A new type of heat dissipation capacitor

Abstract

The utility model discloses a novel heat dissipation capacitor, which relates to the technical field of capacitors, and is designed to solve the problem that the existing aluminum electrolytic capacitor core is directly placed in an aluminum shell, lacks a fast heat conduction structure, and is easy to affect the service life of the capacitor. A side heat dissipation silicone cover is arranged on the inner wall of the aluminum shell; a bottom heat dissipation silicone cover is installed on the bottom surface of the aluminum shell; a capacitor core is installed inside the side heat dissipation silicone cover, and a strip heat dissipation groove is arranged on the outer wall of the bottom heat dissipation silicone cover, and a plurality of strip heat dissipation grooves are arranged, and the plurality of strip heat dissipation grooves are equidistantly distributed. The capacitor core is wound by a positive foil, a first electrolytic paper, a negative foil, and a second electrolytic paper, the first electrolytic paper is arranged on the outer wall of the positive foil, the negative foil is arranged on the outer wall of the first electrolytic paper, and the second electrolytic paper is arranged on the outer wall of the negative foil. A positive electrode lead is installed at one end of the positive foil, and a negative electrode lead is installed at one end of the negative foil.

Description

Technical Field

[0001] The utility model relates to the technical field of capacitors, in particular to a novel heat dissipation capacitor. Background Art

[0002] During operation, aluminum electrolytic capacitors will generate heat due to the applied voltage and ripple current. On the other hand, the heat generated by other components will also be radiated to it. If excessive heat cannot be conducted away in time, it will accelerate the aging of the product and premature failure.

[0003] The existing aluminum electrolytic capacitor core is directly placed in the aluminum shell, lacks a fast heat conduction structure, and is likely to affect the service life of the capacitor; therefore, we propose a new type of heat dissipation capacitor to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a novel heat dissipation capacitor to solve the problem in the above background technology that the existing aluminum electrolytic capacitor core is directly placed in the aluminum shell, lacks a fast heat conduction structure, and is easy to affect the service life of the capacitor.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel heat dissipation capacitor, comprising an aluminum shell;

[0006] Also includes:

[0007] A side heat dissipation silicone cover, which is arranged on the inner wall of the aluminum shell;

[0008] A bottom heat dissipation silicone cover, which is installed on the bottom surface of the aluminum shell;

[0009] The capacitor core is installed inside the side heat dissipation silicone cover.

[0010] Preferably, the outer wall of the bottom heat dissipation silicone cover is provided with strip-shaped heat dissipation grooves, a plurality of strip-shaped heat dissipation grooves are provided, and the plurality of strip-shaped heat dissipation grooves are equidistantly distributed.

[0011] Preferably, the capacitor core is wound by a positive foil, a first electrolytic paper, a negative foil, and a second electrolytic paper, the first electrolytic paper is arranged on the outer wall of the positive foil, the negative foil is arranged on the outer wall of the first electrolytic paper, the second electrolytic paper is arranged on the outer wall of the negative foil, a positive lead is installed at one end of the positive foil, and a negative lead is installed at one end of the negative foil.

[0012] Preferably, an adhesive tape is installed on the outer wall of one end of the second electrolytic paper.

[0013] Preferably, sealing rings are installed at the connections between the positive electrode lead, the negative electrode lead and the aluminum shell.

[0014] Preferably, a plurality of titanium metal powders are disposed inside the side heat dissipation silicone cover and the bottom heat dissipation silicone cover.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model arranges side heat dissipation silicone covers and bottom heat dissipation silicone covers on the inner wall and bottom surface of the aluminum shell, has a simple structure, a novel design, good heat dissipation performance, improves the safety of the capacitor, and can reduce the pressure on the capacitor, solving the problem that the existing aluminum electrolytic capacitor core is directly placed in the aluminum shell, lacks a fast heat conduction structure, and is easy to affect the service life of the capacitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the partial structure of the capacitor core of the utility model;

[0019] Figure 3 This is a schematic diagram of the partial structure of the side heat dissipation silicone cover of the utility model;

[0020] In the figure: 1. Aluminum shell; 2. Side heat dissipation silicone cover; 3. Bottom heat dissipation silicone cover; 4. Strip heat dissipation groove; 5. Capacitor core; 501. Positive foil; 502. First electrolytic paper; 503. Negative foil; 504. Second electrolytic paper; 6. Tape; 7. Negative lead; 8. Positive lead; 9. Sealing ring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figure 1-3 , an embodiment provided by the utility model: a novel heat dissipation capacitor, comprising an aluminum shell 1;

[0023] Also includes:

[0024] A side heat dissipation silicone cover 2, which is arranged on the inner wall of the aluminum shell 1;

[0025] A bottom heat dissipation silicone cover 3, which is installed on the bottom surface of the aluminum shell 1;

[0026] The capacitor core 5 is installed inside the side heat dissipation silicone cover 2;

[0027] When in use, the inner wall and bottom surface of the aluminum shell 1 are provided with a side heat dissipation silicone cover 2 and a bottom heat dissipation silicone cover 3, which work together to prevent the core and the side of the aluminum shell from colliding and short-circuiting and bursting, and on the other hand, the silicone heat sink has good thermal conductivity, which can quickly conduct heat away and increase the service life of the product.

[0028] See also Figure 1 The outer wall of the bottom heat dissipation silicone cover 3 is provided with strip heat dissipation grooves 4, and a plurality of strip heat dissipation grooves 4 are provided, and the plurality of strip heat dissipation grooves 4 are evenly distributed. The bottom heat dissipation silicone cover 3 can quickly transfer the heat of the capacitor to increase the service life of the product, and the plurality of strip heat dissipation grooves 4 in the bottom heat dissipation silicone cover 3 can provide air circulation, thereby increasing the contact area between the bottom heat dissipation silicone cover 3 and the air, so as to improve the heat dissipation effect.

[0029] See also Figure 2 The capacitor core 5 is wound by a positive foil 501, a first electrolytic paper 502, a negative foil 503, and a second electrolytic paper 504. The first electrolytic paper 502 is arranged on the outer wall of the positive foil 501, the negative foil 503 is arranged on the outer wall of the first electrolytic paper 502, and the second electrolytic paper 504 is arranged on the outer wall of the negative foil 503. A positive lead 8 is installed at one end of the positive foil 501, and a negative lead 7 is installed at one end of the negative foil 503. The electrolytic paper can improve the lightning resistance of the capacitor core 5.

[0030] See also Figure 2 An adhesive tape 6 is installed on the outer wall of one end of the second electrolytic paper 504, and the adhesive tape 6 is used to fix the capacitor core 5 after it is wound.

[0031] See also Figure 1 A sealing ring 9 is installed at the connection between the positive lead 8 and the negative lead 7 and the aluminum shell 1. The sealing ring 9 improves the sealing effect of the connection between the positive lead 8 and the negative lead 7 and the aluminum shell 1, and enhances the waterproof and dustproof performance of the capacitor.

[0032] Furthermore, a number of titanium metal powders are arranged inside the side heat dissipation silicone cover 2 and the bottom heat dissipation silicone cover 3. The side heat dissipation silicone cover 2 and the bottom heat dissipation silicone cover 3 are solidified from liquid silicone. Adding titanium metal powders into the liquid silicone during processing can significantly improve the thermal conductivity of the side heat dissipation silicone cover 2 and the bottom heat dissipation silicone cover 3 and improve the heat dissipation effect.

[0033] Working principle: When in use, the inner wall and bottom surface of the aluminum shell 1 are provided with a side heat dissipation silicone cover 2 and a bottom heat dissipation silicone cover 3. The two work together to prevent the core and the side of the aluminum shell from colliding and short-circuiting and blasting. On the other hand, the silicone heat sink has good thermal conductivity, which can quickly conduct heat and increase the service life of the product. The multiple strip heat dissipation grooves 4 in the bottom heat dissipation silicone cover 3 can provide air circulation, increase the contact area between the bottom heat dissipation silicone cover 3 and the air, and further improve the heat dissipation effect.

[0034] Experimental data:

[0035] Sample preparation specifications: 100 / 4500 Size: 18x30mm;

[0036] Insert the temperature sensing test wire into the inner core of the capacitor and measure the temperature difference between it and the outer ring. The test results are as follows:

[0037]

[0038] Note: The value is the maximum temperature rise test value.

[0039] in conclusion:

[0040] Judging from the experimental data, the novel design product has excellent heat dissipation performance and can quickly conduct the internal temperature away.

[0041] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A novel heat dissipation capacitor, comprising an aluminum shell (1); Features: Also includes: A side heat dissipation silicone cover (2), which is arranged on the inner wall of the aluminum shell (1); A bottom heat dissipation silicone cover (3) mounted on the bottom surface of the aluminum shell (1); A capacitor core (5) is installed inside the side heat dissipation silicone cover (2).

2. A novel heat dissipation capacitor according to claim 1, characterized in that: The outer wall of the bottom heat dissipation silicone cover (3) is provided with strip-shaped heat dissipation grooves (4), a plurality of strip-shaped heat dissipation grooves (4) are provided, and the plurality of strip-shaped heat dissipation grooves (4) are distributed at equal distances.

3. A novel heat dissipation capacitor according to claim 1, characterized in that: The capacitor core (5) is formed by winding a positive foil (501), a first electrolytic paper (502), a negative foil (503), and a second electrolytic paper (504); the first electrolytic paper (502) is arranged on the outer wall of the positive foil (501); the negative foil (503) is arranged on the outer wall of the first electrolytic paper (502); the second electrolytic paper (504) is arranged on the outer wall of the negative foil (503); a positive electrode lead (8) is installed at one end of the positive foil (501); and a negative electrode lead (7) is installed at one end of the negative foil (503).

4. A novel heat dissipation capacitor according to claim 3, characterized in that: An adhesive tape (6) is installed on the outer wall of one end of the second electrolytic paper (504).

5. The novel heat dissipation capacitor according to claim 3 is characterized in that: Sealing rings (9) are installed at the connection points between the positive electrode lead (8) and the negative electrode lead (7) and the aluminum shell (1).

6. A novel heat dissipation capacitor according to claim 1, characterized in that: A plurality of titanium metal powders are arranged inside the side heat dissipation silicone cover (2) and the bottom heat dissipation silicone cover (3).

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