Solid electrolyte coating system based on pet film and non-woven fabric

Abstract

The utility model provides a solid electrolyte coating system based on a pet film and a non-woven fabric. The solid electrolyte coating system comprises a pet film roll, a non-woven fabric roll, an electrostatic generator, a back roller, an electrolyte coating machine, a film tearing roller and a winding machine, the output end of the pet film roll and the output end of the non-woven fabric roll are connected with the input end of the back roller, and the electrostatic generator is arranged on the upstream of the back roller. The output end of the back roller is connected with the input end of the electrolyte coating machine, a coating device and a drying device are arranged in the electrolyte coating machine, and the output end of the electrolyte coating machine is connected with the film tearing roller and the winding machine. According to the utility model, the non-woven fabric is attached to the pet membrane, so that solid electrolyte slurry can completely permeate into the non-woven fabric and cannot leak out, and the solid electrolyte slurry can be uniformly coated on the non-woven fabric, thereby producing a qualified electrolyte membrane; the structure is simple, operation is convenient, production cost is greatly reduced, and large-scale production is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of solid-state batteries, and in particular to a solid electrolyte coating system based on PET film and non-woven fabric. Background Art

[0002] Solid-state batteries, a battery technology that uses solid-state electrolytes, offer key advantages in safety, energy density, and stability, and are considered a key development direction for next-generation batteries. These batteries primarily consist of a solid-state electrolyte, a positive electrode, a negative electrode, and a current collector. Some systems require a support layer to aid in molding, and non-woven fabrics are commonly used as this support layer in existing technologies.

[0003] The existing Chinese patent with publication number CN109935893A discloses a solid electrolyte membrane, which is composed of a strip of non-woven fabric and a polymer solid electrolyte. The surface of the non-woven fabric is coated with a polymer solid electrolyte.

[0004] However, the existing non-woven fabric coating technology may cause uneven slurry penetration due to the random distribution of non-woven fabric fibers, especially in thin coating scenarios, which is prone to thickness fluctuations and affects the consistency of electrolyte performance.

[0005] Therefore, it is necessary to provide a solid electrolyte coating system based on PET film and non-woven fabric, which can ensure uniform penetration and consistent thickness of the non-woven fabric. Utility Model Content

[0006] In view of the defects in the prior art, the purpose of the present invention is to provide a solid electrolyte coating system based on PET film and non-woven fabric.

[0007] According to the utility model, a solid electrolyte coating system based on PET film and non-woven fabric is provided, which includes: a PET film roll, a non-woven fabric roll, an electrostatic generator, a backing roller, an electrolyte coating machine, a film tearing roller, and a winding machine;

[0008] The output ends of the PET film roll and the non-woven fabric roll are both connected to the input end of the backing roller, and the electrostatic generator is arranged upstream of the backing roller. The PET film and non-woven fabric outputted by the PET film roll and the non-woven fabric roll are electrostatically adsorbed and bonded by the electrostatic generator to form an object to be coated, and the object to be coated is wound on the backing roller;

[0009] The output end of the backing roller is connected to the input end of the electrolyte coating machine. The electrolyte coating machine includes a coating device and a drying device. The output end of the electrolyte coating machine is connected to the film tearing roller and the winding machine respectively.

[0010] Preferably, the coating device comprises a coating scraper, and the output end of the coating device is arranged in contact with the non-woven fabric.

[0011] Preferably, the solid electrolyte slurry is coated on the non-woven fabric of the to-be-coated member by a coating device, and the solid electrolyte slurry completely penetrates the non-woven fabric and extends onto the PET film.

[0012] Preferably, the coating thickness of the electrolyte coating machine is between 30-50 μm.

[0013] Preferably, the output end of the electrolyte coating machine outputs the cured PET film and the electrolyte membrane, the film-tearing roller is arranged on a side close to the PET film, and the electrolyte membrane is wound by a winder.

[0014] Preferably, a deviation correction device is provided on the moving paths of the PET film and non-woven fabric output by both the PET film roll and the non-woven fabric roll.

[0015] Preferably, a deviation correction device is provided on the back roller.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The utility model can ensure that the solid electrolyte slurry can completely penetrate the non-woven fabric without leaking out by laminating the non-woven fabric on the PET film, and the solid electrolyte slurry can be evenly coated on the non-woven fabric, thereby producing a qualified electrolyte membrane; the structure is simple, the operation is convenient, the production cost is greatly reduced, and it is suitable for large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:

[0019] Figure 1 This is a structural diagram of a solid electrolyte coating system based on PET membrane and non-woven fabric, which is mainly embodied in this utility model.

[0020] Reference numerals:

[0021] DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art further understand the present invention, but are not intended to limit the present invention in any way. It should be noted that a person skilled in the art may make various variations and improvements without departing from the scope of the present invention. Such variations and improvements are all within the scope of protection of the present invention.

[0023] like Figure 1As shown, according to the utility model, a solid electrolyte coating system based on PET film and non-woven fabric is provided, comprising: a PET film roll 1, a non-woven fabric roll 2, an electrostatic generator 3, a back roller 4, an electrolyte coating machine 5, a film tearing roller 6, and a winder 7; the output ends of the PET film roll 1 and the non-woven fabric roll 2 are both connected to the input end of the back roller 4, the electrostatic generator 3 is arranged upstream of the back roller 4, and the PET film and non-woven fabric output by the PET film roll 1 and the non-woven fabric roll 2 are electrostatically adsorbed and bonded by the electrostatic generator 3 to form a to-be-coated part, which is wound on the back roller 4; the output end of the back roller 4 is connected to the input end of the electrolyte coating machine 5, the electrolyte coating machine 5 includes a coating device and a drying device, and the output end of the electrolyte coating machine 5 is respectively connected to the film tearing roller 6 and the winder 7.

[0024] The coating device comprises a coating scraper, and the output end of the coating device is arranged in contact with the non-woven fabric.

[0025] The solid electrolyte slurry is coated on the non-woven fabric of the coating part through a coating device. The solid electrolyte slurry completely penetrates the non-woven fabric and extends to the PET film.

[0026] The coating thickness of the electrolyte coating machine 5 is between 30-50 μm.

[0027] The output end of the electrolyte coating machine 5 outputs the cured PET film and the electrolyte membrane, the film tearing roller 6 is set on the side close to the PET film, and the electrolyte membrane is wound by the winder 7.

[0028] The moving paths of the PET film and non-woven fabric output by both the PET film roll 1 and the non-woven fabric roll 2 are both provided with a correcting device.

[0029] The back roller 4 is provided with a deviation correction device.

[0030] The operation process of the present application is as follows: the PET film roll 1 outputs the PET film, and the non-woven fabric roll 2 outputs the non-woven fabric. The two are aligned on both sides through a correction device, and then the PET film and the non-woven fabric are bonded together by electrostatic adsorption through the electrostatic generator 3 to form a piece to be coated. In other specific embodiments, other bonding methods can also be used. In order to ensure that the piece to be coated is bonded tightly enough, it is further strengthened by the back roller 4. At the same time, the back roller 4 can also guide the piece to be coated to be transferred to the electrolyte coating machine 5. In the electrolyte coating machine 5, the solid electrolyte slurry is coated on the non-woven fabric of the piece to be coated by a coating scraper. Since the PET film is provided on the back side of the non-woven fabric, it can be ensured that the solid electrolyte slurry can completely penetrate the non-woven fabric and will not leak out. Since the non-woven fabric and the PET film are tightly bonded, it can be ensured that the solid electrolyte slurry can be evenly coated on the non-woven fabric. The non-woven fabric coated with the solid electrolyte slurry is dried by a drying device to form an electrolyte membrane. At this time, the electrolyte membrane and the PET membrane are still in a bonded state. Therefore, a tearing roller 6 needs to be set at the output end of the electrolyte coating machine 5 to tear the PET membrane. Then the electrolyte membrane with the PET membrane torn off is wound by a winder 7 to enter the next process.

[0031] By laminating the non-woven fabric to the PET film, this application ensures that the solid electrolyte slurry can completely penetrate the non-woven fabric without leakage, and the solid electrolyte slurry can be evenly coated on the non-woven fabric, thereby producing a qualified electrolyte membrane. The system structure of this application is simple and easy to operate, which greatly reduces production costs and is suitable for large-scale production.

[0032] In the description of this application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0033] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. A solid electrolyte coating system based on PET film and non-woven fabric, characterized in that: include: PET film roll (1), non-woven fabric roll (2), electrostatic generator (3), backing roller (4), electrolyte coating machine (5), film tearing roller (6), winder (7); The output ends of the PET film roll (1) and the non-woven fabric roll (2) are both connected to the input end of the back roller (4), and the electrostatic generator (3) is arranged upstream of the back roller (4). The PET film and non-woven fabric outputted by the PET film roll (1) and the non-woven fabric roll (2) are electrostatically adsorbed and bonded by the electrostatic generator (3) to form a piece to be coated, and the piece to be coated is wound on the back roller (4); The output end of the backing roller (4) is connected to the input end of the electrolyte coating machine (5). The electrolyte coating machine (5) includes a coating device and a drying device. The output end of the electrolyte coating machine (5) is respectively connected to the film tearing roller (6) and the winding machine (7).

2. The solid electrolyte coating system based on PET film and non-woven fabric according to claim 1, characterized in that: The coating device comprises a coating scraper, and the output end of the coating device is arranged in contact with the non-woven fabric.

3. The solid electrolyte coating system based on PET film and non-woven fabric according to claim 2, characterized in that: The solid electrolyte slurry is coated on the non-woven fabric of the to-be-coated part by a coating device, and the solid electrolyte slurry completely penetrates the non-woven fabric and extends onto the PET film.

4. The solid electrolyte coating system based on PET film and non-woven fabric according to claim 3, characterized in that: The coating thickness of the electrolyte coating machine (5) is between 30-50 μm.

5. The solid electrolyte coating system based on PET film and non-woven fabric according to claim 1, characterized in that: The output end of the electrolyte coating machine (5) outputs the cured PET film and the electrolyte membrane, the film tearing roller (6) is arranged on a side close to the PET film, and the electrolyte membrane is wound by a winding machine (7).

6. The solid electrolyte coating system based on PET film and non-woven fabric according to claim 1, characterized in that: Deviation correction devices are provided on the moving paths of the PET film and non-woven fabric output by the PET film roll (1) and the non-woven fabric roll (2).

7. The solid electrolyte coating system based on PET film and non-woven fabric according to claim 1, characterized in that: The back roller (4) is provided with a deviation correction device.

Images