Metallized film capacitor and household appliance
By using a 5.8μm thick metallized polypropylene film and a mixed dielectric of polyolefin oil and quartz sand, the problems of excessively large size and high cost of CBB65 metallized film capacitors have been solved, achieving miniaturization and cost reduction of capacitors, and enhancing the competitiveness of home appliances.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHUHAI GREE XINYUAN ELECTRONICS
- Filing Date
- 2025-12-25
- Publication Date
- 2026-05-01
AI Technical Summary
The existing CBB65 metallized film capacitors are too large and have high costs, which makes them uncompetitive in the market for household appliances.
A 5.8μm thick metallized polypropylene film was used as the medium material, and a mixture of polyolefin oil and quartz sand was used as the filling medium in the impregnation process to improve heat dissipation and reduce material costs.
This has enabled the miniaturization and weight reduction of metallized film capacitors, reducing material costs while maintaining good heat dissipation and performance, thus enhancing the price competitiveness of home appliances.
Smart Images
Figure CN121964387A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of capacitor technology, and more specifically, to a metallized film capacitor and a household appliance. Background Technology
[0002] CBB65 metallized film capacitors are capacitors specifically designed for AC circuits. They use metallized polypropylene film as the dielectric and electrodes, and have characteristics such as self-healing, high voltage resistance, and low loss. They are widely used in household appliances, industrial equipment, and power systems.
[0003] Currently, the core of most CBB65 metallized film capacitors is made of a 6.5μm thick metallized polypropylene film dielectric material wound together. The specifications of CBB65 metallized film capacitors are as follows: Figure 1 As shown; however, the specifications of this type of CBB65 metallized film capacitor are relatively large and the cost is relatively high, which will lead to a higher cost and price of household appliances, making it difficult to reflect the price advantage of household appliances compared with other similar household appliances on the market. Summary of the Invention
[0004] The purpose of this application is to provide a metallized film capacitor and a household appliance. The capacitor core of the metallized film capacitor is made of a 5.8μm thick metallized polypropylene film dielectric material, which can significantly save material costs. At the same time, it can make the metallized film capacitor smaller and lighter. Furthermore, the capacitor core uses a mixed filling dielectric made of polyolefin oil and quartz sand in the impregnation process, which can better ensure the heat dissipation of the metallized film capacitor and ensure the performance of the metallized film capacitor.
[0005] To achieve the above objectives, in a first aspect, this application provides a metallized thin-film capacitor, comprising: The capacitor core is formed by winding a metallized polypropylene film dielectric material, wherein the thickness of the metallized polypropylene film is 5.8 μm. The capacitor core is impregnated using a mixed filling medium made of polyolefin oil and quartz sand, which permeates between the thin film layers of the capacitor core.
[0006] In the implementation of the above technical solution, the capacitor core of the metallized film capacitor is made of a 5.8μm thick metallized polypropylene film dielectric material wound together. This replaces the existing 6.5μm thick metallized polypropylene film used in metallized film capacitors with a 5.8μm thick film shrinkage design, which significantly reduces the material cost of the metallized film capacitor. Simultaneously, it allows for a smaller size, making the capacitor more compact and lightweight. Furthermore, the capacitor core uses a mixed filling medium made of polyolefin oil and quartz sand in the impregnation process. This mixed filling medium improves the heat dissipation effect of the metallized film capacitor, ensuring good heat dissipation even with a smaller size. This, in turn, guarantees the performance of the metallized film capacitor, making it more practical and valuable.
[0007] In a preferred embodiment of this application, the polyolefin oil and the quartz sand are mixed in a ratio of (6-8):(2-4).
[0008] In the implementation of the above technical solution, the limited mixing ratio of polyolefin oil and quartz sand can effectively ensure that the amount of polyolefin oil used will not be reduced too much, and can also ensure that the amount of quartz sand added is sufficient, so that the added quartz sand can effectively improve the heat dissipation effect of the metallized film capacitor and ensure the good heat dissipation performance of the metallized film capacitor.
[0009] In a preferred embodiment of this application, the polyolefin oil and the quartz sand are mixed in a ratio of 7:3.
[0010] In the implementation of the above technical solution, the mixing ratio of polyolefin oil and quartz sand is a very good one, which can not only greatly improve the heat dissipation effect of the metallized film capacitor, but also effectively reduce the impact on the performance of the metallized film capacitor.
[0011] In a preferred embodiment of this application, during the impregnation process, the quartz sand is uniformly dispersed in the polyolefin oil.
[0012] In the process of implementing the above technical solution, the quartz sand is uniformly dispersed in the polyolefin oil, which can homogenize the mixed filling medium and allow the mixed filling medium to penetrate evenly between the thin film layers of the capacitor core. This ensures that the heat dissipation of the metallized film capacitor is more uniform and dispersed, resulting in better heat dissipation performance of the metallized film capacitor.
[0013] In a preferred embodiment of this application, the metallized film capacitor is a CBB65 metallized film capacitor.
[0014] In the implementation of the above technical solution, the metallized film capacitor adopts CBB65 metallized film capacitor. CBB65 metallized film capacitor is more suitable for household appliances, industrial equipment and power systems, especially household appliances.
[0015] In a preferred embodiment of this application, the sheet resistance of the metallized thin-film capacitor is 15–18 Ω / □.
[0016] In the implementation of the above technical solution, the sheet resistance of the metallized film capacitor is designed to be 15–18Ω / □, which can improve the withstand voltage per unit area of the metallized film capacitor and ensure that the temperature rise of the metallized film capacitor is not too high, thereby enabling the metallized film capacitor to have better performance and reliability.
[0017] In a preferred embodiment of this application, the metallized film capacitor includes a capacitor core, a capacitor casing, and capacitor end caps. The capacitor core is disposed in the capacitor shell, the capacitor core contains a core rod, and the capacitor core is also covered with an insulating sleeve; The capacitor end cap is disposed on the end of the capacitor housing, and the capacitor end cap is provided with terminals, and the terminals are provided with capacitor inserts; the capacitor core is connected to the terminals through connecting wires.
[0018] In the implementation of the above technical solution, the metallized film capacitor with this structure has higher stability and reliability, which can ensure that the metallized film capacitor has better performance and service life.
[0019] In a preferred embodiment of this application, an insulating sleeve is provided on the top and bottom of the outer periphery of the capacitor core. The insulating sleeve located at the top of the outer periphery of the capacitor core is fitted over the top and side of the outer periphery of the capacitor core, and the insulating sleeve located at the bottom of the outer periphery of the capacitor core is fitted over the bottom and side of the outer periphery of the capacitor core.
[0020] In the implementation of the above technical solution, the placement and wrapping position of the insulating sleeve enable the insulating sleeve to better play its role in the metallized film capacitor, thereby improving the reliability and product quality of the metallized film capacitor.
[0021] In a preferred embodiment of this application, the metallized film capacitor further includes explosion-proof blocks, which are provided on both sides of the capacitor end cap, and both explosion-proof blocks are located in the capacitor housing.
[0022] In the process of implementing the above technical solution, explosion-proof blocks are set on both sides of the capacitor end cap. The explosion-proof blocks can provide strong protection for the use of the metallized film capacitor, and improve the reliability, safety and product quality of the metallized film capacitor.
[0023] Secondly, this application provides a household appliance having the aforementioned metallized film capacitor.
[0024] This application discloses a metallized film capacitor and a household appliance, which, compared with the prior art, have at least the following advantages: The metallized film capacitor of this application includes a capacitor core, which is wound with a metallized polypropylene film dielectric material. The thickness of the metallized polypropylene film is 5.8μm. This replaces the existing 6.5μm thick metallized polypropylene film used in metallized film capacitors with a 5.8μm thick film shrinkage design, which can significantly save material costs for the metallized film capacitor. At the same time, it can make the size of the metallized film capacitor smaller, more compact, and lighter. Furthermore, the capacitor core uses a mixed filling medium made of polyolefin oil and quartz sand in the impregnation process. The mixed filling medium penetrates between the film layers of the capacitor core. This mixed filling medium can improve the heat dissipation effect of the metallized film capacitor, which can better ensure that the metallized film capacitor still has good heat dissipation even with a reduced size. This can ensure the performance of the metallized film capacitor and make it more practical and valuable.
[0025] The household appliance of this application has the aforementioned metallized film capacitor, which significantly reduces material costs. At the same time, the metallized film capacitor is smaller in size, becoming more compact and lightweight, thereby reducing the cost and price of the household appliance and making it more price-competitive compared to other similar household appliances on the market. Attached Figure Description
[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0027] Figure 1 This is a schematic diagram of the structure of a metallized thin-film capacitor in the prior art; Figure 2 This is a schematic diagram of the structure of the metallized thin-film capacitor provided in the embodiments of this application; Figure 3 This is a schematic diagram of the internal structure of the metallized thin-film capacitor provided in the embodiments of this application.
[0028] Reference numerals: 11. Capacitor core; 12. Capacitor casing; 13. Capacitor end cap; 14. Core rod; 15. Insulating sleeve; 16. Terminal; 161. Terminal cup; 162. Terminal pin; 17. Capacitor insert; 18. Connecting wire; 19. Explosion-proof block. Detailed Implementation
[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0030] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0031] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0032] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or a point connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0033] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.
[0034] Currently, the core of most CBB65 metallized film capacitors is made of a 6.5μm thick metallized polypropylene film dielectric material wound together. The specifications of CBB65 metallized film capacitors are as follows: Figure 1 As shown; however, the specifications of this type of CBB65 metallized film capacitor are relatively large and the cost is relatively high, which will lead to a higher cost and price of household appliances, making it difficult to reflect the price advantage of household appliances compared with other similar household appliances on the market.
[0035] To address the problems in the prior art, this application provides a metallized film capacitor and a household appliance. The capacitor core of the metallized film capacitor is made of a 5.8μm thick metallized polypropylene film dielectric material, which can significantly save material costs. At the same time, it can make the metallized film capacitor smaller and lighter. Furthermore, the capacitor core uses a mixed filling dielectric made of polyolefin oil and quartz sand in the impregnation process, which can better ensure the heat dissipation of the metallized film capacitor and ensure its performance.
[0036] Example 1 See Figure 2 and Figure 3 The metallized film capacitor of this application embodiment includes a capacitor core 11, which is formed by winding a metallized polypropylene film dielectric material, and the thickness of the metallized polypropylene film is 5.8 μm. In the impregnation process, the capacitor core 11 uses a mixed filling medium made of polyolefin oil and quartz sand, which permeates between the thin film layers of the capacitor core 11.
[0037] In this embodiment, compared to the 6.5μm thick metallized polypropylene film in the prior art, the metallized film capacitor of this embodiment uses a 5.8μm thick film shrinkage design, which can significantly save material costs and make the size of the metallized film capacitor smaller. For details, please refer to [link to relevant documentation]. Figure 1 and Figure 2 , Figure 1 It is a metallized film capacitor in existing technology, which uses a 6.5μm thick metallized polypropylene film with dimensions of 50mm*90mm. Figure 2 This is a metallized film capacitor in this embodiment, with a specification of 50mm*80mm.
[0038] In this embodiment, the impregnation process removes moisture and gas from the capacitor core 11. A mixed filling medium, composed of polyolefin oil and quartz sand, is used for impregnation to fill all the voids between the solids inside the capacitor core 11, thereby improving the electrical performance of the product. In this embodiment, preferably, drying and impregnation material pretreatment can be performed during the impregnation process. Drying: Before impregnation, the capacitor core 11 is thoroughly dried to remove moisture. The drying process can be divided into two stages: first, preliminary drying is carried out under atmospheric pressure using an oven or far-infrared radiator, and then deep drying is carried out under vacuum conditions. The selection of drying temperature and vacuum degree should be determined according to the size and material of the core. Impregnation material pretreatment: The impregnation material (mixed filling medium) needs to be pretreated before use to remove dissolved air and moisture. The pretreatment process may include steps such as vacuum heating and stirring to ensure the purity and uniformity of the impregnation material.
[0039] In this embodiment, the capacitor core 11 uses a mixed filling medium made of polyolefin oil and quartz sand in the impregnation process, which can effectively improve the overall thermal conductivity of the capacitor core 11, which is beneficial to the heat dissipation of the capacitor core 11 and the metallized film capacitor, and improves the heat dissipation effect of the metallized film capacitor. In addition, the use of a mixed filling medium made of polyolefin oil and quartz sand can effectively reduce the amount of polyolefin oil used, reducing the amount of polyolefin oil used by about 30%. At the same time, quartz sand is less expensive than polyolefin oil, which can further save material costs.
[0040] The metallized film capacitor of this application embodiment uses a 5.8μm thick metallized polypropylene film dielectric material wound into the capacitor core 11. This replaces the 6.5μm thick metallized polypropylene film used in existing metallized film capacitors with a 5.8μm thick film shrinkage design, which can significantly save material costs for the metallized film capacitor. At the same time, it can make the metallized film capacitor smaller, more compact, and lighter. Furthermore, the capacitor core 11 uses a mixed filling medium made of polyolefin oil and quartz sand in the impregnation process. This mixed filling medium can improve the heat dissipation effect of the metallized film capacitor, which can better ensure that the metallized film capacitor still has good heat dissipation even with a reduced size. This can ensure the performance of the metallized film capacitor and make it more practical and valuable.
[0041] Preferably, in this embodiment, the mixing ratio of polyolefin oil and quartz sand is (6-8):(2-4).
[0042] In the above structure, the limited mixing ratio of polyolefin oil and quartz sand can effectively ensure that the amount of polyolefin oil used is not reduced too much, and also ensure that the amount of quartz sand added is sufficient, so that the added quartz sand can effectively improve the heat dissipation effect of the metallized film capacitor and ensure the good heat dissipation performance of the metallized film capacitor.
[0043] For example, the polyolefin oil and quartz sand are mixed in a ratio of 7:3.
[0044] In the above structure, the mixing ratio of polyolefin oil and quartz sand is a highly optimal one, which not only greatly improves the heat dissipation effect of the metallized film capacitor, but also effectively reduces the impact on the performance of the metallized film capacitor.
[0045] Preferably, in this embodiment, during the impregnation process, the quartz sand is uniformly dispersed in the polyolefin oil.
[0046] In the above structure, the quartz sand is uniformly dispersed in the polyolefin oil, which can homogenize the mixed filling medium and allow the mixed filling medium to penetrate evenly between the thin film layers of the capacitor core 11. This ensures that the heat dissipation of the metallized film capacitor is more uniform and dispersed, resulting in better heat dissipation performance of the metallized film capacitor.
[0047] Preferably, in this embodiment, the metallized film capacitor is a CBB65 metallized film capacitor.
[0048] In the above structure, the metallized film capacitor adopts the CBB65 metallized film capacitor, which is more suitable for household appliances, industrial equipment and power systems, especially household appliances.
[0049] It should be noted that in other embodiments, the metallized film capacitor may also be other types of metallized film capacitors, which will not be listed here.
[0050] Example 2 See Figures 2 to 3 Based on the above embodiment 1, the metallized film capacitor of this embodiment includes a capacitor core 11, which is made of a metallized polypropylene film dielectric material wound together, and the thickness of the metallized polypropylene film is 5.8μm. In the impregnation process, the capacitor core 11 uses a mixed filling medium made of polyolefin oil and quartz sand, which penetrates into the thin film layers of the capacitor core 11. The sheet resistance of metallized film capacitors is 15–18 Ω / □.
[0051] In the above structure, the sheet resistance of the metallized film capacitor is designed to be 15–18 Ω / □, which can improve the voltage withstand capability per unit area of the metallized film capacitor and prevent the temperature rise of the metallized film capacitor from being too high, thereby enabling the metallized film capacitor to have better performance and reliability.
[0052] Specifically, please refer to Tables 1 and 2 below. Table 1 is a comparison table of the withstand voltage data of metallized film capacitors with different sheet resistances under different DC voltages, and Table 2 is a comparison table of the withstand voltage data of metallized film capacitors with different sheet resistances under different AC voltages. Table 1
[0053] Table 2
[0054] By comparing the withstand voltage data in Table 1 and Table 2, it can be seen that the metallized film capacitor with a sheet resistance of 15–18 Ω / □ has a stronger withstand voltage capability. Furthermore, the metallized film capacitor with a sheet resistance of 15–18 Ω / □ will not fail under a DC withstand voltage of 2500VDC and will not break down for 120 seconds under AC 1300VAC, demonstrating excellent insulation reliability.
[0055] In addition, please refer to Table 3 below, which is a comparison table of the durability capacitance change rate of metallized film capacitors using a 5.8μm thick metallized polypropylene film under different sheet resistances: Table 3
[0056] As shown in Table 3, the capacitance change rate of metallized film capacitors with different sheet resistances was controlled within the standard range during the accelerated aging tests of 48 hours and 100 hours. Among them, the average capacitance decay of the metallized film capacitors in the 15–18Ω / □ high sheet resistance group was -0.06% and -0.01%, which was better than that of the metallized film capacitors in the medium and low sheet resistance groups, and no early failure phenomenon was observed. This indicates that the 15–18Ω / □ high sheet resistance metallized film capacitors have better electrical performance and stability.
[0057] Example 3 See Figures 2 to 3 Based on the above embodiment one or embodiment two, the metallized film capacitor of this embodiment includes a capacitor core 11, which is made of a metallized polypropylene film dielectric material wound together, and the thickness of the metallized polypropylene film is 5.8μm. In the impregnation process, the capacitor core 11 uses a mixed filling medium made of polyolefin oil and quartz sand, which permeates between the thin film layers of the capacitor core 11.
[0058] The metallized film capacitor includes a capacitor core 11, a capacitor casing 12, and capacitor end caps 13. The capacitor core 11 is disposed in the capacitor housing 12, and a core rod 14 is disposed in the capacitor core 11. The capacitor core 11 is also covered with an insulating sleeve 15. A capacitor end cap 13 is provided on the end of the capacitor housing 12. A terminal 16 is provided on the capacitor end cap 13, and a capacitor insert 17 is provided on the terminal 16. The capacitor core 11 is connected to the terminal 16 through a connecting wire 18.
[0059] Specifically, in this embodiment, the terminal 16 includes a terminal bowl 161 and a terminal pin 162. The terminal bowl 161 is disposed on the capacitor end cap 13, and the terminal pin 162 is disposed on the terminal bowl 161. The capacitor core 11 is connected to the terminal pin 162 through a connecting wire 18. A capacitor insert 17 is disposed on the terminal bowl 161. In this embodiment, two terminals 16 are disposed on the capacitor end cap 13, and the two terminals 16 adopt the same structure. One terminal 16 is correspondingly disposed with one capacitor insert 17, that is, the metallized film capacitor has two capacitor inserts 17.
[0060] In the above structure, the metallized film capacitor with this structure has higher stability and reliability, which can ensure that the metallized film capacitor has better performance and service life.
[0061] Example 4 See Figures 2 to 3 Based on the above embodiment 3, in this embodiment, the metallized film capacitor has an insulating sleeve 15 on the top and bottom of the outer periphery of the capacitor core 11. The insulating sleeve 15 located at the top of the outer periphery of the capacitor core 11 is fitted onto the top and side of the outer periphery of the capacitor core 11, and the insulating sleeve 15 located at the bottom of the outer periphery of the capacitor core 11 is fitted onto the bottom and side of the outer periphery of the capacitor core 11.
[0062] In the above structure, the placement and wrapping position of the insulating sleeve 15 enable the insulating sleeve 15 to better perform its function in the metallized film capacitor, thereby improving the reliability and product quality of the metallized film capacitor.
[0063] Preferably, in this embodiment, the metallized film capacitor further includes explosion-proof blocks 19. Explosion-proof blocks 19 are provided on both sides of the capacitor end cap 13, and both explosion-proof blocks 19 are located in the capacitor housing 12.
[0064] In the above structure, explosion-proof blocks 19 are provided on both sides of the capacitor end cap 13. The explosion-proof blocks 19 can provide strong protection for the use of the metallized film capacitor, and improve the reliability, safety and product quality of the metallized film capacitor.
[0065] Example 5 See Figures 2 to 3 This application provides a household appliance having a metallized thin-film capacitor from any of the embodiments one to four described above.
[0066] The household appliance of this application embodiment has a metallized film capacitor of any one of the embodiments one to four above. The metallized film capacitor greatly saves material costs. At the same time, the metallized film capacitor is smaller in size, becoming more miniaturized and lightweight, thereby reducing the cost and price of the household appliance, making the household appliance more price-competitive compared to other similar household appliances on the market.
[0067] In all the above embodiments, "large" and "small" are relative terms, "more" and "less" are relative terms, and "upper" and "lower" are relative terms. The embodiments of this application will not elaborate further on the expression of such relative terms.
[0068] It should be understood that phrases such as "in one embodiment," "in this embodiment," "in this application embodiment," or "as an optional implementation" throughout the specification mean that a specific feature, structure, or characteristic related to an embodiment is included in at least one embodiment of this application. Therefore, phrases such as "in one embodiment," "in this embodiment," "in this application embodiment," or "as an optional implementation" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Those skilled in the art should also understand that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to this application.
[0069] In the various embodiments of this application, it should be understood that the sequence number of each process does not necessarily imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.
[0070] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.
Claims
1. A metallized thin-film capacitor, characterized in that, include: The capacitor core is formed by winding a metallized polypropylene film dielectric material, wherein the thickness of the metallized polypropylene film is 5.8 μm. The capacitor core is impregnated using a mixed filling medium made of polyolefin oil and quartz sand, which permeates between the thin film layers of the capacitor core.
2. The metallized thin-film capacitor according to claim 1, characterized in that, The mixing ratio of the polyolefin oil to the quartz sand is (6-8):(2-4).
3. The metallized thin-film capacitor according to claim 2, characterized in that, The polyolefin oil and the quartz sand are mixed in a ratio of 7:
3.
4. The metallized thin-film capacitor according to any one of claims 1-3, characterized in that, In the impregnation process, the quartz sand is uniformly dispersed in the polyolefin oil.
5. The metallized thin-film capacitor according to claim 1, characterized in that, The metallized film capacitor is a CBB65 metallized film capacitor.
6. The metallized thin-film capacitor according to claim 1, characterized in that, The sheet resistance of the metallized thin-film capacitor is 15–18 Ω / □.
7. The metallized thin-film capacitor according to claim 1, characterized in that, The metallized film capacitor includes the capacitor core, the capacitor casing, and the capacitor end caps. The capacitor core is disposed in the capacitor shell, the capacitor core contains a core rod, and the capacitor core is also covered with an insulating sleeve; The capacitor end cap is disposed on the end of the capacitor housing, and the capacitor end cap is provided with terminals, and the terminals are provided with capacitor inserts; the capacitor core is connected to the terminals through connecting wires.
8. The metallized thin-film capacitor according to claim 7, characterized in that, Insulating sleeves are fitted on the top and bottom of the outer periphery of the capacitor core. The insulating sleeve located at the top of the outer periphery of the capacitor core is fitted on the top and side of the outer periphery of the capacitor core, and the insulating sleeve located at the bottom of the outer periphery of the capacitor core is fitted on the bottom and side of the outer periphery of the capacitor core.
9. The metallized thin-film capacitor according to claim 7, characterized in that, The metallized film capacitor also includes explosion-proof blocks, which are provided on both sides of the capacitor end cap, and both explosion-proof blocks are located in the capacitor housing.
10. A household appliance, characterized in that, It has a metallized thin-film capacitor as described in any one of claims 1-9.