CN216054319U

CN216054319U - Medium-high voltage aluminum electrolytic capacitor

Info

Publication number: CN216054319U
Application number: CN202121715232.7U
Authority: CN
Inventors: 梁丽珍; 陈成文
Original assignee: GUANGDONG FENGHUA BANGKE ELECTRONICS CO Ltd
Current assignee: GUANGDONG FENGHUA BANGKE ELECTRONICS CO Ltd
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2022-03-15
Anticipated expiration: 2031-07-26

Abstract

The utility model discloses a medium-high voltage aluminum electrolytic capacitor, which comprises a protective outer shell, a heat conduction inner shell arranged inside the protective outer shell, a capacitor main body arranged inside the heat conduction inner shell, and a fixing mechanism used for fixing the capacitor main body; the protective shell is provided with heat dissipation holes, and the bottom in the heat conduction inner shell is provided with a cushion pad; the fixing mechanism comprises a telescopic spring and an arc-shaped plate; can provide the buffering through the blotter between heat conduction inner shell and capacitor body, through set up expanding spring on the inner wall at the heat conduction inner shell, make the arc can be under the effect of spring force, adapt to and continue to fix the capacitor body that takes place to swell, provide the buffering between heat conduction inner shell and capacitor body, therefore, this middle and high voltage aluminum electrolytic capacitor can be through the heat conduction inner shell, the blotter, expanding spring and arc, make the buffer zone between capacitor body and protecting sheathing, avoid the bloated capacitor body spalling protecting sheathing, the security is high.

Description

Medium-high voltage aluminum electrolytic capacitor

Technical Field

The utility model relates to an aluminum electrolytic capacitor, in particular to a medium-high voltage aluminum electrolytic capacitor.

Background

The aluminum electrolytic capacitor is made by taking an aluminum cylinder as a negative electrode, filling liquid electrolyte in the aluminum cylinder and inserting a bent aluminum strip as a positive electrode; the medium-high voltage aluminum electrolytic capacitor is widely applied to general electronic circuits, and mainly used for energy storage, filtering, coupling, oscillation, phase shifting, voltage reduction, integration, memory and the like; the working electrolyte of the medium-high voltage electrolytic capacitor is used as the actual cathode of the electrolytic capacitor, occupies an extremely important position in the electrolytic capacitor product, influences whether the product can normally work for a long time and has the function of optimizing the electrical performance of the capacitor.

After the medium-high voltage capacitor in the prior art is used for a long time, the capacitor main body is easy to bulge, and in order to improve the heat dissipation performance of the medium-high voltage capacitor in the prior art, a plurality of heat dissipation holes are formed in the plastic shell of the medium-high voltage capacitor, so that the anti-cracking performance of the plastic shell is reduced, and therefore the bulged capacitor main body is easy to expand and crack the plastic shell and is poor in safety.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention aims to provide a high and medium voltage aluminum electrolytic capacitor which can avoid the bulge of the expansion shell of the capacitor body and has high safety.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a medium-high voltage aluminum electrolytic capacitor comprises a protective outer shell, a heat conduction inner shell arranged inside the protective outer shell, a capacitor main body arranged inside the heat conduction inner shell, and a fixing mechanism arranged on the inner wall of the heat conduction inner shell and used for clamping and fixing the capacitor main body; the protective shell is provided with a plurality of heat dissipation holes, and the inner bottom of the heat conduction inner shell is provided with a cushion pad; the fixing mechanism comprises a plurality of extension springs arranged on the inner wall of the heat-conducting inner shell, and one ends of the extension springs are fixedly connected with arc-shaped plates attached to the outer wall of the capacitor main body.

Preferably, the protective casing is a plastic protective casing.

Preferably, the heat-conducting inner shell is an aluminum alloy heat-conducting inner shell.

Preferably, the cushion is a rubber cushion.

Preferably, the top of the capacitor body is provided with a wiring terminal, and the wiring terminal sequentially penetrates through the heat-conducting inner shell and the protective outer shell from bottom to top.

The technical effects of the utility model are mainly embodied as follows: can provide the buffering through the blotter between heat conduction inner shell and capacitor body, through set up expanding spring on the inner wall at the heat conduction inner shell, make the arc can be under the effect of spring force, adapt to and continue to fix the capacitor body that takes place to swell, provide the buffering between heat conduction inner shell and capacitor body, therefore, this middle and high voltage aluminum electrolytic capacitor passes through the heat conduction inner shell, the blotter, expanding spring and arc, can make the buffer zone between capacitor body and protecting sheathing, avoid the bloated capacitor body spalling protecting sheathing, therefore, the security is high, and even leakage appears in the electrolyte of capacitor body, electrolyte also can only be restricted in the inside of heat conduction inner shell, thereby avoided electrolyte to pass through the outside that the louvre leaked to middle and high voltage aluminum electrolytic capacitor, the security has further been improved.

Drawings

FIG. 1 is a schematic structural diagram of a medium-high voltage aluminum electrolytic capacitor according to the present invention;

fig. 2 is a schematic diagram of an internal top view structure of fig. 1.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in order to make the technical solution of the present invention easier to understand and understand.

In the present embodiment, it should be understood that the terms "middle", "upper", "lower", "top", "right", "left", "above", "back", "middle", 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 describing the present invention, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present embodiment, if the connection or fixing manner between the components is not specifically described, the connection or fixing manner may be a bolt fixing manner, a pin connecting manner, or the like, which is commonly used in the prior art, and therefore, details thereof are not described in the present embodiment.

A middle-high voltage aluminum electrolytic capacitor is shown in figures 1-2 and comprises a protective outer shell 1, a heat conduction inner shell 2 arranged inside the protective outer shell 1, a capacitor body 3 arranged inside the heat conduction inner shell 2, and a fixing mechanism 4 arranged on the inner wall of the heat conduction inner shell 2 and used for clamping and fixing the capacitor body 3.

Protective housing 1 is provided with a plurality of louvre 11, the interior bottom of heat conduction inner shell 2 is provided with blotter 21, the top of capacitor body 3 is provided with binding post 31, and binding post 31 is supreme down to run through heat conduction inner shell 2 and protective housing 1 in proper order.

Fixing mechanism 4 is including setting up a plurality of expanding spring 41 on the inner wall of heat conduction inner shell 2, the equal fixedly connected with of expanding spring 41 one end with the arc 42 that the outer wall of capacitor body 3 laminated mutually. The arc plates 42 at the same height enclose a circle, and the capacitor body 3 is located in the middle of the circle.

In this embodiment, the protective casing 1 is a plastic protective casing.

In this embodiment, the heat-conducting inner casing 2 is an aluminum alloy heat-conducting inner casing. The aluminum alloy has good heat-conducting property, utilizes the heat-conducting property of the aluminum alloy and the heat dissipation holes 11 on the protective shell 1, can dissipate the heat inside the heat-conducting inner shell 2 to the outside air, and plays a certain heat dissipation effect, thereby reducing the adverse effect of heat dissipation play to the capacitor main body 3 due to the increase of the heat-conducting inner shell 2.

In the present embodiment, the cushion 21 is a rubber cushion.

In the present embodiment, twelve arc-shaped plates 43 are arranged at the same height, and twelve arc-shaped plates 43 enclose a circular shape.

The assembling method comprises the following steps: the telescopic spring 41 and the arc-shaped plate 42 are welded and fixed into a clamping assembly, the clamping assembly is bonded and fixed onto the inner wall of the heat-conducting inner shell 2, the capacitor body 3 is placed inside the heat-conducting inner shell 2 padded with the cushion pad 21, and finally the heat-conducting inner shell 2 filled with the capacitor body 3 is placed inside the protective outer shell 1.

The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.

Claims

1. A medium-high voltage aluminum electrolytic capacitor comprises a protective outer shell, a heat conduction inner shell arranged inside the protective outer shell, a capacitor main body arranged inside the heat conduction inner shell, and a fixing mechanism arranged on the inner wall of the heat conduction inner shell and used for clamping and fixing the capacitor main body; the protecting sheathing is provided with a plurality of louvre, its characterized in that: a buffer cushion is arranged at the inner bottom of the heat-conducting inner shell; the fixing mechanism comprises a plurality of extension springs arranged on the inner wall of the heat-conducting inner shell, and arc plates fixedly connected with one ends of the extension springs and attached to the outer wall of the capacitor main body.

2. The medium-high voltage aluminum electrolytic capacitor according to claim 1, characterized in that: the protective shell is a plastic protective shell.

3. The medium-high voltage aluminum electrolytic capacitor according to claim 1, characterized in that: the heat conduction inner shell is an aluminum alloy heat conduction inner shell.

4. The medium-high voltage aluminum electrolytic capacitor according to claim 1, characterized in that: the buffer cushion is a rubber buffer cushion.

5. The medium-high voltage aluminum electrolytic capacitor according to claim 1, characterized in that: the top of capacitor body is provided with binding post, and binding post runs through heat conduction inner shell and protecting sheathing from lower supreme in proper order.