Flame-retardant high-temperature-resistant capacitor film

Abstract

The utility model discloses a flame-retardant high-temperature-resistant capacitor film, which relates to the technical field of capacitor films and comprises a shell, a cover body is arranged at the top end of the shell, a lead is arranged at the top end of the cover body, and a film body is arranged in the shell. A base layer is arranged in the film body, a flame-retardant layer is arranged at the top end of the base layer, a high-temperature-resistant layer is arranged at the top end of the flame-retardant layer, a nano insulating layer is arranged at the top end of the high-temperature-resistant layer, and a metallization layer is arranged at the top end of the nano insulating layer. According to the utility model, the mechanical strength and the wear resistance of the film can be enhanced through the metallization layer, and the conductive performance and the capacitance value of the capacitor film can be improved at the same time; by arranging the protective layer, the film can be prevented from being mechanically damaged and chemically corroded in the processing and using processes, meanwhile, the weather resistance of the film is improved, and the service life of the film is prolonged; by arranging the heat dissipation layer, the heat dissipation performance of the capacitor film can be improved, and the temperature rise of the capacitor film in a high-temperature environment is reduced, so that the service life and the stability of the capacitor film are prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitor films, in particular to a flame-retardant and high-temperature resistant capacitor film. Background Art

[0002] Flame-retardant and high-temperature resistant capacitor films are widely used in the manufacture of capacitors that require high reliability and safety, such as smart grids, green new energy technologies, electric vehicles, and advanced weaponry. In these fields, capacitors need to withstand extreme conditions such as high temperature, high voltage, and high power, so the film material is required to have excellent flame retardant and high-temperature resistance. Although the current flame-retardant and high-temperature resistant capacitor films have high-temperature resistance and flame retardant properties, their tensile and wear resistance are poor, resulting in a decrease in their performance. Utility Model Content

[0003] The utility model provides a flame-retardant and high-temperature resistant capacitor film, which solves the problems in the background technology.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A flame-retardant and high-temperature resistant capacitor film comprises a shell, a cover is provided at the top of the shell, a lead is provided at the top of the cover, and a film body is provided inside the shell;

[0006] The interior of the film body includes a base layer, and a flame retardant layer is provided on the top of the base layer, and a high temperature resistant layer is provided on the top of the flame retardant layer, a nano insulating layer is provided on the top of the high temperature resistant layer, and a metallized layer is provided on the top of the nano insulating layer, and a protective layer and a heat dissipation layer are provided on the top of the metallized layer.

[0007] As a further description of the above technical solution:

[0008] The material of the flame retardant layer is aluminum hydroxide.

[0009] As a further description of the above technical solution:

[0010] The material of the high temperature resistant layer is silicon nitride.

[0011] As a further description of the above technical solution:

[0012] The material of the metallized layer is aluminum or zinc, and the shape of the metallized layer is wavy or grid-like.

[0013] As a further description of the above technical solution:

[0014] The material of the protective layer is silicone or polyurethane.

[0015] As a further description of the above technical solution:

[0016] The heat dissipation layer is made of graphite or carbon fiber.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] In the utility model, the provision of a metallized layer can enhance the mechanical strength and wear resistance of the film, while also improving the electrical conductivity and capacitance value of the capacitor film; the provision of a protective layer can prevent the film from mechanical damage and chemical corrosion during processing and use, while improving the weather resistance and service life of the film; the provision of a heat dissipation layer can improve the heat dissipation performance of the capacitor film, reduce its temperature rise in a high-temperature environment, and thus extend its service life and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of a flame-retardant and high-temperature resistant capacitor film;

[0020] Figure 2 This is a schematic diagram of the shell surface structure in the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the shell in the present invention.

[0022] Legend:

[0023] Shell; 2. Cover; 3. Lead; 4. Film body; 5. Base layer; 6. Flame retardant layer; 7. High temperature resistant layer; 8. Nano insulation layer; 9. Metallized layer; 10. Protective layer; 11. Heat dissipation layer. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figure 1-3, a flame-retardant and high-temperature resistant capacitor film, including a shell 1, a cover 2 is provided on the top of the shell 1, and a lead 3 is provided on the top of the cover 2, and a film body 4 is provided inside the shell 1; the film body 4 includes a base layer 5 inside, and a flame-retardant layer 6 is provided on the top of the base layer 5, and a high-temperature resistant layer 7 is provided on the top of the flame-retardant layer 6, a nano-insulating layer 8 is provided on the top of the high-temperature resistant layer 7, and a metallized layer 9 is provided on the top of the nano-insulating layer 8, and a protective layer 10 and a heat dissipation layer 11 are provided on the top of the metallized layer 9. The base layer 5 can be selected from a polymer material with excellent flame retardant and high-temperature resistant properties as a base layer, such as polyimide, polytetrafluoroethylene or modified polyester, which can provide basic mechanical strength and electrical properties and serve as a carrier for other functional layers; the nano-insulating layer 8 can be rapidly deposited on the surface of the film using plasma-enhanced chemical vapor deposition technology or other advanced technologies. A nano-insulating layer 8 with a wide energy band gap can be deposited on the surface of the film, which can increase the charge injection barrier at the interface between the electrode and the dielectric, suppress leakage current at high temperature, and thus improve the energy storage characteristics of the capacitor film under high temperature and high electric field.

[0026] Furthermore, the material of the flame retardant layer 6 is aluminum hydroxide, and a flame retardant or flame retardant polymer is added to form the flame retardant layer 6, such as inorganic flame retardants such as antimony trioxide and aluminum hydroxide, or organic flame retardants such as halogens and phosphorus. When the capacitor film is heated, the flame retardant layer 6 can release flammable gas to form a protective layer to prevent the spread of flames and reduce the heat and smoke generated by combustion.

[0027] Furthermore, the material of the high temperature resistant layer 7 is silicon nitride. The high temperature resistant layer 7 is formed by a high temperature resistant polymer or an inorganic material, such as inorganic materials such as aluminum oxide and silicon nitride, or polymers such as modified polyimide and polyetheretherketone, which can improve the high temperature resistance of the capacitor film, enabling it to operate stably for a long time in a high temperature environment, while reducing performance degradation and shortened life due to high temperature.

[0028] Furthermore, the material of the metallization layer 9 is aluminum or zinc, and the shape of the metallization layer 9 is wavy or grid-like. A layer of metal film, such as aluminum, zinc, etc., is deposited on the surface of the film to form a metallization layer 9, which can improve the conductivity and capacitance value of the capacitor film, while enhancing the mechanical strength and wear resistance of the film. At the same time, the wavy or grid-like metallization layer 9 can improve its tensile properties.

[0029] Furthermore, the material of the protective layer 10 is silicone or polyurethane. A protective coating such as silicone, polyurethane, etc. is applied on the surface of the film to prevent the film from mechanical damage and chemical corrosion during processing and use, while improving the weather resistance and service life of the film.

[0030] Furthermore, the heat dissipation layer 11 is made of graphite or carbon fiber. Adding thermal conductive materials such as graphite, carbon fiber, etc. inside or on the surface of the film can improve the heat dissipation performance of the capacitor film, reduce its temperature rise in a high temperature environment, and thus extend its service life and stability.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A flame retardant and high temperature resistant capacitor film, comprising a housing (1), characterized in that: The top end of the shell (1) is provided with a cover (2), the top end of the cover (2) is provided with a lead (3), and a film body (4) is provided inside the shell (1); The film body (4) includes a base layer (5) inside, and a flame retardant layer (6) is provided on the top of the base layer (5), and a high temperature resistant layer (7) is provided on the top of the flame retardant layer (6), and a nano insulating layer (8) is provided on the top of the high temperature resistant layer (7), and a metallized layer (9) is provided on the top of the nano insulating layer (8), and a protective layer (10) and a heat dissipation layer (11) are provided on the top of the metallized layer (9).

2. The flame-retardant and high-temperature-resistant capacitor film according to claim 1, characterized in that: The material of the flame retardant layer (6) is aluminum hydroxide.

3. The flame-retardant and high-temperature-resistant capacitor film according to claim 1, characterized in that: The material of the high temperature resistant layer (7) is silicon nitride.

4. The flame-retardant and high-temperature-resistant capacitor film according to claim 1, characterized in that: The material of the metallized layer (9) is aluminum or zinc, and the shape of the metallized layer (9) is wavy or grid-like.

5. The flame-retardant and high-temperature-resistant capacitor film according to claim 1, characterized in that: The material of the protective layer (10) is silicone or polyurethane.

6. The flame-retardant and high-temperature-resistant capacitor film according to claim 1, characterized in that: The heat dissipation layer (11) is made of one of graphite and carbon fiber.

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