Multi-layer ceramic high-voltage capacitor

Abstract

The multilayer ceramic high-voltage capacitor comprises end electrodes and a ceramic body, the inner sides of the two end electrodes are attached to the left side and the right side of the ceramic body respectively, the inner wall of the ceramic body is connected with a capacitor structure, the outer walls of the end electrodes are connected with a reinforcing structure, and the bottoms of the outer sides of the two end electrodes are fixedly connected with bases respectively. A screw rod penetrates through two square plates from back to front, the rear portion of the outer wall of the screw rod is attached to the rear square plate, then a lantern ring is in threaded connection with the front portion of the outer wall of the screw rod till the rear portion of the outer wall of the lantern ring abuts against the front face of the front square plate, at the moment, tightening force towards the inner side is formed by the square plates, and then the square plates drive the square frame to retract towards the inner side. The pressing force is formed on the outer side of the joint of the square frame, so that the connection stability of the terminal electrode and the ceramic body is improved, the service life of the ceramic high-voltage capacitor is ensured, and the normal use of the ceramic high-voltage capacitor is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to multilayer ceramic high voltage capacitor especially multilayer ceramic high voltage capacitor. BACKGROUND

[0002] Multilayer ceramic high voltage capacitor plays the role of filtering in power supply circuit, can filter the high frequency noise in power supply, guarantees the stable operation of circuit.

[0003] For example, the application publication number is "CN112366084A" a kind of laminated ceramic high voltage capacitor, the inner side outer surface of resistance electrode layer and located in the inside of ceramic dielectric layer is provided with multiple internal electrode rods, the outside outer surface of ceramic dielectric layer and located between corresponding metal protective layer is provided with capacitor protective outer layer, the outside of capacitor protective outer layer and the outside outer surface of ceramic dielectric layer are provided with multiple fixed screws, the laminated ceramic high voltage capacitor, adopt three groups of structure plug-in mode to estimate, it is convenient to disassemble and install, but in the use of ceramic high voltage capacitor, the electrode end of both ends and the both ends of ceramic body are directly inserted, this installation form is not stable enough, electrode end will appear loose between ceramic body in long time use, shorten the service life of ceramic high voltage capacitor, affect the normal use of ceramic high voltage capacitor. SUMMARY

[0004] The utility model solves the above-mentioned prior art problems, provides a kind of multilayer ceramic high voltage capacitor, guarantees the service life of ceramic high voltage capacitor, ensures the normal use of ceramic high voltage capacitor.

[0005] The utility model solves its technical problem and adopts the technical scheme: this multilayer ceramic high voltage capacitor, including end electrode and ceramic body, the inside of two the end electrode respectively with the left and right sides of ceramic body is attached, the inner wall of the ceramic body is connected with capacitor structure, the outer wall of the end electrode is connected with reinforcing structure, the outside bottom of two the end electrode is respectively fixedly connected with base, the inner wall of the reinforcing structure and the outer wall end portion of ceramic body are connected, the reinforcing structure includes square frame and square board, the inner wall outer side of the square frame and the outer wall of end electrode are attached, the top front and back sides of the square frame are respectively fixedly connected with the bottom of two square boards, the inner wall of the square board is inserted with screw rod, the outer wall of the screw rod is connected with the ring of screw thread.

[0006] To further improve, the inner wall of the square frame and the outer wall end portion of ceramic body are attached.

[0007] Further improvement, the rear end face of the rear square board is abutted tightly with the rear of the outer wall of the screw rod.

[0008] Further improvement, the outer wall of two the base is respectively machined with opening.

[0009] Further improve, the capacitor structure includes ceramic layer and inner electrode, the outer wall of multiple ceramic layer is all with the inner wall of ceramic body fixed connection, the inner wall of multiple ceramic layer is respectively with the outer wall of multiple inner electrode fixed connection, the left and right sides of multiple ceramic layer are respectively fixed with ceramic edge, the outer wall of ceramic edge is inserted with the inner wall of end electrode.

[0010] The utility model has the advantages of the following: the utility model discloses, through the two square frames of reinforcing structure are respectively covered in the connecting place of the outer wall of ceramic body two sides, then make the outer wall rear of screw rod and the square plate of rear side close, then the outer wall front of sleeve ring and screw rod is screwed, until the outer wall rear of sleeve ring and the square plate of front side front side resistance, when the square plate forms the tightening force of inboard, and then the square plate is inboard with square frame and is retracted, makes the square frame in the connecting place outside form the pressure force, improves the connection stability of end electrode and ceramic body, guarantees the service life of ceramic high voltage capacitor, ensures the normal use of ceramic high voltage capacitor. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structural schematic diagram of the utility model;

[0012] Figure 2 It is Figure 1 It is the structural schematic diagram of the utility model;

[0013] Figure 3 It is Figure 1 It is the connecting relation structure schematic diagram of square plate, screw rod and sleeve ring;

[0014] Figure 4 It is Figure 1 It is the connecting relation structure schematic diagram of end electrode, ceramic layer and ceramic edge;

[0015] Figure 5 It is Figure 1 It is the connecting relation structure schematic diagram of ceramic layer and inner electrode.

[0016] Mark explanation: 1, end electrode, 2, reinforcing structure, 201, square frame, 202, square plate, 203, screw rod, 204, sleeve ring, 3, capacitor structure, 301, ceramic layer, 302, inner electrode, 303, ceramic edge, 4, ceramic body, 5, base, 6, opening, 7, stand. DETAILED DESCRIPTION

[0017] The utility model will be further described in connection with the drawings:

[0018] Example 1:

[0019] Refer to the drawings Figures 1-5The multilayer ceramic high-voltage capacitor in the embodiment comprises end electrodes 1 and a ceramic body 4, the inner sides of the two end electrodes 1 are respectively attached to the left and right sides of the ceramic body 4, the material of the end electrodes 1 is silver-palladium alloy, the inner wall of the ceramic body 4 is connected with a capacitor structure 3, the outer wall of the end electrodes 1 is connected with a reinforcing structure 2, the outer sides of the two end electrodes 1 are respectively fixedly connected with bases 5, and the inner wall of the reinforcing structure 2 is connected with the outer wall end of the ceramic body 4.

[0020] The reinforcing structure 2 comprises square frames 201 and square plates 202, the inner wall outer side of the square frame 201 is attached to the outer wall of the end electrode 1, the top front and back sides of the square frame 201 are respectively fixedly connected with the bottoms of the two square plates 202, the inner wall of the square plate 202 is inserted with a screw rod 203, the screw rod 203 is pulled backward under force to be separated from the inner wall of the square plate 202, the outer wall of the screw rod 203 is threadedly connected with a sleeve ring 204, the sleeve ring 204 is rotated forward and backward through the outer wall of the screw rod 203 under force, the inner wall of the square frame 201 is attached to the outer wall end of the ceramic body 4, and the rear end surface of the square plate 202 at the rear of the outer wall of the screw rod 203 is abutted against the rear end surface of the square plate 202 at the rear;

[0021] The two square frames 201 are respectively sleeved at the connecting positions of the outer wall of the ceramic body 4 in the reinforcing structure 2, then the screw rod 203 is passed through the two square plates 202 from the rear to the front, the rear of the outer wall of the screw rod 203 is attached to the square plate 202 at the rear, then the sleeve ring 204 is threadedly connected with the front of the outer wall of the screw rod 203, until the rear of the outer wall of the sleeve ring 204 is abutted against the square plate 202 at the front, at this time, the square plate 202 forms the inward tightening force, then the square plate 202 with the square frame 201 is inwardly retracted, the square frame 201 forms the pressing force at the outer side of the connecting position, the connection stability of the end electrode 1 and the ceramic body 4 is improved, the service life of the ceramic high-voltage capacitor is ensured, and the normal use of the ceramic high-voltage capacitor is ensured.

[0022] The outer walls of the two bases 5 are respectively processed with openings 6, the capacitor structure 3 comprises ceramic layers 301 and inner electrodes 302, the outer walls of the plurality of ceramic layers 301 are respectively fixedly connected with the inner wall of the ceramic body 4, the inner walls of the plurality of ceramic layers 301 are respectively fixedly connected with the outer walls of the plurality of inner electrodes 302, the inner electrode 302 is made of carbon material, the left and right sides of the plurality of ceramic layers 301 are respectively fixedly connected with ceramic edges 303, and the outer walls of the ceramic edges 303 are inserted into the inner walls of the end electrodes 1.

[0023] Working principle:

[0024] Ceramic high-voltage capacitor installation and reinforcement:

[0025] The ceramic edges 303 at both ends of the ceramic layer 301 are respectively inserted with the inner walls of the end electrodes 1, the inner sides of the two end electrodes 1 are respectively attached to the left and right sides of the ceramic body 4, then the two square frames 201 are respectively sleeved at the connecting positions of the outer walls of the ceramic body 4, then the screw rods 203 are passed through the two square plates 202 from back to front, the outer wall rear of the screw rod 203 is attached to the square plate 202 at the rear, then the sleeve ring 204 is threadedly connected with the outer wall front of the screw rod 203, until the outer wall rear of the sleeve ring 204 is tightly attached to the square plate 202 at the front, at this time, the square plate 202 forms the inwardly closing force, and then the square plate 202 brings the square frame 201 to close inwardly, so that the square frame 201 forms the pressing force at the connecting position outside, and the connection stability of the end electrode 1 and the ceramic body 4 is improved.

[0026] The plurality of ceramic layers 301 and the inner electrode 302 are overlapped and placed, and meanwhile the ceramic body 4 is wrapped outside to form the multilayer ceramic high-voltage capacitor.

[0027] The bottom of the base 5 at both sides of the multilayer ceramic high-voltage capacitor is attached to the connecting position, then the bolt is passed through the opening 6 from top to bottom and connected with the connecting position, until the top cap at the top of the bolt is pressed against the top of the base 5.

[0028] In use of the multilayer ceramic high-voltage capacitor, when the end electrodes 1 at both ends apply voltage, the positive and negative charges in the ceramic medium will be displaced to form an electric field, thereby storing electric energy, and the capacity of the MLCC is related to the number of ceramic layers and the dielectric constant of the medium in the structure, the more the number of layers and the greater the dielectric constant, the greater the capacity of the capacitor.

[0029] Embodiment 2:

[0030] Referring to the drawings Figures 1-5 In this embodiment, the multilayer ceramic high-voltage capacitor further comprises a stand column 7, and the top of the stand column 7 is fixedly connected with the bottom of the ceramic body 4.

[0031] Working principle:

[0032] After the multilayer ceramic high-voltage capacitor is installed, the bottom of the stand column 7 at the bottom is in contact with the connecting surface, and the stand column 7 supports the ceramic body 4, thereby improving the installation stability of the multilayer ceramic high-voltage capacitor.

[0033] Although the utility model has been illustrated and described by referring to the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details can be made within the scope of the claims.

Claims

1. A multilayer ceramic high-voltage capacitor comprising end electrodes (1) and a ceramic body (4), the inner sides of both of the end electrodes (1) being respectively fitted to the left and right sides of the ceramic body (4), characterized in that: The inner wall of the ceramic body (4) is connected with a capacitor structure (3), the outer wall of the end electrode (1) is connected with a reinforcing structure (2), the outer side bottom of the two end electrodes (1) is respectively fixedly connected with a base (5), and the inner wall of the reinforcing structure (2) is connected with the outer wall end of the ceramic body (4). ​ The reinforcing structure (2) comprises a square frame (201) and a square plate (202), the inner wall outer side of the square frame (201) is matched with the outer wall of the end electrode (1), the top front and back sides of the square frame (201) are respectively fixedly connected with the bottoms of the two square plates (202), the inner wall of the square plate (202) is inserted with a screw rod (203), and the outer wall of the screw rod (203) is threadedly connected with a sleeve ring (204).

2. The multilayer ceramic high voltage capacitor of claim 1, wherein: The inner wall of the square frame (201) is matched with the outer wall end of the ceramic body (4).

3. The multilayer ceramic high voltage capacitor of claim 2, wherein: The outer wall rear of the screw rod (203) is abutted against the rear end face of the rear square plate (202).

4. The multilayer ceramic high voltage capacitor of claim 1, wherein: The outer walls of the two bases (5) are respectively provided with openings (6).

5. The multilayer ceramic high voltage capacitor of claim 1, wherein: The capacitor structure (3) comprises ceramic layers (301) and inner electrodes (302), the outer walls of the plurality of ceramic layers (301) are all fixedly connected with the inner wall of the ceramic body (4), the inner walls of the plurality of ceramic layers (301) are respectively fixedly connected with the outer walls of the plurality of inner electrodes (302), the left and right sides of the plurality of ceramic layers (301) are respectively fixedly connected with ceramic edges (303), and the outer walls of the ceramic edges (303) are inserted with the inner walls of the end electrodes (1).

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