CN218447574U

CN218447574U - Explosion-proof type aluminum electrolytic capacitor

Info

Publication number: CN218447574U
Application number: CN202222611943.0U
Authority: CN
Inventors: 尹志华; 李良; 尹超
Original assignee: Shenzhen Jianghao Electron Co ltd
Current assignee: Shenzhen Jianghao Electron Co ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-02-03
Anticipated expiration: 2032-09-29

Abstract

The utility model discloses an explosion-proof aluminum electrolytic capacitor, which comprises a shell, a capacitor core package arranged inside the shell, a cover plate for packaging the capacitor core package in the shell, and a wiring terminal assembly arranged on the cover plate; the shell comprises a columnar shell body, wherein a circular boss protruding out of the inner bottom surface of the shell body and a protruding strip connecting the circular boss and the inner wall of the shell body are arranged on the inner bottom surface of the shell body; a cross groove is formed between the circular boss and the inner wall of the shell body, and the height of the circular boss is equal to that of the protruding strip. The circular boss and the protruding strip extrusion that set up through the shell body bottom at the shell encapsulate condenser core package in the shell to encapsulate the core package steadily and fix in the shell, and, through the cross recess that sets up on the inside bottom surface of shell body, make and have certain airflow channel between condenser core package and the inside bottom surface of shell body, thereby improve aluminium electrolytic capacitor's antidetonation explosion-proof performance.

Description

Explosion-proof type aluminum electrolytic capacitor

Technical Field

The utility model belongs to the technical field of the condenser, especially, relate to an explosion-proof type aluminium electrolytic capacitor.

Background

With the development of new energy automobiles, energy storage products are rapidly developed; at present, all energy storage devices are packaged and protected by a shell made of special materials. Such as: the aluminum electrolytic capacitor is generally packaged by combining a shell, a cover plate with an electrode terminal and a buffer rubber pad with good air tightness. For example, chinese patent publication No. 200820216600.1 discloses an aluminum electrolytic capacitor, in which a case is circular, and a circular cover plate is mounted in an opening of a circular aluminum case and then pressed inward by a circular edge of the aluminum case to cover the cover plate.

Due to the use environment of the new energy automobile, safety requirements such as stability, shock resistance and explosion-proof requirements are very high, and therefore, the new energy automobile has extremely high requirements on an aluminum electrolytic capacitor applied to the new energy automobile. For example, the aluminum electrolytic capacitor disclosed in chinese patent No. 200820216600.1 has a relatively simple case, and the aluminum electrolytic capacitor obtained by simply packaging the case has poor shock absorption, and is difficult to be applied to the application fields of new energy vehicles and the like, which have high requirements for shock absorption.

Therefore, in order to solve the problems in the prior art, research and development are needed to provide a housing of an aluminum electrolytic capacitor applicable to the field of new energy vehicles, so as to improve the shock absorption and explosion-proof performance of the housing.

The above background disclosure is only provided as an aid to understanding the inventive concepts and technical solutions of the present invention, and it does not necessarily belong to the prior art of this patent application, and it should not be used to evaluate the novelty and inventive step of this application in the case that there is no clear evidence that the above contents are disclosed at the filing date of this patent application.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an explosion-proof type aluminium electrolytic capacitor to solve at least one kind among the above-mentioned background art problem.

In order to achieve the above object, the embodiment of the present invention provides a technical solution that:

an explosion-proof aluminum electrolytic capacitor comprises a shell, a capacitor core package arranged in the shell, a cover plate for packaging the capacitor core package in the shell, and a wiring terminal assembly arranged on the cover plate; the shell comprises a columnar shell body, wherein a circular boss protruding out of the inner bottom surface of the shell body and a protruding strip connecting the circular boss and the inner wall of the shell body are arranged on the inner bottom surface of the shell body; a cross groove is formed between the circular boss and the inner wall of the shell body, and the height of the circular boss is equal to that of the protruding strip.

In some embodiments, the number of the protrusions is three, and the three protrusions divide the bottom surface of the shell body into three sectors; each sector is provided with a cross groove.

In some embodiments, the circular boss is disposed at a central position of the bottom surface of the housing body.

In some embodiments, the longitudinal cross-section of the bead is substantially trapezoidal in shape.

In some embodiments, a displacement is provided between the cross slot and the adjacent protrusion.

In some embodiments, a displacement is provided between the cross slot and the circular boss and between the cross slot and the inner wall of the housing body.

In some embodiments, an annular inclined plane is arranged at the junction of the bottom surface of the shell body and the inner wall of the shell body.

The utility model discloses technical scheme's beneficial effect is:

compared with the prior art, the utility model discloses explosion-proof type aluminium electrolytic capacitor encapsulates condenser core package in the shell through circular boss and the protruding strip extrusion that sets up in the shell body bottom of shell to can encapsulate the core package steadily and fix in the shell, and, through the cross recess that sets up on the inside bottom surface of shell body, make to have certain air flow channel between condenser core package and the inside bottom surface of shell body, thereby with the antidetonation explosion-proof capability who improves aluminium electrolytic capacitor.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.

For a better understanding and an implementation, the present invention is described in detail below with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic view showing a three-dimensional structure of an explosion-proof type aluminum electrolytic capacitor according to an embodiment of the present invention;

FIG. 2 is a schematic view of an explosion-proof aluminum electrolytic capacitor according to an embodiment of the present invention;

FIG. 3 is a perspective view of an outer case of an explosion-proof type aluminum electrolytic capacitor according to an embodiment of the present invention;

fig. 4 is a schematic sectional view of the case of the explosion-proof aluminum electrolytic capacitor according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the embodiments of the present invention more clearly understood, the technical solutions in the embodiments of the present invention can be better understood by those skilled in the art, and the drawings in the embodiments of the present invention will be combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element. The connection may be for fixation or for circuit connection.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the embodiments of the present invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the 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. In the description of the embodiments of the present invention, unless explicitly stated or limited otherwise, "plurality" means two or more, and the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as meaning a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to 4, as another embodiment of the present invention, an explosion-proof aluminum electrolytic capacitor 200 is provided, which includes a housing 100, a capacitor core package (not shown) installed inside the housing 100, a cover plate 300 enclosing the capacitor core package in the housing 100, and a terminal assembly 400 installed on the cover plate 300; the wiring terminal assembly comprises an extraction terminal and an electrode electrically connected with the extraction terminal; the shell comprises a columnar shell body, wherein a circular boss 10 protruding out of the bottom surface of the interior of the shell and a protruding strip 12 connecting the circular boss 10 with the inner wall 101 of the shell body are arranged on the bottom surface of the interior of the shell body; a cross groove 13 is arranged between the circular boss 10 and the inner wall 101 of the shell body, and the height of the circular boss 10 is equal to that of the protruding strip 12.

In some embodiments, the circular boss 10 is disposed at a central position of the bottom surface of the housing body, and the three protrusions 12 are three in total, and the three protrusions 12 divide the bottom surface of the housing body into three sectors 110; each sector 110 is provided with a respective cross recess 13.

Referring to fig. 4, in some embodiments, the longitudinal cross-section 120 of the bar 12 is generally trapezoidal in shape. It should be noted that, in some other embodiments, the number of the protruding strips 12 may be an even number or an odd number, and the embodiment of the present invention is not limited thereto, and no matter how many, as long as the gist of the present invention is not departed, the present invention should belong to the protection scope of the present invention.

In some embodiments, a displacement is provided between the cross slot 13 and the adjacent protrusion 12; in some embodiments, a displacement is provided between the cross slot 13 and the circular boss 10 and the inner wall 101 of the housing body. In some embodiments, an annular bevel 102 is provided at the intersection of the bottom surface of the housing body and the inner wall 101 of the housing body.

The embodiment of the utility model has the advantages that the round boss 10 and the protruding strip 12 arranged at the bottom of the shell body of the shell extrude and package the core cladding of the capacitor in the shell, so that the core cladding can be stably packaged and fixed in the shell, and the anti-seismic performance of the aluminum electrolytic capacitor is improved; in addition, through the cross groove 13 arranged on the bottom surface inside the shell body, a certain airflow channel is formed between the core package of the capacitor and the bottom surface inside the shell body, so that the explosion-proof performance of the aluminum electrolytic capacitor can be improved.

In some embodiments, the lead terminals include positive and negative lead terminals, and the positive and negative lead terminals are connected to the circuit board when the electrolytic capacitor is mounted on the circuit board.

In some embodiments, the capacitor core package comprises a core package main body formed by laminating and coaxially winding an electrolyte paper layer and an aluminum foil, and a cathode guide foil leading-out strip and an anode guide foil leading-out strip are arranged at the top of the core package main body; the aluminum foil layer comprises a negative aluminum foil layer and a positive aluminum foil layer, wherein the negative lead foil leading strip is led out of the negative aluminum foil layer; and the anode guide foil leading-out strip is led out of the anode aluminum foil layer. The electrolytic paper layer is arranged between the negative electrode aluminum foil layer and the positive electrode aluminum foil layer.

During the application, place the condenser core package in the shell, carry out beam waist to the shell to it is fixed with the condenser core package, then install the upper cover plate and encapsulate, tightly buckle the apron upper surface after carrying out the turn-up with the opening edge of shell, thereby be fixed in inside the aluminum electrolytic capacitor shell with the encapsulation of condenser core package.

The material of the shell of the utility model depends on the internal electrochemical environment of the packaged aluminum electrolytic capacitor and can be made of any nonferrous metal or alloy material thereof, wherein the nonferrous metal which can bear the chemical reaction of the electrolyte can be changed according to the electrolyte property of the aluminum electrolytic capacitor; such as stainless steel, high purity aluminum, alloy materials, and the like. It should be noted that the utility model discloses the shell still can be applied to the encapsulation that has the electric function electronic product of accumulate, if: liquid batteries, supercapacitors, aluminum electrolytic capacitors, or other new forms of energy storage devices that store electrical energy. After the energy storage product is packaged with the metal shell in a matched manner, the shock resistance and the explosion-proof function of the energy storage product can be greatly improved, and the safety of the product is improved.

It is to be understood that the foregoing is a more detailed description of the invention, and specific embodiments thereof are described in conjunction with the detailed description, which is not intended to limit the invention to the particular forms disclosed. For those skilled in the art to which the invention pertains, several alternatives or modifications can be made to the described embodiments without departing from the inventive concept, and these alternatives or modifications should be construed as belonging to the scope of the present patent. In the description herein, references to the description of the term "one embodiment," "some embodiments," "preferred embodiments," "an example," "a specific example," or "some examples" or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention.

In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of the invention as defined by the appended claims.

Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. One of ordinary skill in the art will readily appreciate that the above-disclosed, presently existing or later to be developed, processes, machines, manufacture, compositions of matter, means, methods, or steps, that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or steps.

Claims

1. An explosion-proof type aluminum electrolytic capacitor, characterized in that: the capacitor core package structure comprises a shell, a capacitor core package arranged in the shell, a cover plate for packaging the capacitor core package in the shell and a wiring terminal assembly arranged on the cover plate; the shell comprises a columnar shell body, wherein a circular boss protruding out of the inner bottom surface of the shell body and a protruding strip connecting the circular boss and the inner wall of the shell body are arranged on the inner bottom surface of the shell body; a cross groove is formed between the circular boss and the inner wall of the shell body, and the height of the circular boss is equal to that of the protruding strip.

2. The explosion-proof type aluminum electrolytic capacitor as recited in claim 1, wherein: the bottom surface of the shell body is divided into three fan-shaped areas by the three convex strips; each sector is provided with a cross groove.

3. An explosion-proof type aluminum electrolytic capacitor as recited in claim 2, wherein: the circular boss is arranged at the center of the bottom surface of the shell body.

4. The explosion-proof type aluminum electrolytic capacitor as recited in claim 3, wherein: the longitudinal section of the protruding strip is approximately trapezoidal.

5. The explosion-proof type aluminum electrolytic capacitor as recited in claim 4, wherein: a section of displacement is arranged between the cross groove and the adjacent protruding strip.

6. The explosion-proof type aluminum electrolytic capacitor as recited in claim 4, wherein: and a section of displacement is arranged between the cross groove and the circular boss as well as between the cross groove and the inner wall of the shell body.

7. The explosion-proof type aluminum electrolytic capacitor as recited in claim 6, wherein: and an annular inclined plane is arranged at the joint of the bottom surface of the shell body and the inner wall of the shell body.