Solid electrolyte coating system based on pressure-sensitive adhesive bonding

Abstract

The utility model provides a solid electrolyte coating system based on pressure-sensitive adhesive bonding. The solid electrolyte coating system comprises a base material roll, a pressure-sensitive adhesive photogravure press, a non-woven fabric roll, an electrostatic generator, a compression roller, an electrolyte coating machine and a winding device, a pressure-sensitive adhesive is coated on a base material output by a base material roll through a pressure-sensitive adhesive photogravure press to form a base material with the pressure-sensitive adhesive, non-woven fabric output by a non-woven fabric roll is electrostatically adsorbed on the base material with the pressure-sensitive adhesive through an electrostatic generator to form a to-be-bonded piece, and the to-be-bonded piece is pressurized through a compression roller to form a bonded piece. The output end of the pressing roller is connected with the input end of the electrolyte coating machine, and the output end of the electrolyte coating machine is connected with the input end of the winding device. The non-woven fabric and the base material are bonded through the pressure-sensitive adhesive, it can be guaranteed that the non-woven fabric can be completely attached to the base material in the conveying process, the problems of wrinkling and the like caused by tightening are avoided, and therefore it is guaranteed that the non-woven fabric can be evenly coated with solid electrolyte slurry.

Description

Technical Field

[0001] This utility model relates to the field of solid-state battery technology, specifically to a solid electrolyte coating system based on pressure-sensitive adhesive bonding. Background Technology

[0002] As the core energy transmission channel of a battery, the performance of the electrolyte membrane directly determines the battery's energy density, safety, cycle life, and operating temperature range. It is a key material that restricts the iteration of solid-state battery technology.

[0003] A Chinese patent with publication number CN109935893A discloses a solid electrolyte membrane composed of a strip of nonwoven fabric and a polymer solid electrolyte. The surface of the nonwoven fabric is coated with the polymer solid electrolyte.

[0004] However, in actual production, it is found that before entering the coating device, the non-woven fabric is very thin due to the long transmission distance. It is easy for it to wrinkle due to tension, which makes it impossible for the non-woven fabric to maintain a flat state after entering the coating device. This results in uneven coating of solid electrolyte slurry and a decrease in the yield of electrolyte membranes produced.

[0005] Therefore, there is a need to provide a solid electrolyte coating system based on pressure-sensitive adhesive bonding, which can solve the problem of wrinkling in nonwoven fabrics. Utility Model Content

[0006] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a solid electrolyte coating system based on pressure-sensitive adhesive bonding.

[0007] According to the present invention, a solid electrolyte coating system based on pressure-sensitive adhesive bonding is provided, comprising: a substrate roll, a pressure-sensitive adhesive gravure printing machine, a non-woven fabric roll, an electrostatic generator, a pressure roller, an electrolyte coating machine, and a winding device.

[0008] The output end of the substrate roll is connected to the input end of the pressure-sensitive adhesive gravure printing machine. The pressure-sensitive adhesive is coated onto the substrate output from the substrate roll by the pressure-sensitive adhesive gravure printing machine to form a pressure-sensitive adhesive substrate. The electrostatic generator is located downstream of the pressure-sensitive adhesive gravure printing machine, and the non-woven fabric roll is located upstream of the electrostatic generator. The non-woven fabric output from the non-woven fabric roll is electrostatically adsorbed onto the pressure-sensitive adhesive substrate by the electrostatic generator to form a part to be bonded. The pressure roller is located downstream of the electrostatic generator, and the part to be bonded is pressed by the pressure roller to form a bonded part. The output end of the pressure roller is connected to the input end of the electrolyte coating machine, and the output end of the electrolyte coating machine is connected to the input end of the winding device.

[0009] Preferably, the substrate of the substrate roll includes release paper or PET film, and the pressure-sensitive adhesive is applied to the upper surface of the substrate by a pressure-sensitive adhesive gravure printing machine.

[0010] Preferably, a deviation rectifying device is arranged on the moving path of both the pressure-sensitive adhesive base material output by the pressure-sensitive adhesive gravure printing machine and the non-woven fabric output by the non-woven fabric roll, and the coating range of the non-woven fabric and the pressure-sensitive adhesive is consistent.

[0011] Preferably, the pressure of the pressure roller is matched with the pressure-sensitive adhesive, and the non-woven fabric is attached to the upper surface of the base material through the pressure-sensitive adhesive.

[0012] Preferably, the weight range of the pressure of the pressure roller is 50-100 kg, and the peel strength of the adhesive piece is not more than 2 MPa.

[0013] Preferably, the electrolyte coating machine comprises, in sequence, a coating device and a drying device, the solid-state electrolyte slurry is coated on the non-woven fabric of the adhesive piece through the coating device, and the solid-state electrolyte slurry and the non-woven fabric are dried through the drying device to form a solid-state electrolyte film.

[0014] Preferably, a film tearing roller is further included, the film tearing roller is arranged downstream of the electrolyte coating machine and on the side close to the base material, and the base material is separated from the solid-state electrolyte film through the film tearing roller.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The utility model discloses a non-woven fabric and base material are adhered by pressure-sensitive adhesive, can guarantee that non-woven fabric can be completely attached with base material in the conveying process, avoid the occurrence of the problem of the wrinkle caused by the tightness, thereby guaranteeing that solid-state electrolyte slurry can be evenly coated on non-woven fabric, avoiding the waste of electrolyte slurry and the generation of substandard electrolyte film caused by the problem of non-woven fabric, and the like, and the system structure is simple, convenient to operate, low in production cost, high in finished product rate and capable of improving production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Other features, objects and advantages of the utility model will become more apparent through reading the following detailed description of non-restrictive embodiments with reference to the accompanying drawings:

[0018] Figure 1 The utility model mainly embodies the structure diagram of solid-state electrolyte coating system based on pressure-sensitive adhesive adhesion.

[0019] The drawings show that: base material roll 1, pressure-sensitive adhesive gravure printing machine 2, non-woven fabric roll 3, electrostatic generator 4, pressure roller 5, electrolyte coating machine 6, winding device 7, film tearing roller 8. DETAILED DESCRIPTION

[0020] The utility model will be instructed in detail below in combination with specific embodiments. The following embodiments will help the person skilled in the art to further understand the utility model, but do not limit the utility model in any form. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the utility model, a number of changes and improvements can be made. These all belong to the protection scope of the utility model.

[0021] As Figure 1 The utility model provides a kind of solid electrolyte coating system based on pressure-sensitive adhesive adhesion, including: base material roll 1, pressure-sensitive adhesive gravure printing machine 2, non-woven fabric roll 3, electrostatic generator 4, compression roller 5, electrolyte coating machine 6 and winding device 7;The output end of base material roll 1 is connected with the input end of pressure-sensitive adhesive gravure printing machine 2, and pressure-sensitive adhesive is coated on the base material output by base material roll 1 by pressure-sensitive adhesive gravure printing machine 2 to form base material with pressure-sensitive adhesive, electrostatic generator 4 is arranged downstream of pressure-sensitive adhesive gravure printing machine 2, non-woven fabric roll 3 is arranged upstream of electrostatic generator 4, and the non-woven fabric output by non-woven fabric roll 3 is electrostatically adsorbed on the base material with pressure-sensitive adhesive by electrostatic generator 4 to form to be adhered piece, compression roller 5 is arranged downstream of electrostatic generator 4, and to be adhered piece is formed into adhered piece by compression roller 5, the output end of compression roller 5 is connected with the input end of electrolyte coating machine 6, and the output end of electrolyte coating machine 6 is connected with the input end of winding device 7.

[0022] The base material of base material roll 1 includes release paper or PET film, and pressure-sensitive adhesive is coated on the upper surface of the base material by pressure-sensitive adhesive gravure printing machine 2. Since the base material and non-woven fabric need to be separated in the subsequent process, the pressure-sensitive adhesive only needs to be coated thinly, which can ensure the adhesion of the non-woven fabric to the base material and the easy separation in the subsequent process. The pressure-sensitive adhesive is stored in the mesh hole of the pressure-sensitive adhesive gravure printing machine 2, and then scraped flat by the scraper, which can accurately control the amount of adhesive and uniformly form a film.

[0023] The pressure of compression roller 5 matches the pressure-sensitive adhesive, which is generally selected according to the type and thickness of the pressure-sensitive adhesive, and the non-woven fabric is attached to the upper surface of the base material by the pressure-sensitive adhesive. Preferably, the weight range of compression roller 5 is 50-100 kg, and the peel strength of the adhered piece is not more than 2 MPa. In actual application, the distance between electrostatic generator 4 and compression roller 5 is as small as possible, so that the non-woven fabric can be adhered to the base material as soon as possible after adsorption, avoiding the problem of wrinkle caused by long-term tension of the non-woven fabric.

[0024] The moving path of the base material with pressure-sensitive adhesive output by pressure-sensitive adhesive gravure printing machine 2 and the non-woven fabric output by non-woven fabric roll 3 is provided with a deviation correcting device, and the coating range of the non-woven fabric and the pressure-sensitive adhesive is consistent, so that the non-woven fabric can be firmly adhered to the base material as a whole, avoiding the problem of wrinkle in the subsequent transmission process.

[0025] The electrolyte coating machine 6 comprises, in sequence, a coating device and a drying device, the solid electrolyte slurry is coated on the non-woven fabric of the adhesive member by the coating device, and the solid electrolyte slurry and the non-woven fabric are dried by the drying device to form a solid electrolyte film.

[0026] The present application also comprises a film tearing roller 8, which is arranged downstream of the electrolyte coating machine 6 and close to the substrate side, and the substrate is separated from the solid electrolyte film by the film tearing roller 8.

[0027] Further, in order to ensure the smooth operation of the electrolyte coating machine 6, a back roller or other structure is arranged upstream and downstream of the electrolyte coating machine 6, so that the adhesive member can enter and leave the electrolyte coating machine 6 horizontally, thereby ensuring the yield of the solid electrolyte film.

[0028] The operation process of the present application is as follows: the substrate roll 1 outputs the substrate to the input end of the pressure-sensitive adhesive intaglio printer 2, a layer of uniform pressure-sensitive adhesive is coated on the upper surface of the substrate by the pressure-sensitive adhesive intaglio printer 2, then the non-woven fabric output by the non-woven fabric roll 3 is electrostatically adsorbed on the coated area of the pressure-sensitive adhesive on the substrate by the electrostatic generator 4 to form a to-be-adhered member; then the to-be-adhered member is transported to the input end of the pressing roller 5, the to-be-adhered member is pressed by the pressing roller 5 to make the pressure-sensitive adhesive sticky, so that the non-woven fabric is firmly adhered to the upper surface of the substrate to form an adhesive member; then the adhesive member is transported to the input end of the electrolyte coating machine 6, the solid electrolyte slurry is coated on the non-woven fabric of the adhesive member by the coating device, and the solid electrolyte slurry and the non-woven fabric are dried by the drying device to form a solid electrolyte film, at this time, the solid electrolyte film is still adhered to the substrate, which can be directly sent to the winding device 7 for winding and transferred to other processes for next operation; further, in some processes only requiring the electrolyte film without the substrate, a film tearing roller 8 can be added downstream of the electrolyte coating machine 6, the solid electrolyte film is separated from the substrate by the film tearing roller 8, due to the non-sticky and easy-to-peel characteristics of the pressure-sensitive adhesive, the substrate can easily separate from the solid electrolyte film with the pressure-sensitive adhesive, so that the solid electrolyte film roll wound by the winding device 7 can directly enter the next process.

[0029] The present application can ensure that the non-woven fabric is completely attached to the substrate during transportation by using pressure-sensitive adhesive to adhere the non-woven fabric and the substrate, avoiding the occurrence of problems such as wrinkling caused by tension, thereby ensuring that the solid electrolyte slurry can be uniformly coated on the non-woven fabric, avoiding the occurrence of waste of electrolyte slurry and substandard electrolyte film due to problems of the non-woven fabric. The system of the present application has simple structure, convenient operation, low production cost, high yield and can improve production efficiency.

[0030] In the description of the present application, it needs to be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0031] The specific embodiments of the present application are described above. It needs to be understood that the present application is not limited to the specific embodiments described above, and various changes or modifications can be made by those skilled in the art within the scope of the claims, which does not affect the essential content of the present application. In the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A solid electrolyte coating system based on pressure-sensitive adhesive bonding, characterized in that, include: Substrate roll (1), pressure-sensitive adhesive gravure printing machine (2), non-woven fabric roll (3), electrostatic generator (4), pressure roller (5), electrolyte coating machine (6), and winding device (7); The output end of the substrate roll (1) is connected to the input end of the pressure-sensitive adhesive gravure printing machine (2). The pressure-sensitive adhesive is coated on the substrate output from the substrate roll (1) by the pressure-sensitive adhesive gravure printing machine (2) to form a pressure-sensitive adhesive substrate. The electrostatic generator (4) is located downstream of the pressure-sensitive adhesive gravure printing machine (2). The nonwoven fabric roll (3) is located upstream of the electrostatic generator (4). The nonwoven fabric output from the nonwoven fabric roll (3) is electrostatically adsorbed onto the pressure-sensitive adhesive substrate by the electrostatic generator (4) to form a bonded part. The pressure roller (5) is located downstream of the electrostatic generator (4). The bonded part is pressed by the pressure roller (5) to form a bonded part. The output end of the pressure roller (5) is connected to the input end of the electrolyte coating machine (6). The output end of the electrolyte coating machine (6) is connected to the input end of the winding device (7).

2. The solid electrolyte coating system based on pressure-sensitive adhesive as described in claim 1, characterized in that, The substrate of the substrate roll (1) includes release paper or PET film, and the pressure-sensitive adhesive is applied to the upper surface of the substrate by a pressure-sensitive adhesive gravure printing machine (2).

3. The solid electrolyte coating system based on pressure-sensitive adhesive as described in claim 2, characterized in that, The pressure-sensitive adhesive substrate output by the pressure-sensitive adhesive gravure printing machine (2) and the non-woven fabric output by the non-woven fabric roll (3) are both equipped with correction devices on their movement paths, and the coating range of the non-woven fabric and the pressure-sensitive adhesive is the same.

4. The solid electrolyte coating system based on pressure-sensitive adhesive as described in claim 3, characterized in that, The pressure of the pressure roller (5) is matched with the pressure-sensitive adhesive, and the nonwoven fabric is bonded to the upper surface of the substrate by the pressure-sensitive adhesive.

5. The solid electrolyte coating system based on pressure-sensitive adhesive as described in claim 4, characterized in that, The pressure roller (5) applies pressure in the range of 50-100 kg, and the peel strength of the adhesive does not exceed 2 MPa.

6. The solid electrolyte coating system based on pressure-sensitive adhesive as described in claim 1, characterized in that, The electrolyte coating machine (6) includes a coating device and a drying device arranged in sequence. The solid electrolyte slurry is coated onto the nonwoven fabric of the adhesive through the coating device, and the solid electrolyte slurry and the nonwoven fabric are dried by the drying device to form a solid electrolyte film.

7. The solid electrolyte coating system based on pressure-sensitive adhesive as described in claim 6, characterized in that, It also includes a film-peeling roller (8), which is located downstream of the electrolyte coating machine (6) and on the side close to the substrate, the substrate being separated from the solid electrolyte membrane by the film-peeling roller (8).

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