Corrosion-resistant thin film capacitor

Abstract

The utility model relates to the technical field of capacitors, and discloses a corrosion-resistant film capacitor which comprises a capacitor shell, an electrolyte film is arranged in the capacitor shell, two sides of the electrolyte film are fixedly connected with external electrodes, the left side of each external electrode is provided with an anode wire, and the right side of each external electrode is provided with a cathode wire. A cathode wire is mounted on the right side of the external electrode, a top cover is mounted at the top end of the capacitor shell, mounting clamping grooves are fixedly connected to the top ends of the two sides in the capacitor shell, mounting clamping blocks are fixedly connected to the two sides of the bottom end of the top cover, and a corrosion-resistant film is mounted outside the electrolyte film. According to the corrosion-resistant thin film capacitor, the exterior of the electrolyte thin film can be protected through the corrosion-resistant thin film, the electrolyte thin film can be wrapped with the corrosion-resistant thin film and the partition thin film, corrosion materials are prevented from making direct contact with the electrolyte thin film to cause damage, and the corrosion-resistant effect is enhanced through the structure; the problem that the protection effect is poor is solved.

Description

Technical Field

[0001] This utility model relates to the field of capacitor technology, specifically to a corrosion-resistant thin-film capacitor. Background Technology

[0002] Film capacitors are a type of capacitor. They are constructed by overlapping metal foil as electrodes with plastic films such as polyethylene, polypropylene, polystyrene, or polycarbonate at both ends and then winding them into a cylindrical shape. Film capacitors have advantages such as non-polarity, high insulation resistance, excellent frequency characteristics, and very low dielectric loss. The typical manufacturing method of film capacitors is to overlap and wind together metal foil such as aluminum as electrodes with plastic films. Film capacitors are mainly used in many industries such as electronics, home appliances, communications, power, electrified railways, hybrid vehicles, wind power generation, and solar power generation.

[0003] Film capacitors suffer from poor protection during use. The electrolyte film inside the film capacitor is only protected by the outer shell. Once corrosive materials enter the interior of the shell, the electrolyte film is easily damaged, causing the film capacitor to malfunction.

[0004] There is an urgent need for a corrosion-resistant thin-film capacitor to address the technical deficiencies mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a corrosion-resistant thin-film capacitor to solve the problem of poor protection effect mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant film capacitor, comprising a capacitor shell, an electrolyte film disposed inside the capacitor shell, external electrodes fixedly connected to both sides of the electrolyte film, a positive electrode wire installed on the left side of the external electrodes, a negative electrode wire installed on the right side of the external electrodes, a top cover installed on the top of the capacitor shell, mounting slots fixedly connected to the top of both sides inside the capacitor shell, mounting blocks fixedly connected to both sides of the bottom of the top cover, a corrosion-resistant film installed outside the electrolyte film, a partition film fixedly connected to the inner side of the corrosion-resistant film, two sets of wire holes provided at the bottom of the capacitor shell, splicing strips fixedly connected to both sides of the corrosion-resistant film, and splicing grooves fixedly connected to the outside of the external electrodes.

[0007] Preferably, the splicing strip is embedded inside the splicing groove, and the partition film is disposed outside the electrolyte film.

[0008] Preferably, the mounting block is embedded inside the mounting slot, the mounting block has a positioning hole inside, and the top of both sides of the capacitor housing is movably hinged with a positioning rod.

[0009] Preferably, the positioning rod can penetrate the capacitor housing and be embedded inside the positioning socket.

[0010] Preferably, a sealing strip is fixedly connected to the bottom end of the top cover, and the top cover is made of the same material as the capacitor shell.

[0011] Preferably, the positive and negative wires can pass through the interior of the wire hole, and a sealing ring is fixedly connected inside the wire hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are: this corrosion-resistant film capacitor not only achieves the functions of enhanced corrosion resistance and protection, easy disassembly, and sealing;

[0013] (1) By setting external electrodes, electrolyte film, corrosion-resistant film, partition film, splicing strip and splicing groove, when the electrolyte film is installed inside the capacitor shell, the corrosion-resistant film can protect the outside of the electrolyte film, and the corrosion-resistant film and partition film can wrap around the outside of the electrolyte film to prevent corrosive materials from directly contacting the electrolyte film and causing damage. This structure realizes the function of enhancing corrosion resistance and protection.

[0014] (2) By setting up a positioning rod, mounting block, top cover, positioning hole and mounting slot, when it is necessary to inspect the inside of the film capacitor, the top cover on the capacitor shell can be removed. When disassembling, the positioning rod is pried to both sides and the positioning rod can be moved out from the inside of the positioning hole. Then the top cover can be lifted up and the mounting block at the bottom of the top cover can be moved out from the inside of the mounting slot to complete the disassembly. This structure realizes the function of easy and quick disassembly and maintenance.

[0015] (3) By providing a positive wire, a negative wire, a wire hole and a sealing ring, the film capacitor needs to be connected to the positive wire and the negative wire when in use. When the positive wire and the negative wire pass through the capacitor shell, the sealing ring inside the wire hole can fit tightly with the positive wire and the negative wire. The sealing ring can improve the sealing protection of the capacitor shell. This structure realizes the function of easy sealing. Attached Figure Description

[0016] Figure 1 This is a frontal cross-sectional view of the present invention.

[0017] Figure 2 This is a bottom view of the structure of this utility model;

[0018] Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0019] Figure 4 This is a frontal cross-sectional view of the electrolyte film of this utility model.

[0020] In the diagram: 1. Positive electrode lead; 2. Capacitor casing; 3. External electrode; 4. Positioning rod; 5. Mounting clip; 6. Electrolyte membrane; 7. Corrosion-resistant membrane; 8. Isolation membrane; 9. Top cover; 10. Negative electrode lead; 11. Lead hole; 12. Sealing ring; 13. Positioning hole; 14. Mounting slot; 15. Splicing strip; 16. Splicing groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1: Please refer to Figure 1-4 A corrosion-resistant film capacitor includes a capacitor housing 2, an electrolyte film 6 disposed inside the capacitor housing 2, external electrodes 3 fixedly connected to both sides of the electrolyte film 6, a positive electrode wire 1 installed on the left side of the external electrode 3, a negative electrode wire 10 installed on the right side of the external electrode 3, a top cover 9 installed on the top of the capacitor housing 2, mounting slots 14 fixedly connected to the top of both sides inside the capacitor housing 2, mounting blocks 5 fixedly connected to both sides of the bottom of the top cover 9, a corrosion-resistant film 7 installed outside the electrolyte film 6, a partition film 8 fixedly connected to the inner side of the corrosion-resistant film 7, two sets of wire holes 11 provided at the bottom of the capacitor housing 2, splicing strips 15 fixedly connected to both sides of the corrosion-resistant film 7, and splicing grooves 16 fixedly connected to the outside of the external electrodes 3.

[0023] The splicing strip 15 is embedded inside the splicing groove 16, and the partition film 8 is placed outside the electrolyte film 6;

[0024] Specifically, such as Figure 1 and Figure 4 As shown, when the electrolyte film 6 is installed inside the capacitor housing 2, the corrosion-resistant film 7 can protect the outside of the electrolyte film 6. The corrosion-resistant film 7 and the isolation film 8 can wrap around the outside of the electrolyte film 6 to prevent corrosive materials from directly contacting the electrolyte film 6 and causing damage.

[0025] Example 2: The mounting block 5 is embedded inside the mounting slot 14. The mounting block 5 is provided with a positioning hole 13. The top of both sides of the capacitor shell 2 is movably hinged with a positioning rod 4. The positioning rod 4 can pass through the capacitor shell 2 and be embedded inside the positioning hole 13.

[0026] Specifically, such as Figure 1 and Figure 3 As shown, when inspecting the inside of the film capacitor, the top cover 9 on the capacitor housing 2 can be removed. When removing it, the positioning rod 4 is pried to both sides, and the positioning rod 4 can be moved out from the inside of the positioning hole 13. Then the top cover 9 can be lifted up, and the mounting block 5 at the bottom of the top cover 9 can be moved out from the inside of the mounting slot 14 to complete the removal.

[0027] Example 3: A sealing strip is fixedly connected to the bottom of the top cover 9. The top cover 9 is made of the same material as the capacitor shell 2. The positive electrode wire 1 and the negative electrode wire 10 can pass through the inside of the wire hole 11. A sealing ring 12 is fixedly connected inside the wire hole 11.

[0028] Specifically, such as Figure 1 and Figure 2 As shown, when the positive electrode wire 1 and the negative electrode wire 10 pass through the capacitor housing 2, the sealing ring 12 inside the wire hole 11 can fit tightly with the positive electrode wire 1 and the negative electrode wire 10, and the sealing ring 12 can improve the sealing protection of the capacitor housing 2.

[0029] Working Principle: When using this utility model, the film capacitor needs to be installed on the circuit board first. The positive electrode wire 1 and negative electrode wire 10 on the film capacitor are used for connection. When the positive electrode wire 1 and negative electrode wire 10 pass through the capacitor shell 2, the sealing ring 12 inside the wire hole 11 can fit tightly with the positive electrode wire 1 and negative electrode wire 10. The sealing ring 12 can improve the sealing protection of the capacitor shell 2. When the electrolyte film 6 is installed inside the capacitor shell 2, the corrosion-resistant film 7 can protect the outside of the electrolyte film 6. The corrosion-resistant film 7 and the isolation film 8 can wrap around the outside of the electrolyte film 6 to prevent corrosive materials from directly contacting the electrolyte film 6 and causing damage. When it is necessary to inspect the inside of the film capacitor, the top cover 9 on the capacitor shell 2 can be removed. When disassembling, the positioning rod 4 is pried to both sides. The positioning rod 4 can be moved out from the inside of the positioning hole 13. Then the top cover 9 can be lifted up. The mounting block 5 at the bottom of the top cover 9 can be moved out from the inside of the mounting slot 14 to complete the disassembly. This structure realizes the function of easy and quick disassembly and maintenance.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A corrosion resistant thin film capacitor comprising a capacitor housing (2) characterised in that: The inside of the capacitor shell (2) is provided with an electrolyte film (6), both sides of the electrolyte film (6) are fixedly connected with external electrodes (3), the left side of the external electrode (3) is mounted with a positive electrode lead wire (1), the right side of the external electrode (3) is mounted with a negative electrode lead wire (10), the top end of the capacitor shell (2) is mounted with a top cover (9), both sides of the top end of the capacitor shell (2) inside are fixedly connected with mounting clamping grooves (14), both sides of the bottom end of the top cover (9) are fixedly connected with mounting clamping blocks (5), the outside of the electrolyte film (6) is mounted with a corrosion-resistant film (7), the inner side of the corrosion-resistant film (7) is fixedly connected with a partition film (8), the bottom end of the capacitor shell (2) is provided with two groups of lead wire holes (11), both sides of the corrosion-resistant film (7) are fixedly connected with splicing strips (15), the outside of the external electrode (3) is fixedly connected with a splicing groove (16).

2. A corrosion resistant film capacitor as defined in claim 1, wherein: The splicing strip (15) is embedded in the inside of the splicing groove (16), and the partition film (8) is arranged outside the electrolyte film (6).

3. A corrosion resistant film capacitor as defined in claim 1, wherein: The mounting clamping block (5) is embedded in the inside of the mounting clamping groove (14), the inside of the mounting clamping block (5) is provided with a positioning insertion hole (13), and the top end of both sides of the capacitor shell (2) is movably hinged with a positioning insertion rod (4).

4. A corrosion resistant film capacitor as defined in claim 3, wherein: The positioning insertion rod (4) can penetrate the capacitor shell (2) and be embedded in the inside of the positioning insertion hole (13).

5. The corrosion resistant film capacitor of claim 1, wherein: The bottom end of the top cover (9) is fixedly connected with a sealing strip, and the material of the top cover (9) is the same as that of the capacitor shell (2).

6. A corrosion resistant film capacitor as defined in claim 1, wherein: The positive electrode lead wire (1) and the negative electrode lead wire (10) can penetrate the inside of the lead wire hole (11), and the inside of the lead wire hole (11) is fixedly connected with a sealing ring (12).

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