CN213877844U

CN213877844U - High-temperature-resistant shockproof electrolytic capacitor

Info

Publication number: CN213877844U
Application number: CN202022677643.3U
Authority: CN
Inventors: 王永松
Original assignee: Suzhou Songcon Electronic Technology Co ltd
Current assignee: Suzhou Songcon Electronic Technology Co ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-08-03
Anticipated expiration: 2030-11-18

Abstract

The utility model discloses a high temperature resistant shockproof electrolytic capacitor, which comprises a shell and a cover plate arranged on the shell, wherein a core cladding is arranged in the shell, the core cladding comprises a first electrolytic paper layer, a negative electrode foil leading strip, a second electrolytic paper layer and a positive electrode foil leading strip which are sequentially closely arranged, and the negative electrode foil leading strip and the positive electrode foil leading strip are respectively connected with a negative electrode connecting terminal and a positive electrode connecting terminal which are arranged on the cover plate; the height of the anode foil guiding strip is greater than that of the cathode foil guiding strip, and at least part of the anode foil guiding strip is always abutted to the shell. The beneficial effects of the utility model are mainly embodied in that: foil strip is drawn to the negative pole and casing butt can dispel the heat through the casing, makes the radiating effect of condenser better to the life of condenser has been prolonged, simultaneously, utilizes the insulator to hug closely in anodal foil strip and anodal binding post's junction, draws the heat rapid diffusion of foil strip and anodal binding post junction with the positive pole, can reduce by this the bad influence that the department generates heat and causes, improves the stability of this condenser.

Description

High-temperature-resistant shockproof electrolytic capacitor

Technical Field

The utility model relates to the technical field of capacitors, particularly, especially, relate to a high temperature resistant electrolytic capacitor that takes precautions against earthquakes.

Background

The electrolytic capacitor is an irreplaceable basic element in various electronic products and is widely applied to the fields of electric automobiles, industrial energy-saving products, photovoltaic inverters and the like. In the recent years, the rapid development of electronic component integration and high-speed processing technology makes the global market put higher demands on the performance of the capacitor products. The development trend of electrolytic capacitors is long service life, high temperature resistance and high-frequency ripple current resistance.

The aluminum electrolytic capacitor comprises an aluminum shell, an element and a pin, wherein the element is packaged in a cavity of the aluminum shell, and the pin is connected with the element and led to the outside. The element comprises a positive aluminum foil, a negative aluminum foil and electrolytic paper positioned between the positive aluminum foil and the negative aluminum foil, and the conventional electrolytic paper is generally thin and single-layer. Because the positive electrode guide connecting piece is connected with the positive electrode aluminum foil through cold welding, electrochemical reaction can occur at the connecting part and generate a large amount of heat during electrifying, the heat is difficult to be quickly dissipated, the temperatures of different parts of the product are inconsistent, the stability of the product can be influenced, and the service life of the product is further shortened. Therefore, there is a need to improve the above-mentioned disadvantages.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a high-temperature-resistant shockproof electrolytic capacitor.

The purpose of the utility model is realized through the following technical scheme:

a high-temperature-resistant shockproof electrolytic capacitor comprises a shell and a cover plate arranged on the shell, wherein a core cladding is arranged in the shell and comprises a first electrolytic paper layer, a negative electrode foil leading strip, a second electrolytic paper layer and a positive electrode foil leading strip which are arranged in a close-fitting manner in sequence, and the negative electrode foil leading strip and the positive electrode foil leading strip are respectively connected with a negative electrode wiring terminal and a positive electrode wiring terminal which are arranged on the cover plate; the height of the positive electrode foil guiding strip is larger than that of the negative electrode foil guiding strip, and at least part of the positive electrode foil guiding strip is always abutted to the shell.

Preferably, an insulator is fixedly arranged on the lower surface of the cover plate, is positioned between the first electrolytic paper layer and the positive electrode foil leading strip, and is tightly attached to the joint of the positive electrode foil leading strip and the positive electrode wiring terminal.

Preferably, the upper end and the lower end of the negative electrode foil guiding strip are both positioned in the first electrolyte paper layer and the second electrolyte paper layer.

Preferably, the shell is an aluminum product.

Preferably, the middle part of the shell is provided with a circle of binding groove, the binding groove is of an inwards concave arc structure, and the top point of the arc surface of the binding groove is always abutted against and kept in contact with the core bag.

Preferably, the inner surface of the bottom of the shell is provided with an explosion-proof groove.

The beneficial effects of the utility model are mainly embodied in that:

1. the negative electrode foil guiding strip is abutted with the shell, so that heat can be dissipated through the shell, the heat dissipation effect of the capacitor is better, and the service life of the capacitor is prolonged;

2. the insulator is tightly attached to the joint of the positive foil guiding strip and the positive connecting terminal, so that heat at the joint of the positive foil guiding strip and the positive connecting terminal is quickly diffused, adverse effects caused by heating at the joint can be reduced, and the stability of the capacitor is improved;

3. and a binding groove is additionally arranged in the middle of the shell to fix the core cladding in the radial direction, so that the anti-seismic performance of the capacitor is improved.

Drawings

The technical scheme of the utility model is further explained by combining the attached drawings as follows:

FIG. 1: the cross-sectional view of the preferred embodiment of the present invention;

FIG. 2: the utility model discloses the structure sketch map of core package in the preferred embodiment.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not limited to the present invention, and structural, method, or functional changes made by those skilled in the art according to these embodiments are all included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. 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," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 2, the utility model discloses a high temperature resistant shockproof electrolytic capacitor, be in including casing 1 and setting apron 3 on the casing 1, be equipped with a core package 2 in the casing 1, foil strip 22 is drawn to the first electrolytic paper layer 21, negative pole, second electrolytic paper layer 23 and the positive pole of hugging closely the setting in proper order to core package 2 draws foil strip 24, negative pole draws foil strip 22 and positive pole to draw foil strip 24 respectively with set up negative pole binding post 31 and the positive pole binding post 32 on the apron 3 are connected. The above structure is the structure of the electrolytic capacitor in the prior art, and therefore, too much description is not repeated.

The design points of the utility model lie in: the height of the anode foil guiding strip 24 is greater than that of the cathode foil guiding strip 22, the upper end and the lower end of the cathode foil guiding strip 22 are both located inside the first electrolyte paper layer 21 and the second electrolyte paper layer 23, and at least part of the cathode foil guiding strip is always abutted to the shell 1. In the foregoing, the foil strip is drawn to the negative pole and the casing butt can dispel the heat through the casing, makes the radiating effect of condenser better to the life of condenser has been prolonged. Furthermore, the shell 1 is made of aluminum, so that the heat dissipation efficiency can be further improved.

An insulator 33 is fixedly arranged on the lower surface of the cover plate 3, and the insulator 33 is positioned between the first electrolyte paper layer 21 and the positive electrode foil leading strip 24 and is tightly attached to the joint of the positive electrode foil leading strip 24 and the positive electrode wiring terminal 32. The insulator is tightly attached to the joint of the positive foil guiding strip and the positive wiring terminal, so that heat at the joint of the positive foil guiding strip and the positive wiring terminal is quickly diffused, adverse effects caused by heating at the joint can be reduced, and the stability of the capacitor is improved.

The utility model discloses in, be equipped with round constraint groove 5 on the middle part of casing 1, constraint groove 5 is indent formula arc structure, just the cambered surface apex in constraint groove 5 with core package 2 offsets all the time and keeps the contact. And a binding groove is additionally arranged in the middle of the shell to fix the core cladding in the radial direction, so that the anti-seismic performance of the capacitor is improved. In addition, the bottom internal surface of casing 1 is equipped with explosion-proof recess to realize directional pressure release, reduce the loss.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. High temperature resistant electrolytic capacitor that takes precautions against earthquakes, including casing (1) and setting be in apron (3) on casing (1), be equipped with a core package (2), its characterized in that in casing (1): the core bag (2) comprises a first electrolytic paper layer (21), a negative electrode foil leading strip (22), a second electrolytic paper layer (23) and a positive electrode foil leading strip (24) which are arranged in a close-fitting manner in sequence, wherein the negative electrode foil leading strip (22) and the positive electrode foil leading strip (24) are respectively connected with a negative electrode wiring terminal (31) and a positive electrode wiring terminal (32) which are arranged on the cover plate (3); the height of the positive electrode foil guiding strip (24) is larger than that of the negative electrode foil guiding strip (22), and at least part of the positive electrode foil guiding strip is always abutted to the shell (1).

2. The high temperature and shock resistant electrolytic capacitor as recited in claim 1, wherein: an insulator (33) is fixedly arranged on the lower surface of the cover plate (3), and the insulator (33) is located between the first electrolyte paper layer (21) and the positive electrode foil leading strip (24) and is tightly attached to the joint of the positive electrode foil leading strip (24) and the positive electrode wiring terminal (32).

3. The high temperature and shock resistant electrolytic capacitor as recited in claim 2, wherein: the upper end and the lower end of the negative electrode foil guiding strip (22) are both positioned inside the first electrolytic paper layer (21) and the second electrolytic paper layer (23).

4. The high temperature and shock resistant electrolytic capacitor as recited in claim 3, wherein: the shell (1) is an aluminum product.

5. The high temperature and shock resistant electrolytic capacitor as recited in claim 4, wherein: the middle part of the shell (1) is provided with a circle of binding groove (5), the binding groove (5) is of an inwards concave arc-shaped structure, and the top point of the arc surface of the binding groove (5) is always abutted to and kept in contact with the core bag (2).

6. The high temperature and shock resistant electrolytic capacitor as recited in claim 5, wherein: the bottom inner surface of the shell (1) is provided with an explosion-proof groove.