Insulation-reinforced thin film capacitor

Abstract

The utility model relates to the technical field of film capacitors, and discloses a reinforced insulation film capacitor comprising an outer packaging box, two sides of the bottom end of the outer packaging box are vertically provided with a connecting inner seat in a penetrating manner, the inner part of the outer packaging box is provided with a metal foil, and the inner part of the outer packaging box is provided with a protection assembly for reinforcing the insulation effect. The protection assembly comprises a long paperboard and a short paperboard, and the rear end of the metal foil is fixedly connected with a dielectric film. According to the reinforced insulation film capacitor, the long paper board, the short paper board, the insulation core rod, the inner connecting seat, the fixed sliding groove and the groove are arranged, so that voltage breakdown of gaps can be remarkably improved, operation of space charges is prevented, the space charges change electric field distribution, the voltage breakdown is improved, the insulation strength is improved, and the problem that only a single insulation structure is used for solving the problem that the insulation performance is poor is solved. The insulation protection range is limited, and the interior of the whole thin film capacitor cannot be uniformly covered.

Description

Technical Field

[0001] This utility model relates to the field of thin film capacitor technology, specifically to a thin film capacitor with enhanced insulation. Background Technology

[0002] As an electronic component, the core functions of a film capacitor include storing charge and filtering to ensure the purity of signals in a circuit. It also has the function of passing AC and blocking DC. In addition, it has the characteristics of high voltage resistance, long life, good temperature characteristics, safety and stability, which makes it widely used in many fields such as electronics, communications, home appliances, and medical equipment.

[0003] Currently used film capacitors have high insulation properties, but relying on a single insulation structure, the insulation protection range is limited and cannot uniformly cover the entire interior of the film capacitor.

[0004] Therefore, a novel thin-film capacitor with enhanced insulation is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a film capacitor with enhanced insulation, in order to solve the problems mentioned in the background art, which are limited in insulation protection range and cannot uniformly cover the entire interior of the film capacitor by relying on a single insulation structure.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a thin-film capacitor with enhanced insulation, comprising an outer packaging box, wherein connecting inner seats are vertically arranged through both sides of the bottom end of the outer packaging box, a metal foil is arranged inside the outer packaging box, and a protective component for enhanced insulation is arranged inside the outer packaging box.

[0007] The protective component includes a long cardboard and a short cardboard. A dielectric film is fixedly connected to the rear end of the metal foil. An insulating core rod is fixedly connected to one end of the dielectric film and the metal foil and is wound into a cylindrical shape. The insulating core rod is laterally located at the center of the cylindrical position. Multiple sets of internal connectors are fixedly connected to the top and bottom ends of the dielectric film and the metal foil. The sidewall of the internal connector is provided with a fixing groove. The long cardboard and the short cardboard are both disposed inside the dielectric film and the metal foil.

[0008] Preferably, pull plates are fixedly connected to the front and rear ends of the outer sides of the long cardboard and the short cardboard, and two sets of long cardboard and short cardboard are provided, with the two sets of long cardboard located at the two ends of the two sets of short cardboard respectively.

[0009] Preferably, the sidewall of the fixed groove is provided with a groove, and the two ends of the long cardboard and the two ends of the short cardboard are respectively inserted into the interior of the corresponding groove.

[0010] Preferably, a through groove is provided inside the inner connecting seat, and a wire is vertically provided inside the inner connecting seat. The top of the side wall of the wire is fixedly connected to the side wall of the insulating core rod. The top of the wire is located inside the outer packaging box, and a top plate is fixedly connected to both sides inside the outer packaging box.

[0011] Preferably, a positioning block is fixedly connected to the bottom end of the top plate, and the top end of the wire is fixedly connected to the bottom end of the positioning block.

[0012] Preferably, a supporting outer ring is fixedly connected to the inner wall of the through groove of the connecting inner seat, and a supporting inner ring is provided inside the supporting outer ring. Multiple sets of connecting brackets are fixedly connected between the supporting outer ring and the supporting inner ring.

[0013] Preferably, two sets of limiting seats are horizontally fixedly connected to the top of the inside of the outer packaging box, and two sets of side plates are fixedly connected to the top of the inside of the outer packaging box, with the two sides of the limiting seats fixedly connected to the inner side of the side plates.

[0014] Preferably, a baffle is fixedly connected to the outer end of the limiting seat, the bottom end of the baffle is lower than the bottom end of the limiting seat, and an adhesive layer is fixedly connected to the inner end of the baffle.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the reinforced insulation film capacitor not only achieves strong insulation function and support and fixation function, but also achieves limit protection function;

[0016] (1) By setting up long cardboard, short cardboard, insulating core rod, inner seat, fixing slide and groove, the insulating core rod is horizontally fixed at the center of the metal foil and electrolyte film cylinder. At the same time, the addition of long cardboard and short cardboard can significantly improve the voltage breakdown of the gap, prevent the movement of space charge, and cause the space charge to change the electric field distribution, thereby improving the voltage breakdown. Since the like charges repel each other, they are evenly distributed on the long cardboard and short cardboard, improving the insulation strength. The insulation range covers the entire outer packaging box. The long cardboard and short cardboard are fixed in the corresponding groove by the plug-in connection method to ensure that the long cardboard and short cardboard will not be displaced and reduce the insulation effect.

[0017] (2) By setting up a connecting inner seat, top plate, positioning block, supporting inner ring, supporting outer ring and connecting frame, two sets of wires vertically pass through the interior of the connecting outer seat and are fixedly connected to both sides of the dielectric film. The top plate and positioning block cooperate with each other to provide limit protection for the top of the wires. The supporting outer ring and supporting inner ring are both located inside the connecting inner seat, providing all-round support and fixation for the outside of the wires, preventing the wires from falling off during use, strengthening the connection force between the structures, and using the connecting frame to enhance the firmness of the supporting outer ring and supporting inner ring.

[0018] (3) By setting up limiting seats, adhesive layers, side plates and baffles, the two sets of limiting seats and the two sets of side plates form independent placement spaces, which can play a role in limiting and fixing the outside of the top of the dielectric film and the metal foil. At the same time, the baffles expand the limiting range, effectively preventing the dielectric film and the metal foil from tilting and shaking. The adhesive layer strengthens the connection force. Attached Figure Description

[0019] Figure 1 This is a front view cross-sectional structural diagram of the present invention;

[0020] Figure 2 This is a side view of the insulating core rod structure of this utility model;

[0021] Figure 3 This is a bottom view of the connecting inner seat structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the baffle structure from below.

[0023] In the diagram: 1. Wire; 2. Connecting inner seat; 3. Outer packaging box; 4. Positioning block; 5. Dielectric film; 6. Limiting seat; 7. Baffle; 8. Side plate; 9. Metal foil; 10. Top plate; 11. Insulating core rod; 12. Inner connector; 13. Long cardboard; 14. Fixing groove; 15. Short cardboard; 16. Groove; 17. Pull plate; 18. Support outer ring; 19. Connecting frame; 20. Support inner ring; 21. Adhesive layer. Detailed Implementation

[0024] 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.

[0025] Example 1: Please refer to Figure 1-4 A thin-film capacitor with enhanced insulation includes an outer packaging box 3, with connecting inner seats 2 vertically extending through both sides of the bottom end of the outer packaging box 3, a metal foil 9 disposed inside the outer packaging box 3, and a protective component for enhanced insulation disposed inside the outer packaging box 3.

[0026] The protective component includes a long cardboard 13 and a short cardboard 15. A dielectric film 5 is fixedly connected to the rear end of the metal foil 9. An insulating core rod 11 is fixedly connected to one end of the dielectric film 5 and the metal foil 9 and is wound into a cylindrical shape. The insulating core rod 11 is laterally located at the center of the cylindrical position. Multiple sets of inner connectors 12 are fixedly connected to the top and bottom ends of the dielectric film 5 and the metal foil 9. The side wall of the inner connector 12 is provided with a fixing groove 14. The long cardboard 13 and the short cardboard 15 are both disposed inside the dielectric film 5 and the metal foil 9.

[0027] Pull plates 17 are fixedly connected to the front and rear ends of the outer sides of the long cardboard 13 and the short cardboard 15. There are two sets of long cardboard 13 and short cardboard 15, and the two sets of long cardboard 13 are located at the two ends of the two sets of short cardboard 15 respectively.

[0028] The side wall of the fixed slide 14 is provided with a groove 16, and the two ends of the long cardboard 13 and the two ends of the short cardboard 15 are respectively inserted into the interior of the corresponding groove 16.

[0029] Specifically, such as Figure 1 and Figure 2 As shown, during use, the dielectric film 5 and the metal foil 9 are wound into a cylindrical shape and placed inside the outer packaging box 3. The insulating core rod 11 is horizontally fixed at the center of the cylindrical position to provide insulation. At the same time, the two ends of the long cardboard 13 and the short cardboard 15 are inserted into the fixing groove 14 by the pull plate 17 until they are inserted and fixed in the corresponding groove 16, thus fixing the long cardboard 13 and the short cardboard 15 in the current position and ensuring that the insulation protection covers the entire outer packaging box 3.

[0030] Example 2: The side wall of the fixed slide 14 is provided with a groove 16, and the two ends of the long cardboard 13 and the two ends of the short cardboard 15 are respectively inserted into the interior of the corresponding groove 16;

[0031] A through groove is provided inside the inner seat 2, and a wire 1 is vertically provided inside the inner seat 2. The top of the side wall of the wire 1 is fixedly connected to the side wall of the insulating core rod 11. The top of the wire 1 is located inside the outer packaging box 3. The top plate 10 is fixedly connected to both sides inside the outer packaging box 3.

[0032] A positioning block 4 is fixedly connected to the bottom end of the top plate 10, and the top end of the wire 1 is fixedly connected to the bottom end of the positioning block 4.

[0033] A supporting outer ring 18 is fixedly connected to the inner wall of the through groove of the connecting inner seat 2. A supporting inner ring 20 is provided inside the supporting outer ring 18. Multiple sets of connecting brackets 19 are fixedly connected between the supporting outer ring 18 and the supporting inner ring 20.

[0034] Specifically, such as Figure 1 and Figure 3As shown, during use, the two sets of wires 1 vertically penetrate the interior of the outer connector 2 and are fixedly connected to both sides of the dielectric film 5. The top plate 10 and the positioning block 4 cooperate to provide limiting protection for the top of the wires 1. The outer support ring 18 and the inner support ring 20 are both located inside the inner connector 2, providing all-round support and fixation for the exterior of the wires 1 to prevent the wires 1 from falling off during use.

[0035] Example 3: Two sets of limiting seats 6 are horizontally fixedly connected to the top of the inside of the outer packaging box 3, and two sets of side plates 8 are fixedly connected to the top of the inside of the outer packaging box 3. The two sides of the limiting seats 6 are fixedly connected to the inner side of the side plates 8.

[0036] A baffle 7 is fixedly connected to the outer end of the limiting seat 6. The bottom end of the baffle 7 is lower than the bottom end of the limiting seat 6. An adhesive layer 21 is fixedly connected to the inner end of the baffle 7.

[0037] Specifically, such as Figure 1 and Figure 4 As shown, during use, the two sets of limiting seats 6 and the two sets of side plates 8 form an independent placement space, which can limit and fix the outer top of the dielectric film 5 and the metal foil 9. At the same time, the baffle 7 expands the limiting range, effectively preventing the dielectric film 5 and the metal foil 9 from tilting and shaking. The bonding force is strengthened by the adhesive layer 21.

[0038] Working principle: In use, two sets of wires 1 vertically penetrate the interior of the connecting outer seat 2 and are fixedly connected to both sides of the dielectric film 5. The top plate 10 and the positioning block 4 cooperate to provide limiting protection for the top of the wires 1. The supporting outer ring 18 and the supporting inner ring 20 are both located inside the connecting inner seat 2, providing all-round support and fixation for the exterior of the wires 1. The dielectric film 5 and the metal foil 9 are wound into a cylindrical shape and located inside the outer packaging box 3. The insulating core rod 11 is horizontally fixed at the center of the cylindrical position to play an insulating role. At the same time, the two ends of the long cardboard 13 and the short cardboard 15 are inserted into the fixing groove 14 by the pull plate 17 until they are inserted and fixed in the corresponding groove 16, fixing the long cardboard 13 and the short cardboard 15 in the current position to ensure that the insulation protection covers the entire outer packaging box 3.

[0039] 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 reinforced insulated thin film capacitor comprising an outer casing (3) characterised in that: The outer packaging box (3) bottom end of both sides of vertical through connection inner seat (2) is provided with, the inside of outer packaging box (3) is provided with metal foil (9), the inside of outer packaging box (3) is provided with the protection assembly of reinforcing insulation effect; The rear end of the metal foil (9) is fixedly connected with a dielectric film (5), one end of the dielectric film (5) and the metal foil (9) is fixedly connected with an insulating core rod (11), and is wound into a cylindrical shape, the insulating core rod (11) is transversely located at the center of the cylindrical position, the top end and the bottom end inside the dielectric film (5) and the metal foil (9) are fixedly connected with a plurality of inner sockets (12), the side wall of the inner socket (12) is provided with a fixed sliding groove (14), the long paperboard (13) and the short paperboard (15) are both provided in the inside of the dielectric film (5) and the metal foil (9).

2. A reinforced insulated film capacitor according to claim 1, wherein: The front end and the rear end of the outside of the long paperboard (13) and the short paperboard (15) are fixedly connected with a pull plate (17), the long paperboard (13) and the short paperboard (15) are both provided with two groups, and the two groups of long paperboard (13) are respectively located at both ends of the two groups of short paperboard (15).

3. A reinforced insulated film capacitor according to claim 1, wherein: The side wall of the fixed sliding groove (14) is provided with a groove (16), and the two ends of the long paperboard (13) and the two ends of the short paperboard (15) are respectively inserted and connected in the inside of the corresponding groove (16).

4. A reinforced insulated film capacitor according to claim 1, wherein: The inside of the connecting inner seat (2) is provided with a through groove, and the inside of the connecting inner seat (2) is vertically provided with a wire (1), the top of the side wall of the wire (1) is fixedly connected with the side wall of the insulating core rod (11), the top end of the wire (1) is located in the inside of the outer packaging box (3), and the two sides of the inside of the outer packaging box (3) are fixedly connected with a top plate (10).

5. A reinforced insulated film capacitor according to claim 4, wherein: The bottom end of the top plate (10) is fixedly connected with a positioning block (4), and the top end of the wire (1) is fixedly connected with the bottom end of the positioning block (4).

6. A reinforced insulated film capacitor according to claim 4, wherein: The inner wall of the through groove of the connecting inner seat (2) is fixedly connected with a supporting outer ring (18), the inside of the supporting outer ring (18) is provided with a supporting inner ring (20), and a plurality of connecting frames (19) are fixedly connected between the supporting outer ring (18) and the supporting inner ring (20).

7. A reinforced insulated film capacitor according to claim 1, wherein: The top end of the inside of the outer packaging box (3) is transversely fixedly connected with two groups of limiting seats (6), the top end of the inside of the outer packaging box (3) is fixedly connected with two groups of side plates (8), and the two sides of the limiting seat (6) are fixedly connected with the inner sides of the side plates (8).

8. A reinforced insulated film capacitor according to claim 7, wherein: The outer end of the limiting seat (6) is fixedly connected with a baffle (7), the bottom end position of the baffle (7) is lower than the bottom end position of the limiting seat (6), and the inner end of the baffle (7) is fixedly connected with a sticking layer (21).

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