CN215644144U

CN215644144U - Powder anode ox horn capacitor

Info

Publication number: CN215644144U
Application number: CN202121929472.7U
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: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-01-25
Anticipated expiration: 2031-08-17

Abstract

The utility model discloses a powder anode ox horn capacitor, which comprises an aluminum shell, an anode capacitor cell arranged in the aluminum shell, a packaging cover plate used for packaging the anode capacitor cell in the aluminum shell and a leading-out terminal arranged on the packaging cover plate; the anode capacitor cell is obtained by performing die pressing cold welding forming on high-purity aluminum anode fragment particles; the high-purity aluminum anode scrap particles are obtained by high-temperature purification treatment of aluminum foil powder; the leading-out terminal is bent in a horn shape and comprises a riveting part and an inserting part formed by bending and upwards extending the riveting part. The powder anode ox horn capacitor has the advantages of simple structure and low production cost, and is stably and reliably installed when being installed on a circuit board.

Description

Powder anode ox horn capacitor

Technical Field

The utility model belongs to the technical field of aluminum electrolytic capacitors, and particularly relates to a powder anode ox horn capacitor.

Background

The capacitor has a function of storing electric energy and instantly discharging the electric energy, and is an indispensable electronic component in the fields of electronics and power. The capacitor is widely applied to circuits such as power supply filtering, signal coupling, resonance, direct current isolation and the like, makes a contribution to the rapid development of modern electronic technology that the capacitor cannot be worn out, is also widely applied to electronic equipment such as household electrical appliances and computers, and is an irreplaceable electronic component in the electrical and electronic industries.

In the capacitor, the positive and negative electrode lead terminals of the horn capacitor are generally formed in a horn shape, and thus the capacitor is called a horn capacitor. The ox horn capacitor generally comprises a positive lead-out terminal, a negative lead-out terminal, a cover plate, an anode foil, a cathode foil and electrolytic paper; the capacitor core package is packaged in an aluminum sealing shell, and then is connected with a lead-out terminal through a lead-out electrode for plug-in mounting and use. However, the winding structure of the capacitor core package is complicated and the production cost is high.

The above background disclosure is only for the purpose of assisting understanding of the inventive concept and technical solutions of the present invention, and does not necessarily belong to the prior art of the present patent application, and should not be used for evaluating the novelty and inventive step of the present application in the case that there is no clear evidence that the above content is disclosed at the filing date of the present patent application.

Disclosure of Invention

The utility model aims to provide a powder anode ox horn capacitor to solve at least one of the problems in the background technology.

In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:

a powder anode oxhorn capacitor comprises an aluminum shell, an anode capacitor cell arranged in the aluminum shell, a packaging cover plate used for packaging the anode capacitor cell in the aluminum shell, and an outgoing terminal arranged on the packaging cover plate; the anode capacitor cell is obtained by performing die pressing cold welding forming on high-purity aluminum anode fragment particles; the high-purity aluminum anode scrap particles are obtained by high-temperature purification treatment of aluminum foil powder; the leading-out terminal is bent in a horn shape and comprises a riveting part and an inserting part formed by bending and upwards extending the riveting part.

In some embodiments, the leading-out terminal is integrally formed, the riveting portion is provided with a riveting hole, and the electrode of the capacitor is riveted and fixed with the leading-out terminal through the riveting hole.

In some embodiments, the lead-out terminals are two in number, and the two lead-out terminals are staggered on the package cover plate.

In some embodiments, there are three of the terminals, two of which are riveted to the same electrode and the other terminal is riveted to the other electrode.

In some embodiments, the three terminals enclose an equilateral triangle having a center of gravity coincident with the center of the package cover.

In some embodiments, the lead terminals are four in number, including a positive lead terminal, a negative lead terminal, and an auxiliary terminal; the auxiliary terminals are respectively arranged on two sides of the positive electrode leading-out terminal or the negative electrode leading-out terminal and are positioned on the same arc line with the positive electrode leading-out terminal or the negative electrode leading-out terminal.

In some embodiments, a current collector is embedded inside the capacitor cell.

In some embodiments, the capacitor core package further comprises a cathode, wherein the cathode is obtained by performing an immersion plating process on the capacitor core.

In some embodiments, the negative electrode electronic foil is a carbon foil with ultrahigh specific volume formed after growing carbon whiskers on the surface of a highly corrosive aluminum foil.

In some embodiments, the main body of the package cover plate is circular, the positive and negative lead-out terminals of the capacitor are mounted at the center of the cover plate, and the insertion parts of the positive and negative lead-out terminals are bent toward the center of the package cover plate.

The technical scheme of the utility model has the beneficial effects that:

compared with the prior art, the powder anode ox horn capacitor has the advantages of simple structure, low production cost and stable and reliable installation when being installed on a circuit board.

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 utility model, as claimed.

For a better understanding and practice, the utility model 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 used in the description of the embodiments or the prior art 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a three-dimensional structure of a powder anode ox horn capacitor according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a package cover plate of the powder anode capacitor according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a capacitor cell of a powder anode capacitor according to an embodiment of the utility model;

FIG. 4 is a schematic view of an aluminum case of a powder anode ox horn capacitor according to an embodiment of the present invention;

FIG. 5 is a schematic representation of a three-dimensional structure of a powder anode ox horn capacitor according to another embodiment of the present invention;

fig. 6 is a schematic representation of a three-dimensional structure of a powder anode ox horn capacitor according to another embodiment of the utility model.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer and more obvious, so that those skilled in the art can better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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 an 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 in a particular orientation, and be in any way limiting of 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. In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, "plurality" means two or more, and the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1, as an embodiment of the present invention, a powder anode oxhorn capacitor 1 is provided, which includes an aluminum case 100, an anode capacitor cell 200 installed in the aluminum case 100, a package cover plate 10 for packaging the anode capacitor cell 200 in the aluminum case 100, and an outgoing terminal 11 installed on the package cover plate; the anode capacitor cell 200 is formed by performing die pressing cold welding on high-purity aluminum anode scrap particles; the high-purity aluminum anode scrap particles are obtained by high-temperature purification treatment of aluminum foil powder; the leading-out terminal 11 is bent in a horn shape, and includes a riveting portion 110 and an inserting portion 111 formed by bending and extending the riveting portion 110.

Specifically, the capacitor electric core 200 further includes a cathode, and the cathode is obtained by performing a cathode dip plating process on the anode capacitor electric core 200. The target guide material of the cathode is graphene powder, activated carbon powder, conductive polymer dispersion liquid or conductive aerogel dispersion liquid prepared by the graphene powder, the activated carbon powder and the conductive polymer dispersion liquid, the plurality of dispersion liquids are fully remained among pores of the monomer anode after vacuum impregnation, then baking is carried out to remove the solvent, and the solvent is removed through repeated treatment until the physical capacity of the monomer anode is completely induced and driven (99.99%), so that the cathode filling process is realized. The current collector 201 is embedded in the anode capacitor battery core 200 to lead out the anode of the capacitor, and the purity of the current collector is 99.99-99.995%.

The leading-out terminal 11 is integrally formed, a riveting hole is formed in the riveting portion 110, and an electrode of the capacitor is riveted and fixed with the leading-out terminal through the riveting hole. Referring to fig. 2, the two lead terminals 11 are provided, and the two lead terminals are mounted on the package cover plate 10 in a staggered manner. In other embodiments, the number of the lead terminals 11 is plural, and referring to fig. 5, the lead terminals 11 are three in total, two of the lead terminals are riveted to the same electrode, the other lead terminal is riveted to the other electrode, and all three lead terminals are bent inward. In some embodiments, the three leading-out terminals are configured such that the three leading-out terminals enclose an equilateral triangle, and the center of gravity of the equilateral triangle coincides with the center of the package cover plate, so that when the capacitor is vertically mounted on the circuit board, the capacitor can be stably and firmly fixed on the circuit board through the three leading-out terminals, and the capacitor is prevented from tilting or shaking.

Referring to fig. 6, the lead terminals 11 include four lead terminals, including positive and negative lead terminals and auxiliary terminals; the auxiliary terminals are respectively arranged on two sides of the positive electrode leading-out terminal or the negative electrode leading-out terminal and are positioned on the same arc line with the positive electrode leading-out terminal or the negative electrode leading-out terminal.

In some embodiments, the capacitor 1 further includes a negative electrode electronic foil, where the negative electrode electronic foil is a carbon foil with an ultra-high specific volume formed after growing carbon whiskers on the surface of a highly corrosive aluminum foil, and the specific volume is C500 uF-0.5F.

Specifically, the anode capacitor cell 200 includes high-purity aluminum anode scrap particles, and the high-purity aluminum anode scrap particles include aluminum foil powder obtained by polishing an anode foil, a positive foil and/or a scrap foil of a scrap aluminum electrolytic capacitor. The high-purity aluminum anode fragment particles are obtained by purifying aluminum foil powder at high temperature, removing impurities such as solvent, gel and electrolyte in the aluminum foil powder, and uniformly performing ultrasonic cleaning and dehalogenation and ash removal on the aluminum foil powder by using capacitance-level deionized water.

In some embodiments, the battery cell after the cathode dip coating generation treatment is subjected to a cathode dip treatment again, and the separator/paper and the pores between the negative electrodes are completely filled, so that the capacitor battery cell close to the solid-solidified entity can be obtained.

In some embodiments, the main body of the package cover plate 10 is circular, the positive and negative lead terminals are installed at the center of the cover plate, and the insertion portions are bent toward the center of the package cover plate.

In some embodiments, the package cover plate includes a substrate 101, and a rubber layer 102 respectively disposed on an upper surface of the substrate 101. The rubber layer 102 is applied to the surface of the substrate 101 to seal the capacitor. The thickness of the substrate 101 is greater than the thickness of the rubber layer 102, and in some embodiments, the thickness h of the substrate is: h is more than or equal to 5mm and less than or equal to 8 mm; the material of the substrate is that epoxy resin is compounded with fiber texture density textile or papermaking; in some embodiments, the substrate is made of a low-chlorophenol resin material.

It is to be understood that the foregoing is a more detailed description of the utility model as it relates to specific/preferred embodiments and that no limitation to the specific embodiments is intended as being implied by the limitation presented herein. It will be apparent to those skilled in the art that various substitutions and modifications can be made to the described embodiments without departing from the spirit of the utility model, and these substitutions and modifications should be considered to fall within 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 are intended to 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 utility model.

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 utility model 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. A powder anode oxhorn capacitor is characterized by comprising an aluminum shell, an anode capacitor cell arranged in the aluminum shell, a packaging cover plate used for packaging the anode capacitor cell in the aluminum shell and an outgoing terminal arranged on the packaging cover plate; the anode capacitor cell is obtained by performing die pressing cold welding forming on high-purity aluminum anode fragment particles; the high-purity aluminum anode scrap particles are obtained by high-temperature purification treatment of aluminum foil powder; the leading-out terminal is bent in a horn shape and comprises a riveting part and an inserting part formed by bending and upwards extending the riveting part.

2. The powder anode ox horn capacitor of claim 1, wherein: the lead-out terminal is integrally formed, a riveting hole is formed in the riveting portion, and an electrode of the capacitor is fixedly riveted with the lead-out terminal through the riveting hole.

3. The powder anode ox horn capacitor of claim 2, wherein: the lead-out terminals are two in number and are installed on the packaging cover plate in a staggered mode.

4. The powder anode ox horn capacitor of claim 2, wherein: the number of the leading-out terminals is three, wherein two leading-out terminals are riveted on the same electrode, and the other leading-out terminal is riveted on the other electrode.

5. The powder anode ox horn capacitor of claim 4, wherein: the three leading-out terminals form an equilateral triangle in a surrounding mode, and the gravity center of the equilateral triangle is overlapped with the center of the packaging cover plate.

6. The powder anode ox horn capacitor of claim 2, wherein: the number of the leading-out terminals is four, and the leading-out terminals comprise a positive electrode leading-out terminal, a negative electrode leading-out terminal and an auxiliary terminal; the auxiliary terminals are respectively arranged on two sides of the positive electrode leading-out terminal or the negative electrode leading-out terminal and are positioned on the same arc line with the positive electrode leading-out terminal or the negative electrode leading-out terminal.

7. The powder anode ox horn capacitor of claim 2, wherein: and a current collector is embedded in the capacitor battery core.

8. The powder anode ox horn capacitor of claim 2, wherein: the capacitor core package also comprises a cathode, and the cathode is obtained by performing immersion plating treatment on the capacitor core.

9. The powder anode ox horn capacitor of claim 8, wherein: the cathode electronic foil is a carbon foil with ultrahigh specific volume formed after carbon whiskers grow on the surface of a highly-corroded aluminum foil.

10. The powder anode ox horn capacitor of claim 2, wherein: the main body of the packaging cover plate is circular, the positive and negative leading-out terminals of the capacitor are arranged at the center of the packaging cover plate, and the insertion parts of the positive and negative leading-out terminals are bent towards the center of the packaging cover plate.