transfer equipment according to claim 1, characterized in that, The electrolyte transfer equipment includes a film supply device, which includes a separator film unwinding mechanism (170) and a separator film winding mechanism (180). The separator film unwinding mechanism (170) is used to unwind a raw material roll, which is a roll of the separator film containing the solid electrolyte. The separator film winding mechanism (180) is used to wind out a waste roll, which is a roll of the separator film that has been transferred or has had the solid electrolyte removed.
9. The electrolyte transfer equipment according to claim 1, characterized in that, The electrolyte transfer equipment includes an electrode winding device, which includes an electrode winding mechanism (190) and a defect detector (200) located on the incoming side of the electrode winding mechanism (190). The defect detector (200) is used to detect the surface quality of the solid electrolyte on the electrode.
10. A solid-state battery production line, characterized in that, Includes the electrolyte transfer apparatus according to any one of claims 1 to 9.