Solid electrolyte coating diaphragm preparation device

Abstract

The utility model discloses a solid electrolyte coating diaphragm preparation device which comprises an unwinding mechanism, a coating mechanism, a hot air drying mechanism, a microwave drying mechanism and a winding mechanism which are sequentially arranged, and the unwinding mechanism is used for unwinding and flattening a base membrane; the coating mechanism is used for coating the surface of the base membrane with a solid electrolyte coating, so that the base membrane becomes a solid electrolyte coating diaphragm; the hot air drying mechanism is used for drying free water on the surface of the solid electrolyte coating; the microwave drying mechanism is used for evaporating and drying bound water in the solid electrolyte coating; and the winding mechanism is used for winding the dried solid electrolyte coating diaphragm. Through the dual effects of the hot air drying mechanism and the microwave drying mechanism, the moisture of the solid electrolyte coating diaphragm is rapidly reduced within an extremely short time, and the quality of the solid electrolyte coating diaphragm can be ensured, so that the use requirements of a battery end are met.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium ion battery diaphragm material preparation, in particular to a solid electrolyte coating diaphragm preparation device. Background Art

[0002] Currently, lithium-ion batteries are widely used in 3C products, energy storage and electric vehicles. With people's continuous pursuit of high-energy-density batteries, key battery materials, such as battery separators, are also constantly changing, from the initial pure PE separator to PE separators with inorganic inert coatings, such as alumina ceramic coated separators.

[0003] Nowadays, the third generation of diaphragms using solid electrolyte coated PE or PP is developing rapidly. However, unlike inert materials, solid electrolytes contain lithium, which makes them highly absorbent. Therefore, solid electrolyte coated diaphragms have very high water content, and the high water content of diaphragms is very unfavorable to the performance of batteries, which may cause short circuits in batteries, decreased cycle performance and other adverse effects.

[0004] Currently, high-temperature baking is usually used to remove water from the diaphragm. However, due to the poor heat resistance of the diaphragm, the baking temperature cannot be too high, which results in a large amount of bound water in the diaphragm that cannot be removed. Moreover, high-temperature baking is time-consuming and energy-consuming, and the quality of the diaphragm will be greatly reduced due to long-term baking. Therefore, the high water content of solid electrolyte coated diaphragms has become an obstacle to their development and application.

[0005] Therefore, how to rapidly reduce the moisture content of the solid electrolyte coating diaphragm in a very short time while ensuring the quality of the solid electrolyte coating diaphragm to meet the use requirements of the battery end is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0006] In view of this, the purpose of the utility model is to provide a solid electrolyte coating diaphragm preparation device, which can rapidly reduce the moisture content of the solid electrolyte coating diaphragm in a very short time, and can also ensure the quality of the solid electrolyte coating diaphragm, thereby meeting the use requirements of the battery end.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A solid electrolyte coating membrane preparation device comprises an unwinding mechanism, a coating mechanism, a hot air drying mechanism, a microwave drying mechanism and a winding mechanism which are arranged in sequence;

[0009] The unwinding mechanism is used to unwind and flatten the base film;

[0010] The coating mechanism is used to coat the solid electrolyte coating on the surface of the base film, so that the base film becomes a solid electrolyte coating diaphragm;

[0011] The hot air drying mechanism is used to dry the free water on the surface of the solid electrolyte coating;

[0012] The microwave drying mechanism is used to evaporate and dry the bound water inside the solid electrolyte coating;

[0013] The winding mechanism is used to wind up the dried solid electrolyte coating diaphragm.

[0014] Optionally, the unwinding mechanism comprises at least an unwinding shaft, a flattening roller and a first tension roller;

[0015] The unwinding shaft is used to fix the base film, the flattening roller is used to flatten the base film, and the first tension roller is used to adjust the tension of the base film.

[0016] Optionally, it also includes a first roller arranged between the unwinding mechanism and the coating mechanism, and the first roller can transport the diaphragm from the unwinding mechanism to the coating mechanism.

[0017] Optionally, a second roller is further included, which is arranged between the coating mechanism and the hot air drying mechanism, and the second roller can transport the solid electrolyte coating membrane from the coating mechanism to the hot air drying mechanism.

[0018] Optionally, it further includes a third roller, which is arranged in the hot air drying mechanism;

[0019] The hot air drying mechanism is a hot air oven, which includes a hot air oven body, and a first hot air outlet and a second hot air outlet arranged on the hot air oven body. The third roller is arranged between the first hot air outlet and the second hot air outlet, and the solid electrolyte coating diaphragm is transported by the third roller.

[0020] Optionally, there are multiple first hot air outlets and multiple second hot air outlets, and they are evenly distributed at both ends of the hot air oven body;

[0021] The first hot air outlet and the second hot air outlet both correspond to the center of the central axis of the third roller.

[0022] Optional, the working temperature of the hot air oven is 30℃-60℃, and the hot air volume of the hot air oven is 800m 3 / h-3000m 3 / h;

[0023] The outer surface of the hot air oven is wrapped with thermal insulation material.

[0024] Optionally, it also includes a cold pressing roller, which is arranged in the microwave drying mechanism;

[0025] The microwave drying mechanism comprises a microwave drying mechanism body, a first microwave generator and a second microwave generator, the first microwave generator and the second microwave generator are symmetrically arranged at two ends of the microwave drying mechanism body, a cold pressing roller is arranged between the first microwave generator and the second microwave generator, and the solid electrolyte coating diaphragm enters the winding mechanism through the cold pressing roller.

[0026] Optionally, the distances between the first microwave generator, the second microwave generator and the solid electrolyte coating membrane are both 200 mm-500 mm.

[0027] Optionally, there are multiple first microwave generators and multiple second microwave generators, and the spacing between any two adjacent first microwave generators is 300 mm-500 mm, and the spacing between any two adjacent second microwave generators is 300 mm-500 mm.

[0028] Optionally, each of the first microwave generator and the second microwave generator has a different adjustment power;

[0029] The first microwave generator and the second microwave generator each include a primary microwave generator, a secondary microwave generator, a tertiary microwave generator and a quaternary microwave generator;

[0030] The power of the first-level microwave generator is 500w-1000w, and the frequency is 2000MHz-2500MHz. The power of the second-level microwave generator is 2000w-3000w, and the frequency is 400MHz-450MHz. The power of the third-level microwave generator is 1000w-2000w, and the frequency is 900MHz-950MHz. The power of the fourth-level microwave generator is 500w-1000w, and the frequency is 2000MHz-2500MHz.

[0031] Optionally, the microwave drying mechanism further includes an air inlet and an air outlet. The air inlet is arranged at the top of the starting end of the microwave drying mechanism body. The air volume of the air inlet is 500m 3 / h-5000m 3 / h, the induced air medium is dry air, and the moisture content of the induced air medium is less than 100ppm;

[0032] The exhaust port is located at the lower end of the microwave drying mechanism, and the exhaust volume of the exhaust port is 500m 3 / h-5000m 3 / h.

[0033] Optionally, the inner cavity wall of the microwave drying mechanism body is also provided with a microwave absorbing coating, and the material of the microwave absorbing coating is ferrite, zinc oxide, cobalt oxide, carbon nanotubes, graphene or epoxy resin.

[0034] Optionally, the microwave drying mechanism further includes a temperature and humidity sensor and / or a pressure sensor;

[0035] The temperature and humidity sensor is arranged in the inner cavity of the microwave drying mechanism body, and is used to detect the temperature and humidity of the inner cavity of the microwave drying mechanism body;

[0036] The pressure sensor is arranged in the inner cavity of the microwave drying mechanism body and is used for detecting the pressure of the inner cavity of the microwave drying mechanism body.

[0037] Optionally, the winding mechanism includes a second tension roller, an adjusting roller and a winding reel, the winding reel is used to fix the solid electrolyte coating membrane, the tension roller is used to adjust the tension of the solid electrolyte coating membrane, and the adjusting roller is used to adjust the position of the solid electrolyte coating membrane to correct the solid electrolyte coating membrane.

[0038] It can be seen from the above technical scheme that when preparing a solid electrolyte coating membrane, the base film is first installed on the unwinding mechanism, and the base film is unrolled and flattened by the unwinding mechanism so that the base film reaches the coating mechanism, and the solid electrolyte coating is coated on the surface of the base film by the coating mechanism so that the base film becomes a solid electrolyte coating membrane. After the coating is completed, the solid electrolyte coating membrane is transported to the hot air drying mechanism to dry the free water on the surface of the solid electrolyte coating, and then the solid electrolyte coating membrane is transported to the microwave drying mechanism for drying, and the bound water inside the solid electrolyte coating is evaporated and dried, and finally the dried solid electrolyte coating membrane is rolled up by the winding mechanism.

[0039] Compared with the prior art, the solid electrolyte coating diaphragm preparation device disclosed in the utility model has a hot air drying mechanism and a microwave drying mechanism arranged in sequence after the coating mechanism. Therefore, the free water on the surface of the solid electrolyte coating can be dried by the hot air drying mechanism to achieve the initial dehydration of the solid electrolyte coating diaphragm, and the bound water inside the solid electrolyte coating can be evaporated and dried by the microwave drying mechanism to achieve deep dehydration of the solid electrolyte coating diaphragm. In this way, the hot air drying mechanism only needs to be set to a lower temperature. Through the dual effects of the hot air drying mechanism and the microwave drying mechanism, not only the moisture content of the solid electrolyte coating diaphragm can be rapidly reduced in a very short time, but also the quality of the solid electrolyte coating diaphragm can be guaranteed, thereby effectively meeting the use requirements of the battery end. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0041] Figure 1 This is a schematic structural diagram of a solid electrolyte coating diaphragm preparation device disclosed in an embodiment of the utility model.

[0042] The names of the components are as follows:

[0043] 1. Base film; 2. Unwinding shaft; 3. Flattening roller; 4. First tension roller; 5. First passing roller; 6. Coating roller; 7. Second passing roller; 8. Hot air oven body; 81. First hot air outlet; 82. Second hot air outlet; 83. Third passing roller; 9. Microwave drying mechanism body; 91. First microwave generator; 92. Second microwave generator; 93. Air inlet; 94. Exhaust outlet; 95. Temperature and humidity sensor; 10. Cold pressing roller; 11. Microwave absorbing coating; 12. Second tension roller; 13. Adjusting roller; 14. Winding reel. DETAILED DESCRIPTION

[0044] In view of this, the core of the utility model is to provide a solid electrolyte coating diaphragm preparation device, which can rapidly reduce the moisture content of the solid electrolyte coating diaphragm in a very short time, and can also ensure the quality of the solid electrolyte coating diaphragm, thereby meeting the use requirements of the battery end.

[0045] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0046] Please refer to Figure 1 , Figure 1 This is a schematic structural diagram of a solid electrolyte coating diaphragm preparation device disclosed in an embodiment of the utility model.

[0047] The solid electrolyte coating membrane preparation device disclosed in the embodiment of the utility model comprises an unwinding mechanism, a coating mechanism, a hot air drying mechanism, a microwave drying mechanism and a winding mechanism which are arranged in sequence. Among them, the unwinding mechanism is used to unwind and flatten the base film 1; the coating mechanism is used to coat the solid electrolyte coating on the surface of the base film 1 so that the base film becomes a solid electrolyte coating membrane; the hot air drying mechanism is used to dry the free water on the surface of the solid electrolyte coating; the microwave drying mechanism is used to evaporate and dry the bound water inside the solid electrolyte coating; the winding mechanism is used to wind up the dried solid electrolyte coating membrane.

[0048] When preparing a solid electrolyte coating membrane, firstly, the base film 1 is installed on a unwinding mechanism, and the base film 1 is unrolled and flattened by the unwinding mechanism, so that the base film 1 reaches the coating mechanism, and the solid electrolyte coating is coated on the surface of the base film 1 by the coating mechanism, so that the base film becomes a solid electrolyte coating membrane. After the coating is completed, the solid electrolyte coating membrane is transported to a hot air drying mechanism to dry the free water on the surface of the solid electrolyte coating, and then the solid electrolyte coating membrane is transported to a microwave drying mechanism for drying, and the bound water inside the solid electrolyte coating is evaporated and dried, and finally the dried solid electrolyte coating membrane is rolled up by a winding mechanism.

[0049] Compared with the prior art, the solid electrolyte coating diaphragm preparation device disclosed in the embodiment of the utility model has a hot air drying mechanism and a microwave drying mechanism arranged in sequence after the coating mechanism. Therefore, the free water on the surface of the solid electrolyte coating can be dried by the hot air drying mechanism to achieve the initial dehydration of the solid electrolyte coating diaphragm, and the bound water inside the solid electrolyte coating can be evaporated and dried by the microwave drying mechanism to achieve deep dehydration of the solid electrolyte coating diaphragm. In this way, the hot air drying mechanism only needs to be set to a lower temperature. Through the dual effects of the hot air drying mechanism and the microwave drying mechanism, not only the moisture content of the solid electrolyte coating diaphragm can be rapidly reduced in a very short time, but also the quality of the solid electrolyte coating diaphragm can be guaranteed, thereby effectively meeting the use requirements of the battery end.

[0050] The embodiments of the present invention do not limit the specific structure of the unwinding mechanism. As long as the structure meets the use requirements of the present invention, it is within the protection scope of the present invention.

[0051] As one possible embodiment, the unwinding mechanism disclosed in the embodiment of the utility model at least includes an unwinding shaft 2 , a flattening roller 3 and a first tension roller 4 .

[0052] The unwinding shaft 2 is used to fix the base film 1 , the flattening roller 3 is used to flatten the base film 1 , and the first tension roller 4 is used to adjust the tension of the base film 1 .

[0053] In order to smoothly transport the base film 1 from the unwinding mechanism to the coating mechanism, the solid electrolyte coating membrane preparation device disclosed in the embodiment of the utility model also includes a first roller 5 arranged between the unwinding mechanism and the coating mechanism, and the first roller 5 can transport the base film 1 from the unwinding mechanism to the coating mechanism.

[0054] As a further embodiment, the solid electrolyte coating membrane preparation device disclosed in the embodiment of the utility model further includes a second roller 7, wherein the second roller 7 is arranged between the coating mechanism and the hot air drying mechanism, and the second roller 7 can transport the solid electrolyte coating membrane from the coating mechanism to the hot air drying mechanism.

[0055] The embodiments of the present invention do not limit the specific structure of the coating mechanism. As long as the structure meets the use requirements of the present invention, it is within the protection scope of the present invention.

[0056] As one possible embodiment, the coating head of the coating mechanism disclosed in the embodiment of the utility model can be a gravure coating structure, can be an extrusion coating structure, and of course can be other structures. The embodiment of the utility model does not make specific limitations on this. As long as the structure meets the use requirements of the utility model, it is within the protection scope of the utility model.

[0057] As a further embodiment, the solid electrolyte coating membrane preparation device disclosed in the embodiment of the utility model further includes a third roller 83, wherein the third roller 83 is arranged in the hot air drying mechanism.

[0058] The embodiments of the present invention do not limit the specific structure of the hot air drying mechanism. As long as the structure meets the use requirements of the present invention, it is within the protection scope of the present invention.

[0059] As one possible embodiment, the hot air drying mechanism disclosed in the embodiment of the utility model is a hot air oven, wherein the hot air oven includes a hot air oven body 8, and a first hot air outlet 81 and a second hot air outlet 82 arranged on the hot air oven body 8.

[0060] The third roller 83 is disposed between the first hot air outlet 81 and the second hot air outlet 82 , and the solid electrolyte coating membrane is transported through the third roller 83 .

[0061] In order to improve the drying effect of the solid electrolyte coating diaphragm, the first hot air outlet 81 and the second hot air outlet 82 disclosed in the embodiment of the utility model are both multiple and evenly distributed at both ends of the hot air oven body 8.

[0062] The first hot air outlet 81 and the second hot air outlet 81 both correspond to the center of the central axis of the third roller 83. In this way, when the solid electrolyte coating membrane passes through the third roller 83, the blown hot air can be aligned with the solid electrolyte coating membrane, thereby improving the drying effect of the solid electrolyte coating membrane within a limited time.

[0063] The embodiments of the present invention do not specifically limit the working temperature and hot air volume of the hot air oven. As long as the working temperature and hot air volume meet the use requirements of the present invention, they are within the protection scope of the present invention.

[0064] In order to ensure the quality of the solid electrolyte coating diaphragm, the working temperature of the hot air oven disclosed in the embodiment of the utility model is 30℃-60℃, and the hot air volume of the hot air oven is 800m3 / h-3000m 3 / h.

[0065] As a further embodiment, the outer layer of the hot air oven disclosed in the embodiment of the utility model is wrapped with a thermal insulation material. Such a configuration can effectively reduce the temperature loss rate in the hot air oven, thereby further improving the drying effect of the solid electrolyte coating diaphragm.

[0066] In order to improve the good winding effect, the solid electrolyte coating membrane preparation device disclosed in the embodiment of the utility model further includes a cold pressing roller 10, wherein the cold pressing roller 10 is arranged in the microwave drying mechanism.

[0067] When the solid electrolyte coating membrane passes through the microwave drying mechanism, the solid electrolyte coating membrane can be rolled and flattened by the cold pressing roller 10, thereby further improving the good winding effect at the rear end.

[0068] The embodiments of the present invention do not limit the specific structure of the microwave drying mechanism. As long as the structure meets the use requirements of the present invention, it is within the protection scope of the present invention.

[0069] As one possible embodiment, the microwave drying mechanism disclosed in the embodiment of the utility model includes a microwave drying mechanism body 9, a first microwave generator 91 and a second microwave generator 92, wherein the first microwave generator 91 and the second microwave generator 92 are symmetrically arranged at both ends of the microwave drying mechanism body 9, and a cold pressing roller 10 is arranged between the first microwave generator 91 and the second microwave generator 92, and the solid electrolyte coating diaphragm is rolled and flattened by the cold pressing roller 10 and then enters the winding mechanism.

[0070] When the solid electrolyte coating membrane enters into the microwave drying mechanism body 9, the first microwave generator 91 and the second microwave generator 92 are started, and the first microwave generator 91 and the second microwave generator 92 can dry the solid electrolyte coating membrane.

[0071] The embodiment of the utility model does not limit the arrangement of the cold pressing roller 10. As long as the arrangement meets the use requirements of the utility model, it is within the protection scope of the utility model.

[0072] As one possible embodiment, the cold pressing roller 10 disclosed in the embodiment of the utility model includes an upper roller body and a lower roller body arranged in pairs, wherein the number of cold pressing rollers 10 can be multiple pairs, and the roller bodies are evenly distributed along the length direction of the microwave drying mechanism body 9, and the solid electrolyte coating diaphragm passes through the gap between the upper roller body and the lower roller body to achieve rolling and flattening of the solid electrolyte coating diaphragm.

[0073] The embodiment of the utility model does not limit the specific material of the cold pressing roller 10. As long as the structure meets the use requirements of the utility model, it is within the protection scope of the utility model.

[0074] The cold pressing roller 10 may be a chrome-plated aluminum roller, a stainless steel roller, or other materials, which is not limited in the embodiment of the present invention.

[0075] It should be noted that the specific distances between the first microwave generator 91 and the second microwave generator 92 and the solid electrolyte coating membrane may be equal or unequal, and those skilled in the art may make the selection according to actual needs.

[0076] As a preferred embodiment, the distance between the first microwave generator 91 and the second microwave generator 92 disclosed in the embodiment of the utility model and the solid electrolyte coating membrane is 200 mm-500 mm.

[0077] The embodiment of the utility model does not limit the specific number of the first microwave generator 91 and the second microwave generator 92. As long as the number meets the use requirements of the utility model, it is within the protection scope of the utility model.

[0078] As one possible embodiment, the first microwave generator 91 and the second microwave generator 92 disclosed in the embodiment of the utility model are both multiple, wherein the spacing between any two adjacent first microwave generators 91 is 300mm-500mm, and the spacing between any two adjacent second microwave generators 92 is 300mm-500mm.

[0079] In order to further improve the drying efficiency of the solid electrolyte coating membrane and reduce energy consumption, the first microwave generator 91 and the second microwave generator 92 disclosed in the embodiment of the utility model both have different adjustment powers.

[0080] Among them, the first microwave generator 91 and the second microwave generator 92 disclosed in the embodiment of the utility model both include a primary microwave generator, a secondary microwave generator, a tertiary microwave generator and a quaternary microwave generator.

[0081] The embodiments of the utility model do not limit the specific adjustment power of the first-stage microwave generator, the second-stage microwave generator, the third-stage microwave generator and the fourth-stage microwave generator. As long as the power meets the use requirements of the utility model, it is within the protection scope of the utility model.

[0082] As one possible embodiment, the power of the first-stage microwave generator disclosed in the embodiment of the utility model is 500w-1000w, and the frequency is 2000MHz-2500MHz, the power of the second-stage microwave generator is 2000w-3000w, and the frequency is 400MHz-450MHz, the power of the third-stage microwave generator is 1000w-2000w, and the frequency is 900MHz-950MHz, and the power of the fourth-stage microwave generator is 500w-1000w, and the frequency is 2000MHz-2500MHz.

[0083] As a further embodiment, the microwave drying mechanism disclosed in the embodiment of the utility model further includes an air inlet 93 and an air outlet 94 .

[0084] The air inlet 93 is arranged at the top of the starting end of the microwave drying mechanism body 9, and the air inlet 93 has an air volume of 500m 3 / h-5000m 3 / h, the induced draft medium is dry air, and the moisture content of the induced draft medium is less than 100ppm.

[0085] The exhaust port 94 is arranged at the lower part of the rear end of the microwave drying mechanism body 9, and the exhaust volume of the exhaust port 94 is 500m 3 / h-5000m 3 / h.

[0086] With such arrangement, dry air can be introduced into the microwave drying mechanism body 9 through the air inlet 93 to further dry the solid electrolyte coating membrane, and gaseous water in the microwave drying mechanism body 9 can be quickly discharged through the air outlet 94 .

[0087] As a further embodiment, the inner cavity wall of the microwave drying mechanism body 9 disclosed in the embodiment of the utility model is also provided with a microwave absorbing coating 11, wherein the microwave absorbing coating 11 can absorb and convert the residual microwave energy and discharge it outside the microwave drying mechanism body 9, thereby avoiding the first microwave generator and the second microwave generator from being idle due to low moisture content of the solid electrolyte coating diaphragm, thereby damaging the service life of the first microwave generator and the second microwave generator.

[0088] The embodiments of the present invention do not limit the specific material of the microwave absorbing coating. As long as the material meets the use requirements of the present invention, it is within the protection scope of the present invention.

[0089] The material of the microwave absorbing coating may be ferrite, zinc oxide, cobalt oxide, carbon nanotubes, graphene, or epoxy resin.

[0090] As a further embodiment, the microwave drying mechanism disclosed in the embodiment of the utility model also includes a temperature and humidity sensor and / or a pressure sensor, wherein the temperature and humidity sensor is arranged in the inner cavity of the microwave drying mechanism body 9, and is used to detect the temperature and humidity of the inner cavity of the microwave drying mechanism body 9, so that the solid electrolyte coating diaphragm after microwave treatment is at a lower water content, and the pressure sensor is arranged in the inner cavity of the microwave drying mechanism body, and is used to detect the pressure of the inner cavity of the microwave drying mechanism body 9, so that the microwave drying mechanism body 9 maintains a positive pressure, so that the wet steam in the microwave drying mechanism body 9 is quickly discharged.

[0091] The embodiments of the present invention do not limit the winding mechanism, and any structure that meets the use requirements of the present invention is within the protection scope of the present invention.

[0092] As one possible embodiment, the winding mechanism disclosed in the embodiment of the utility model includes a second tension roller 12, an adjusting roller 13 and a winding reel 14, wherein the winding reel 14 is used to fix the solid electrolyte coating membrane, the second tension roller 12 is used to adjust the tension of the solid electrolyte coating membrane, and the adjusting roller 13 is used to adjust the position of the solid electrolyte coating membrane to achieve deviation correction of the solid electrolyte coating membrane.

[0093] It should be noted that the winding mechanism needs to be located in a drying room with a dew point below -40°C.

[0094] The base film 1 is made of PP or PE material with a thickness of 5 microns to 30 microns.

[0095] Finally, it should be noted that, in this article, relational terms such as first and second, etc. 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 order between these entities or operations. Moreover, the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0096] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0097] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A solid electrolyte coating membrane preparation device, characterized in that: It includes an unwinding mechanism, a coating mechanism, a hot air drying mechanism, a microwave drying mechanism and a winding mechanism which are arranged in sequence; The unwinding mechanism is used to unwind and flatten the base film; The coating mechanism is used to coat the surface of the base film with a solid electrolyte coating, so that the base film becomes a solid electrolyte coating diaphragm; The hot air drying mechanism is used to dry the free water on the surface of the solid electrolyte coating; The microwave drying mechanism is used to evaporate and dry the bound water inside the solid electrolyte coating; The winding mechanism is used to wind up the dried solid electrolyte coating membrane.

2. The solid electrolyte coating membrane preparation device according to claim 1, characterized in that: The unwinding mechanism at least comprises an unwinding shaft, a flattening roller and a first tension roller; The unwinding shaft is used to fix the base film, the flattening roller is used to flatten the base film, and the first tension roller is used to adjust the tension of the base film.

3. The solid electrolyte coating membrane preparation device according to claim 1, characterized in that: It also includes a first roller disposed between the unwinding mechanism and the coating mechanism, and the first roller can transport the diaphragm from the unwinding mechanism to the coating mechanism.

4. The solid electrolyte coating membrane preparation device according to claim 1, characterized in that: It also includes a second roller, which is arranged between the coating mechanism and the hot air drying mechanism, and the second roller can transport the solid electrolyte coating membrane from the coating mechanism to the hot air drying mechanism.

5. The solid electrolyte coating membrane preparation device according to claim 1, characterized in that: It also includes a third roller, which is arranged in the hot air drying mechanism; The hot air drying mechanism is a hot air oven, which includes a hot air oven body, and a first hot air outlet and a second hot air outlet arranged on the hot air oven body. The third roller is arranged between the first hot air outlet and the second hot air outlet, and the solid electrolyte coating diaphragm is transported by the third roller.

6. The solid electrolyte coating membrane preparation device according to claim 5, characterized in that: The first hot air outlet and the second hot air outlet are both multiple and evenly distributed at both ends of the hot air oven body; The first hot air outlet and the second hot air outlet both correspond to the center of the central axis of the third roller.

7. The solid electrolyte coating membrane preparation device according to claim 5, characterized in that: The working temperature of the hot air oven is 30℃-60℃, and the hot air volume of the hot air oven is 800m 3 / h-3000m 3 / h; The outer surface of the hot air oven is wrapped with a heat-insulating material.

8. The solid electrolyte coating membrane preparation device according to claim 1, characterized in that: It also includes a cold pressing roller, which is arranged in the microwave drying mechanism; The microwave drying mechanism comprises a microwave drying mechanism body, a first microwave generator and a second microwave generator, wherein the first microwave generator and the second microwave generator are symmetrically arranged at two ends of the microwave drying mechanism body, the cold pressing roller is arranged between the first microwave generator and the second microwave generator, and the solid electrolyte coating diaphragm enters the winding mechanism through the cold pressing roller.

9. The solid electrolyte coating membrane preparation device according to claim 8, characterized in that: The distances between the first microwave generator, the second microwave generator and the solid electrolyte coating membrane are both 200 mm-500 mm.

10. The solid electrolyte coating membrane preparation device according to claim 8, characterized in that: There are multiple first microwave generators and multiple second microwave generators, and the distance between any two adjacent first microwave generators is 300mm-500mm, and the distance between any two adjacent second microwave generators is 300mm-500mm.

11. The solid electrolyte coating membrane preparation device according to claim 8, characterized in that: Each of the first microwave generator and the second microwave generator has a different adjustment power; The first microwave generator and the second microwave generator each include a primary microwave generator, a secondary microwave generator, a tertiary microwave generator and a quaternary microwave generator; The power of the first-stage microwave generator is 500w-1000w, and the frequency is 2000MHz-2500MHz. The power of the second-stage microwave generator is 2000w-3000w, and the frequency is 400MHz-450MHz. The power of the third-stage microwave generator is 1000w-2000w, and the frequency is 900MHz-950MHz. The power of the fourth-stage microwave generator is 500w-1000w, and the frequency is 2000MHz-2500MHz.

12. The solid electrolyte coating membrane preparation device according to claim 8, characterized in that: The microwave drying mechanism also includes an air inlet and an air outlet. The air inlet is arranged at the top of the starting end of the microwave drying mechanism body. The air inlet has an air volume of 500m 3 / h-5000m 3 / h, the induced air medium is dry air, and the moisture content of the induced air medium is less than 100ppm; The exhaust port is arranged at the lower part of the rear end of the microwave drying mechanism body, and the exhaust volume of the exhaust port is 500m 3 / h-5000m 3 / h.

13. The solid electrolyte coating membrane preparation device according to claim 8, characterized in that: The inner cavity wall of the microwave drying mechanism body is also provided with a microwave absorbing coating, and the material of the microwave absorbing coating is ferrite, zinc oxide, cobalt oxide, carbon nanotubes, graphene or epoxy resin.

14. The solid electrolyte coating membrane preparation device according to claim 8, characterized in that: The microwave drying mechanism also includes a temperature and humidity sensor and / or a pressure sensor; The temperature and humidity sensor is arranged in the inner cavity of the microwave drying mechanism body, and is used to detect the temperature and humidity of the inner cavity of the microwave drying mechanism body; The pressure sensor is arranged in the inner cavity of the microwave drying mechanism body and is used to detect the pressure of the inner cavity of the microwave drying mechanism body.

15. The solid electrolyte coating membrane preparation device according to claim 1, characterized in that: The winding mechanism includes a second tension roller, an adjusting roller and a winding reel, wherein the winding reel is used to fix the solid electrolyte coating membrane, the tension roller is used to adjust the tension of the solid electrolyte coating membrane, and the adjusting roller is used to adjust the position of the solid electrolyte coating membrane to correct the deviation of the solid electrolyte coating membrane.

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