CN210443427U

CN210443427U - Capacitor shell and capacitor

Info

Publication number: CN210443427U
Application number: CN201920808381.4U
Authority: CN
Inventors: 季张林; 丁继华; 陆亚平; 徐永华; 丰骏
Original assignee: NANTONG JIANGHAI CAPACITOR CO Ltd
Current assignee: NANTONG JIANGHAI CAPACITOR CO Ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-05-01
Anticipated expiration: 2029-05-30

Abstract

The utility model relates to a condenser field, in particular to capacitor shell and condenser. The capacitor shell comprises a bottom wall and a side wall, wherein the bottom wall is connected with the side wall, the bottom wall and the side wall form a cavity for accommodating a capacitor core package, the outer side of the cavity is provided with a structure for increasing the heat dissipation area, and the structure for increasing the heat dissipation area and the shell are integrally formed. The utility model discloses a structure that sets up the increase heat radiating area at capacitor case body can increase capacitor case heat radiating area to effectively give off condenser radiant heat, reduce the inside temperature rise of condenser, simple manufacture, with low costs moreover.

Description

Capacitor shell and capacitor

Technical Field

The utility model relates to a condenser field, in particular to capacitor shell and condenser.

Background

The capacitor is one of electronic elements widely used in electronic equipment, and is widely applied to aspects of blocking AC, coupling, bypassing, filtering, tuning loop, energy conversion, control and the like in a circuit. The capacitor generally comprises a shell, a core package, a packaging material and a lead wire for connecting the core package and a lead-out terminal, the outer wall of the shell of the existing capacitor is of a plane structure, the heat dissipation performance is poor, the electrolytic capacitor adopting the aluminum shell can generate heat in the assembling process or the working process, the heat dissipation effect of the capacitor is poor, the heat in the capacitor can not be dissipated for a long time, the aging of the capacitor can be accelerated, and the service life of the capacitor can be directly influenced; in addition, if the heat inside the capacitor is accumulated to a certain degree, the housing may be expanded and deformed, and in a serious case, the housing may even explode.

In the capacitor in the prior art, the outer wall of the shell is mostly of a plane structure, and the heat dissipation performance is poor; or the outer surface of the shell is additionally provided with radiating fins, radiating fins and the like so as to achieve the radiating purpose. However, the capacitor is not easy to be mounted, and the use cost is increased.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is that the heat dissipation of current capacitor case is poor, and is bulky, problem with high costs.

In order to solve the technical problem, on the one hand, the utility model discloses a capacitor shell, including diapire and lateral wall, the diapire with the lateral wall is connected, the diapire with the lateral wall forms the cavity that is used for holding the condenser core package, the outside of cavity has the structure that is used for increasing heat radiating area, increase heat radiating area's structure with casing integrated into one piece.

In one embodiment, the structure for increasing the heat dissipation area is that the bottom wall is provided with a concave groove, and the concave groove and the outer surface of the bottom wall form a step surface.

In one embodiment, the structure for increasing the heat dissipation area is that the bottom wall of the housing is provided with a trapezoidal recess, and the trapezoidal recess has a sawtooth-shaped side wall.

As an embodiment, the structure for increasing the heat dissipation area is that the bottom wall of the housing is recessed inwards in a step shape, and the thickness of the bottom wall of the housing is reduced along the step surface in sequence.

In one embodiment, the structure for increasing the heat dissipation area is a wavy curved surface provided on the bottom wall of the housing, and the wavy curved surface has a plurality of convex regions or a plurality of concave regions.

As an implementation manner, the structure for increasing the heat dissipation area is that the side wall of the shell is provided with a plurality of conical grooves, and the conical grooves are distributed along the circumferential direction of the outer wall of the shell.

As an embodiment, the structure for increasing the heat dissipation area is that the side wall of the casing is uniformly provided with a plurality of turns of spiral grooves along the circumferential direction.

Furthermore, the shell is made of any one or a combination of more of aluminum, nickel, copper, manganese and zinc.

On the other hand, the utility model also discloses a condenser, the condenser includes core package and sealing member, the condenser still includes as above the capacitor case.

Further, an explosion-proof valve is arranged in the cavity structure, and the explosion-proof valve is arranged on the bottom wall or the side wall of the cavity.

Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:

1) the utility model discloses a structure that sets up the increase heat radiating area at capacitor case body can increase capacitor case heat radiating area to effectively give off condenser radiant heat, reduce the inside temperature rise of condenser, simple manufacture, with low costs moreover.

2) The utility model realizes the miniaturization of the capacitor on the premise of meeting the heat dissipation of the shell by arranging the structure for increasing the heat dissipation area on the bottom wall or the side wall of the shell;

3) the utility model discloses a set up explosion-proof valve in the capacitor case intracavity, during the circuit abnormal state, can prevent effectively that the condenser from bringing the destructive inefficacy because the too much energy of accumulation.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a capacitor case;

FIG. 2 is a schematic cross-sectional view of a capacitor case;

FIG. 3 is a schematic cross-sectional view of a capacitor case;

FIG. 4 is a schematic cross-sectional view of a capacitor case;

FIG. 5 is a schematic cross-sectional view of a capacitor case;

FIG. 6 is a schematic structural view of a capacitor case;

FIG. 7 is a schematic structural view of a capacitor case;

the following is a supplementary description of the drawings:

10-a side wall; 20-bottom wall.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with at least one implementation of the invention is included. In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

Example 1:

as shown in fig. 1 to 5, the capacitor casing includes a bottom wall and a side wall, the bottom wall is connected to the side wall, a cavity for accommodating a capacitor core package is formed on the bottom wall and the side wall, a structure for increasing a heat dissipation area is provided on an outer side of the cavity, and the structure for increasing the heat dissipation area is integrally formed with the casing.

The structure for increasing the heat dissipation area is arranged on the outer surface of the bottom wall of the shell.

The structure for increasing the heat dissipation area is directly arranged on the shell, so that the assembly trouble caused by an additional heat dissipation body is avoided, the cost is saved, and the miniaturization of the capacitor is facilitated.

The structure for increasing the heat dissipation area is that the outer surface of the bottom wall is designed into a groove-shaped structure, the shape of the groove can be circular, rectangular or polygonal, and the groove and the outer surface of the bottom wall form a step surface. The side of recess can be perpendicular to the diapire plane, also can have the slope of certain degree, specifically can design according to the use scene is nimble.

Preferably, the structure for increasing the heat dissipation area is that the bottom wall of the shell is in a step shape and is inwards sunken, and the thickness of the bottom wall of the shell is reduced along the step surface in sequence.

Further preferably, the structure for increasing the heat dissipation area is that the bottom wall of the housing is provided with a trapezoidal recess having a saw-toothed side wall.

Further preferably, the structure for increasing the heat dissipation area is a wavy curved surface arranged on the bottom wall of the housing, and the wavy curved surface has a plurality of convex areas or a plurality of concave areas.

The surface area of the shell can be increased by adopting the stepped depressions, the sawtooth depressions or the wavy depressions, so that heat dissipation is facilitated;

the shell is made of aluminum. The case of the heat-dissipating capacitor may be made of a material having good heat dissipation properties, such as aluminum alloy, copper, zinc, nickel, or manganese.

The capacitor comprises a core package and a sealing component, and further comprises the capacitor shell. The capacitor core package is arranged in the cavity of the capacitor shell, and the sealing component seals the cavity.

An explosion-proof valve is arranged in the cavity structure. The explosion-proof valve is arranged on the bottom wall in the cavity, so that the shell can be prevented from deforming and damaging the capacitor.

Example 2:

as shown in fig. 6 and 7, the capacitor shell includes a bottom wall and a side wall, the bottom wall is connected to the side wall, a cavity for accommodating a capacitor core package is formed on the bottom wall and the side wall, a structure for increasing a heat dissipation area is provided outside the cavity, and the structure for increasing the heat dissipation area is integrally formed with the shell.

The structure for increasing the heat dissipation area is arranged on the outer surface of the side wall of the shell.

The structure for increasing the heat dissipation area is that the side wall of the shell is provided with a plurality of conical grooves, and the conical grooves are circumferentially and uniformly distributed on the outer wall of the shell.

Preferably, the structure for increasing the heat dissipation area is that the side wall of the shell is uniformly provided with a plurality of circles of spiral grooves along the circumferential direction.

On the premise of not increasing the volume of the shell, the heat dissipation area of the shell can be increased by arranging the grooves on the surface of the side wall of the shell.

The shell is made of aluminum.

The capacitor comprises a core package and a cover plate, and further comprises the capacitor shell. The capacitor core package is arranged in the cavity of the capacitor shell, and the cover plate seals the cavity.

An explosion-proof valve is arranged in the cavity structure. The explosion-proof valve is arranged on the inner side wall of the cavity body, so that the shell can be prevented from deforming and damaging the capacitor.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A capacitor case, comprising a bottom wall and a side wall, wherein the bottom wall is connected to the side wall, and the bottom wall and the side wall form a cavity for accommodating a capacitor core package, the capacitor case characterized in that:

the outer side of the cavity is provided with a structure for increasing the heat dissipation area, and the structure for increasing the heat dissipation area and the shell are integrally formed.

2. The capacitor case of claim 1, wherein: the structure for increasing the heat dissipation area is that the bottom wall is provided with a concave groove, and the concave groove and the outer surface of the bottom wall form a step surface.

3. The capacitor case of claim 1, wherein: the structure for increasing the heat dissipation area is that the bottom wall of the shell is provided with a trapezoidal recess, and the trapezoidal recess is provided with a sawtooth-shaped side wall.

4. The capacitor case of claim 1, wherein: the structure for increasing the heat dissipation area is that the bottom wall of the shell is in a step shape and is inwards sunken, and the thickness of the bottom wall of the shell is sequentially reduced along the step surface.

5. The capacitor case of claim 1, wherein: the structure for increasing the heat dissipation area is a wavy curved surface arranged on the bottom wall of the shell, and the wavy curved surface is provided with a plurality of upward convex areas or a plurality of downward convex areas.

6. The capacitor case of claim 1, wherein: the structure for increasing the heat dissipation area is that the side wall of the shell is provided with a plurality of conical grooves, and the conical grooves are distributed along the circumferential direction of the outer wall of the shell.

7. The capacitor case of claim 1, wherein: the structure for increasing the heat dissipation area is that the side wall of the shell is evenly provided with a plurality of circles of spiral grooves along the circumferential direction.

8. A capacitor comprising a core package and a sealing member, wherein: the capacitor further comprising a capacitor case according to any one of claims 1-7.

9. The capacitor of claim 8, wherein: an explosion-proof valve is arranged in the cavity and is arranged on the bottom wall or the side wall of the cavity.