CN211879250U

CN211879250U - Explosion-proof quick-connection electrolytic capacitor

Info

Publication number: CN211879250U
Application number: CN202020258769.4U
Authority: CN
Inventors: 王永松; 王先琴
Original assignee: Suzhou Songcon Electronic Technology Co ltd
Current assignee: Suzhou Songcon Electronic Technology Co ltd
Priority date: 2020-03-05
Filing date: 2020-03-05
Publication date: 2020-11-06
Anticipated expiration: 2030-03-05

Abstract

The utility model discloses an explosion-proof formula connects electrolytic capacitor soon, which comprises a housin, be equipped with the core package in the casing, the core package upper end is connected with the electrode, the electrode passes the setting and is in apron on the casing, shells inner wall's top is equipped with rather than integrated into one piece's lock ring, be equipped with on the bottom surface of apron rather than integrated into one piece's a locking section of thick bamboo and a lid section of thick bamboo, the outer periphery of a locking section of thick bamboo with the inner wall of casing offsets and keeps in contact, and be equipped with on it with the lock ring is interference fit's locking groove, the inner circumference of a lid section of thick bamboo with the outer periphery of casing is hug. The beneficial effects of the utility model are mainly embodied in that: compared with the prior art, the structure of the seal between the shell and the cover plate is increased, so that the electrolytic capacitor has stronger sealing performance, the sealing effect of the electrolytic capacitor is improved, and the leakage risk of electrolyte is reduced.

Description

Explosion-proof quick-connection electrolytic capacitor

Technical Field

The utility model relates to an electrolytic capacitor field particularly, especially relates to an explosion-proof formula connects electrolytic capacitor soon.

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 shell of the electrolytic capacitor is the shell of the electrolytic capacitor and has the functions of protecting the core and isolating the capacitor core from the outside. The inner wall of the aluminum shell of the electrolytic capacitor in the prior art has no insulating capacity, so that a larger gap distance is reserved between the periphery of a capacitor core package and the inner wall of the aluminum shell when the electrolytic capacitor is assembled, and the phenomenon that the capacitor core package is inclined to cause the internal expansion of the aluminum shell due to low installation precision is prevented.

Electrolytic capacitor on the market comprises aluminum hull, cover shell, core package, apron to and anodal binding post, negative pole binding post, and the bottom of an aluminum section of thick bamboo is located to the apron, and the edge of tight apron is pressed from both sides after buckling to the bottom edge of an aluminum section of thick bamboo, and the cover shell cover is outside an aluminum section of thick bamboo, and the core package is located an aluminum section of thick bamboo, and anodal binding post, negative pole binding post locate apron department. As is known, the leakage of the electrolyte of the electrolytic capacitor can seriously affect the working performance of the electrolytic capacitor, and if the leakage of the electrolyte is serious, the working performance of the electrolytic capacitor can be seriously affected, so that the electrolytic capacitor cannot normally work and the normal use of the electrolytic capacitor is influenced; and the edge of the cover plate and the clamping part of the aluminum cylinder are a leakage part which is easy to leak electrolyte due to the sealing relation.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide an explosion-proof quick-connection electrolytic capacitor.

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

the utility model provides an explosion-proof formula connects electrolytic capacitor soon, includes the casing, be equipped with the core package in the casing, the core package upper end is connected with the electrode, the electrode passes the setting and is in apron on the casing, shells inner wall's top is equipped with rather than integrated into one piece's lock ring, be equipped with rather than integrated into one piece's a lock section of thick bamboo and a lid section of thick bamboo on the bottom surface of apron, the outer periphery of a lock section of thick bamboo with the inner wall of casing offsets and keeps in contact, and be equipped with on it with the lock ring is interference fit's locking groove, the inner circumference of a lid section of thick bamboo with the outer periphery of.

Preferably, the cross section of the locking ring is in the shape of a right-angle sector, the upper half part of the locking ring is in the shape of a sector, and the bottom of the locking ring is a plane.

Preferably, an adhesive rubber pad is further arranged between the upper end face of the shell and the bottom face of the cover plate, an inner ring of the adhesive rubber pad is tightly attached to the outer circumferential face of the locking cylinder, and an outer ring of the adhesive rubber pad is tightly attached to the inner circumferential face of the cover cylinder.

Preferably, the upper half part and the lower half part of the shell are both 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 adhesive rubber pad is of a ring structure.

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

Preferably, the explosion-proof groove is a plurality of grooves.

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

1. compared with the prior art, the structure of the seal between the shell and the cover plate is increased, so that the electrolytic capacitor has stronger sealing performance, the sealing effect of the electrolytic capacitor is improved, and the leakage risk of electrolyte is reduced.

2. The bonding strength of the shell and the cover plate is relatively weak, and when the internal pressure of the electrolytic capacitor is too high, the cover plate is firstly spread, so that directional pressure relief is realized, and the capacitor is prevented from exploding.

3. The sealing performance that the stickness cushion further strengthened has improved electrolytic capacitor's sealed effect, reduces the weeping risk of electrolyte.

4. The upper half part and the lower half part of the shell are respectively added with a binding groove, so that the core cladding is fixed in the radial direction, and 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 structure of the utility model is shown schematically;

FIG. 2: the top view of the utility model;

FIG. 3: a partial enlarged view of a portion a in fig. 1.

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 fig. 3, the utility model discloses an explosion-proof formula connects electrolytic capacitor soon, including casing 1, be equipped with core package 5 in the casing 1, core package 5 upper end is connected with electrode 51, the electrode passes the setting and is in apron 2 on the casing 1, the electrode is prior art with the structure of core package 5 and apron, does not do too much the repeated description here.

The top of 1 inner wall of casing is equipped with rather than integrated into one piece's lock ring 11, the transversal right angle fan-shaped of personally submitting of lock ring 11, its first half is fan-shaped, and the bottom is the plane, and the bottom is the bonding strength between plane multiplicable lock ring 11 and the apron, improves sealed effect. The bottom surface of the cover plate 2 is provided with a locking cylinder 21 and a cover cylinder 22 which are integrally formed with the cover plate, the outer circumferential surface 211 of the locking cylinder 21 is abutted against and kept in contact with the inner wall of the shell 1, a locking groove 212 which is in interference fit with the locking ring 11 is arranged on the locking cylinder, and the inner circumferential surface 221 of the cover cylinder 22 is tightly attached to the outer circumferential surface of the shell 1. Compared with the prior art, the structure has the advantages that the sealing structure between the shell and the cover plate is increased, the electrolytic capacitor has stronger sealing performance, the sealing effect of the electrolytic capacitor is improved, and the leakage risk of electrolyte is reduced. In addition, the bonding strength of the shell and the cover plate is relatively weak, and when the internal pressure of the electrolytic capacitor is too high, the cover plate is firstly spread, so that directional pressure relief is realized, and the capacitor is prevented from exploding.

In this embodiment, an adhesive rubber pad 3 is further disposed between the upper end surface of the housing 1 and the bottom surface of the cover plate 2, an inner ring of the adhesive rubber pad 3 is tightly attached to the outer circumferential surface 211 of the locking cylinder 21, and an outer ring of the adhesive rubber pad 3 is tightly attached to the inner circumferential surface 221 of the cover cylinder 22. Preferably, the adhesive pad 3 is a ring-shaped structure. The sealing performance that the setting of stickness cushion can further be strengthened has improved electrolytic capacitor's sealed effect, reduces the weeping risk of electrolyte.

The upper half part and the lower half part of the shell 1 are both provided with a circle of binding groove 4, the binding groove 4 is of an inwards concave arc structure, and the top point of the arc surface of the binding groove 4 is always abutted to and kept in contact with the core bag 5. The upper half part and the lower half part of the shell are respectively added with a binding groove, so that the core wrap is fixed in the radial direction, and the anti-seismic performance of the capacitor is improved.

In this embodiment, the bottom inner surface of the housing 1 is provided with an explosion-proof groove. The arrangement of the explosion-proof groove can reduce the thickness of the explosion-proof groove, so that the pressure born by the explosion-proof groove is reduced, when the electrolytic capacitor bursts, high-pressure gas generated by the electrolytic capacitor is directly opened from the weakest position of the explosion-proof groove and then sprayed out, and finally the problem of a series of potential safety hazards caused by irregular bursting is solved.

In addition, the explosion-proof groove is a plurality of, and the explosion-proof groove can be any shape, such as an arc-shaped groove or a groove with a triangular cross section. The first ends of the explosion-proof grooves are connected to the same point, the arrangement can realize that high-pressure gas generated when the capacitor electrolyzer explodes is sprayed out along a specified direction, and the depth of the explosion-proof grooves is preferably 0.05 mm. The first end of each explosion-proof groove is positioned at the center of the bottom of the shell 1. The included angle between two adjacent explosion-proof grooves is the same, and the arrangement of the included angle enables the explosion-proof grooves to be uniformly distributed, so that high-pressure gas generated during explosion of the electrolytic capacitor can be sprayed out from the center of the bottom of the shell more easily.

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. Explosion-proof formula connects electrolytic capacitor soon, including casing (1), be equipped with core package (5) in casing (1), core package (5) upper end is connected with electrode (51), the electrode passes the setting and is in apron (2) on casing (1), its characterized in that: the top end of the inner wall of the shell (1) is provided with a locking ring (11) integrally formed with the inner wall, the bottom surface of the cover plate (2) is provided with a locking cylinder (21) and a cover cylinder (22) integrally formed with the cover plate, the outer circumferential surface (211) of the locking cylinder (21) is abutted to the inner wall of the shell (1) and keeps contact with the inner wall, a locking groove (212) in interference fit with the locking ring (11) is formed in the locking cylinder, and the inner circumferential surface (221) of the cover cylinder (22) is tightly attached to the outer circumferential surface of the shell (1).

2. The explosion-proof quick connect electrolytic capacitor of claim 1 wherein: the cross section of the locking ring (11) is in a right-angle sector shape, the upper half part of the locking ring is in a sector shape, and the bottom of the locking ring is in a plane.

3. The explosion-proof quick connect electrolytic capacitor of claim 1 wherein: an adhesive rubber pad (3) is further arranged between the upper end face of the shell (1) and the bottom face of the cover plate (2), the inner ring of the adhesive rubber pad (3) is tightly attached to the outer circumferential face (211) of the locking cylinder (21), and the outer ring of the adhesive rubber pad (3) is tightly attached to the inner circumferential face (221) of the cover cylinder (22).

4. The explosion-proof quick connect electrolytic capacitor of claim 1 wherein: the core bag is characterized in that a circle of binding groove (4) is formed in the upper half part and the lower half part of the shell (1), the binding groove (4) is of an inwards concave arc structure, and the top point of the arc surface of the binding groove (4) is always abutted to and kept in contact with the core bag (5).

5. An explosion-proof quick connect electrolytic capacitor as set forth in claim 3 wherein: the viscous rubber pad (3) is of an annular structure.

6. An explosion-proof quick connect electrolytic capacitor as set forth in claim 3 wherein: the bottom inner surface of the shell (1) is provided with an explosion-proof groove.

7. The explosion-proof quick connect electrolytic capacitor of claim 6 wherein: the explosion-proof recess is a plurality of.