Double-sided electrolytic capacitor cover plate

Abstract

The utility model discloses a double-sided electrolytic capacitor cover plate, which comprises a cover plate main body and a terminal assembly arranged on the cover plate main body, an anti-explosion structure is arranged on the surface, protruding out of the cover plate body, of one face of the cover plate body, and the other face of the cover plate body is of a groove-shaped structure with the periphery closed; the terminal assembly comprises a leading-out metal guide pin, the leading-out metal guide pin of the terminal assembly and the explosion-proof structure are located on the same face of the cover plate body, or the leading-out metal guide pin of the terminal assembly and the groove-shaped structure are located on the same face of the cover plate body. The front surface and the back surface of the double-sided electrolytic capacitor cover plate can be interchanged, so that the application scene of the capacitor cover plate is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of capacitors, and in particular relates to a double-sided electrolytic capacitor cover. Background Art

[0002] With the continuous improvement of capacitor performance, aluminum electrolytic capacitors have been widely used in consumer electronics, communication products, computers and peripheral products, new energy, automation control, automotive industry, optoelectronic products, high-speed railways, aviation and military equipment, etc. In the field of consumer electronics technology, the application of aluminum electrolytic capacitors has been expanded in many emerging fields such as energy-saving lamps, inverters, new energy, etc. with the structural transformation and technological progress. It has the characteristics of small size, large storage capacity and high cost performance. The application range is getting wider and wider.

[0003] At present, aluminum electrolytic capacitors are generally composed of a core package consisting of positive and negative aluminum foils and electrolytic paper, a cylindrical aluminum shell, and a sealing cover with positive and negative terminal terminals. The cover is provided with positive and negative terminal lead-out holes, and the positive and negative terminals are installed on the cover through through holes.

[0004] Among them, the covers of most aluminum electrolytic capacitors are generally divided into front and back. The front side is the side that contacts the outside and leads to the positive and negative terminals. The back side is the side close to the capacitor core package. After the capacitor is packaged, the back side faces the inside of the capacitor and is not exposed. However, with the complexity and diversity of application scenarios, the requirements for electrolytic capacitors are becoming more and more stringent. Covers that strictly distinguish between the front and back sides are difficult to meet the needs in some scenarios.

[0005] It can be seen that, with respect to the above-mentioned current prior art, it is necessary to conduct research and development to provide a solution, namely, a double-sided electrolytic capacitor cover.

[0006] The disclosure of the above background technology content is only used to assist in understanding the inventive concept and technical solution of the utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Utility Model Content

[0007] The utility model aims to provide a double-sided electrolytic capacitor cover plate to solve at least one of the above-mentioned background technical problems.

[0008] To achieve the above purpose, the technical solution of the embodiment of the utility model is implemented as follows:

[0009] A double-sided electrolytic capacitor cover comprises a cover body and a terminal assembly arranged on the cover body; one side of the cover body protruding from the surface of the cover body is provided with an explosion-proof structure, and the other side is provided with a groove-shaped structure closed on all sides; the terminal assembly comprises a lead-out metal guide pin, wherein the lead-out metal guide pin of the terminal assembly and the explosion-proof structure are located on the same side of the cover body, or the lead-out metal guide pin of the terminal assembly and the groove-shaped structure are located on the same side of the cover body.

[0010] In some embodiments, terminal assembly mounting holes are respectively provided on the cover body near both ends; the explosion-proof structure is provided between two adjacent terminal assembly mounting holes; and the groove-shaped structure forms a depression at a position corresponding to the explosion-proof structure.

[0011] In some embodiments, the height of the explosion-proof structure protruding from the surface of the cover body is less than the depth of the groove of the groove structure on the other side of the cover body.

[0012] In some embodiments, the explosion-proof structure is in the shape of an annular protrusion, and an annular groove is provided at the top of the explosion-proof structure protruding from the surface of the cover body.

[0013] In some embodiments, a narrow groove is provided on the bottom surface of the depression of the groove-shaped structure.

[0014] In some embodiments, the depression is in the shape of an elongated strip, and the surface of the depression is provided with a smooth arc; the narrow groove is provided with a rectangular strip groove, and the bottom surface of the narrow groove is a plane.

[0015] In some embodiments, the terminal assembly further includes an insulating rubber seat and a metal sleeve; the insulating rubber seat is disposed between the lead-out metal guide pin and the metal sleeve.

[0016] In some embodiments, the insulating rubber seat is disposed between the lead-out metal guide pin and the metal sleeve, and the metal sleeve is laser welded to the terminal assembly mounting hole, thereby mounting and fixing the terminal assembly on the cover plate body.

[0017] In some embodiments, the opening edge of the groove of the groove-shaped structure is arranged in an arc shape to form an arc-shaped opening inclined inwardly; and an arc-shaped transition is arranged at the junction of the bottom surface of the groove and the surrounding side surfaces.

[0018] In some embodiments, the groove of the groove-shaped structure is a narrow rectangle; the cover body is a rectangle, and the connection between each two adjacent surfaces of the outer surface of the cover body is arranged in an arc shape.

[0019] The beneficial effects of the technical solution of the utility model are:

[0020] Compared with the prior art, the front and back sides of the double-sided electrolytic capacitor cover of the utility model can be interchanged, thereby greatly improving the application scenarios of the capacitor cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a three-dimensional structural diagram of a double-sided electrolytic capacitor cover plate according to an embodiment of the utility model;

[0023] Figure 2 It is a schematic diagram of a cover plate body of a double-sided electrolytic capacitor cover plate according to an embodiment of the utility model;

[0024] Figure 3 It is a schematic cross-sectional view of a cover plate body of a double-sided electrolytic capacitor cover plate according to an embodiment of the utility model;

[0025] Figure 4 It is an exploded schematic diagram of a terminal assembly of a double-sided electrolytic capacitor cover plate according to an embodiment of the utility model;

[0026] Figure 5 It is a schematic diagram of a double-sided electrolytic capacitor cover plate of another embodiment of the utility model;

[0027] Figure 6 yes Figure 5 A cutaway view of a double-sided electrolytic capacitor cover plate of an embodiment. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the embodiments of the utility model clearer and more understandable, and to enable people in the technical field to better understand the solutions of the utility model, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0029] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for fixing or for circuit connection.

[0030] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, unless otherwise clearly specified and defined, the meaning of "multiple" is two or more, and the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0032] Reference Figure 1 As shown, as an embodiment of the utility model, a double-sided electrolytic capacitor cover 300 is provided. Figure 1-6 As shown, the double-sided electrolytic capacitor cover 300 of the utility model includes a cover body 30 and a terminal assembly 400 arranged on the cover body 30; wherein, one side of the cover body 30 protruding from the surface of the cover body 30 is provided with an explosion-proof structure 311, and the other side is provided with a groove-shaped structure closed on all sides; terminal assembly mounting holes 310 are respectively provided on the cover body 30 near both ends; the explosion-proof structure 311 is provided between two adjacent terminal assembly mounting holes 310; and a recess 312 is formed in the groove-shaped structure corresponding to the position of the explosion-proof structure 311.

[0033] The height of the explosion-proof structure 311 protruding from the surface of the cover body is less than the depth of the groove 31 of the groove structure on the other side of the cover body 30; in some embodiments, the explosion-proof structure 311 is in the shape of an annular protrusion, and an annular groove 313 is provided at the top of the explosion-proof structure 311 protruding from the surface of the cover body; in some embodiments, the explosion-proof structure 311 may also be square or other irregular shapes.

[0034] Reference Figure 2-Figure 3 As shown, in some embodiments, a narrow groove 314 is provided on the bottom surface of the recess 312 of the groove-shaped structure; in some embodiments, the recess 312 is in the shape of an elongated strip, and a smooth arc is provided on the surface of the recess 312, thereby forming a gradual expansion from the bottom surface of the recess to the recess opening; the narrow groove 314 is provided as a rectangular strip groove, and the bottom surface of the narrow groove 314 is a plane.

[0035] It should be noted that, in some other embodiments, the recess 312 and / or the narrow groove 314 may also be set to other shapes. No matter what shape is adopted, as long as it does not deviate from the main purpose of the invention, it should belong to the protection scope of the present utility model.

[0036] Reference Figure 1 , Figure 4-Figure 6 As shown, the terminal assembly 400 includes a lead-out metal guide pin 40, an insulating rubber seat 41, and a metal sleeve 42; the terminal assembly is mounted on the cover body; wherein the lead-out metal guide pin 40 of the terminal assembly and the explosion-proof structure 311 are located on the same surface of the cover body 30, or the lead-out metal guide pin 40 of the terminal assembly 400 and the groove structure are located on the same surface of the cover body 30. The insulating rubber seat 41 is disposed between the lead-out metal guide pin 40 and the metal sleeve 42, and the metal sleeve 42 is laser welded to the terminal assembly mounting hole 310, so that the terminal assembly 400 is mounted and fixed on the cover body 30.

[0037] Reference Figure 3 , Figure 5 As shown, the opening edge of the groove 31 of the groove structure is set to be arc-shaped, forming an arc-shaped opening inclined inward; the bottom surface of the groove 31 is set to be connected with the surrounding side surfaces in an arc-shaped transition. In the embodiment of the utility model, the groove 31 of the groove structure is a narrow rectangle. In some embodiments, the cover body 30 is a rectangle, and the connection between each adjacent two surfaces of the outer surface of the cover body 30 is set to be arc-shaped.

[0038] In some embodiments, the depth of the groove 31 is less than the height of the metal sleeve 42 of the terminal assembly 400; the outer diameter of the metal sleeve 42 is compatible with the terminal assembly mounting hole 310; the insulating rubber seat 41 of the terminal assembly 400 includes a cylindrical sleeve 410 and a circular base plate 411, and the outer diameter of the circular base plate 411 is greater than the aperture of the terminal assembly mounting hole 310.

[0039] In some embodiments, there are two terminal assembly mounting holes 310 for mounting positive and negative terminal assemblies. The two terminal assembly mounting holes 310 are symmetrically or asymmetrically arranged on the cover plate body 30. The explosion-proof structure 311 is arranged between the two terminal assembly mounting holes 310. In some embodiments, the center line of the explosion-proof groove 312 coincides with the center line connecting the two terminal assembly mounting holes 310.

[0040] Reference Figure 4 , Figure 6 As shown, the insulating rubber seat 41 of the terminal assembly is arranged between the lead-out metal guide pin 40 and the metal sleeve 42 to insulate the lead-out metal guide pin 40 from the metal sleeve 42; the lead-out metal guide pin 40 includes a CP lead wire 401, an aluminum stem 402 and a welding base 403.

[0041] In an embodiment of the utility model, the CP lead 401 and the aluminum stem 402 of the lead-out metal guide pin are in the shape of circular strips, wherein the diameter of the aluminum stem 402 is greater than the diameter of the CP lead 401, and the length of the CP lead 401 is greater than the length of the aluminum stem 402; the welding base 403 is in the shape of a disc and is welded to the battery cell of the aluminum electrolytic container through the welding base.

[0042] The insulating rubber seat 41 includes a cylindrical sleeve 410 and a circular bottom plate 411. A through hole 412 is provided at the center of the insulating rubber seat 41 to match the aluminum stem 402 for leading out the metal guide pin. The outer diameter of the aluminum stem 402 matches the inner diameter of the through hole 412, so that the aluminum stem 402 can be tightly sleeved inside the through hole 412. In some embodiments, the length of the through hole 412 is greater than the length of the aluminum stem 402. In some embodiments, the diameter of the cylindrical sleeve 410 is smaller than the diameter of the circular bottom plate 411. The circular bottom plate 411 of the insulating rubber seat 41 abuts against the welding base 403 for leading out the metal guide pin 40.

[0043] The metal sleeve 42 is arranged on the surface of the cylindrical sleeve 410 of the insulating rubber seat 41. Corresponding to the cylindrical sleeve 410, the metal sleeve 42 is cylindrical, the inner diameter of the metal sleeve 42 is matched with the outer diameter of the cylindrical sleeve 410, the length of the metal sleeve 42 is greater than the length of the cylindrical sleeve 410, and the metal sleeve 42 is sleeved on the surface of the cylindrical sleeve 410 and then waisted. One end of the metal sleeve 42 is low-connected to the circular bottom plate 411 of the insulating rubber seat 41, and the other end is buckled with the cylindrical sleeve 410 of the insulating rubber seat 41 by crimping. In some implementations, the metal sleeve 42 is an aluminum tube.

[0044] In some embodiments, a welding base 403 for leading out the metal guide pin 40 is provided with a circular protrusion 404 on the upper surface, and an annular groove 405 is formed between the circular protrusion 404 and the bottom of the aluminum stem; such a design allows the metal sleeve 42 to squeeze the insulating rubber seat 41 when the waist is tightened, and the circular bottom plate 411 of the insulating rubber seat 41 is partially squeezed and embedded in the annular groove 405, and at the same time, the circular protrusion 404 is squeezed and embedded in the circular bottom plate 411 of the insulating rubber seat 41, so that the insulating rubber seat 41 and the leading out metal guide pin 40 are tightly combined together.

[0045] It is understandable that, in some embodiments, the lead-out metal guide needle 40 may also be a strip of other irregular shapes, which is not particularly limited in this embodiment. No matter what shape it is, as long as it does not deviate from the main purpose of this application, it should fall within the protection scope of this application.

[0046] It is understandable that the above content is a further detailed description of the invention of the utility model in combination with specific / preferred implementation methods, and it cannot be determined that the specific implementation of the invention of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the invention of the utility model belongs, without departing from the concept of the invention of the utility model, they can also make several substitutions or modifications to these described implementation methods, and these substitutions or modifications should be deemed to belong to the scope of protection of this patent. In the description of this specification, the description of reference terms such as "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model.

[0047] In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradicting each other. Although the embodiments and advantages of the utility model have been described in detail, it should be understood that various changes, substitutions and modifications may be made herein without departing from the scope defined by the appended claims.

[0048] In addition, the scope of the invention is not intended to be limited to the specific embodiments of the processes, machines, manufactures, material compositions, means, methods, and steps described in the specification. It will be readily understood by those skilled in the art that the above disclosures, processes, machines, manufactures, material compositions, means, methods, or steps currently existing or to be developed later that perform substantially the same functions as the corresponding embodiments described herein or obtain substantially the same results as the embodiments described herein may be utilized. Therefore, the appended claims are intended to include these processes, machines, manufactures, material compositions, means, methods, or steps within their scope.

Claims

1. A double-sided electrolytic capacitor cover, characterized in that: It includes a cover plate body and a terminal assembly arranged on the cover plate body; one side of the cover plate body protruding from the surface of the cover plate body is provided with an explosion-proof structure, and the other side is provided with a groove-shaped structure closed on all sides, and terminal assembly mounting holes are respectively provided near both ends of the cover plate body; the terminal assembly includes a lead-out metal guide pin, an insulating rubber seat, and a metal sleeve; wherein the metal sleeve is laser welded to the terminal assembly mounting hole, so as to install and fix the terminal assembly on the cover plate body; the lead-out metal guide pin of the terminal assembly is arranged to be located on the same side of the cover plate body as the explosion-proof structure, or to be located on the same side of the cover plate body as the groove-shaped structure.

2. The double-sided electrolytic capacitor cover plate according to claim 1, characterized in that: The explosion-proof structure is arranged between two adjacent terminal assembly mounting holes; the groove-shaped structure forms a depression at a position corresponding to the explosion-proof structure.

3. The double-sided electrolytic capacitor cover plate according to claim 1, wherein: The height of the explosion-proof structure protruding from the surface of the cover plate body is less than the depth of the groove of the groove structure on the other side of the cover plate body.

4. The double-sided electrolytic capacitor cover plate according to claim 1, wherein: The explosion-proof structure is in the shape of an annular protrusion, and an annular groove is arranged on the top of the explosion-proof structure protruding from the surface of the cover plate body.

5. The double-sided electrolytic capacitor cover plate according to claim 2, wherein: The concave bottom surface of the groove-shaped structure is provided with a narrow groove.

6. The double-sided electrolytic capacitor cover plate according to claim 5, characterized in that: The depression is in the shape of a long strip, and the surface of the depression is arranged in a smooth arc; the narrow groove is arranged in the shape of a rectangular strip, and the bottom surface of the narrow groove is a plane.

7. The double-sided electrolytic capacitor cover plate according to claim 1, characterized in that: The insulating rubber seat is arranged between the lead-out metal guide pin and the metal sleeve.

8. The double-sided electrolytic capacitor cover plate according to claim 1, wherein: The opening edge of the groove of the groove-shaped structure is arranged in an arc shape to form an arc-shaped opening inclined inwardly; and an arc-shaped transition is arranged at the junction of the bottom surface of the groove and the surrounding side surfaces.

9. The double-sided electrolytic capacitor cover plate according to claim 8, characterized in that: The groove of the groove-shaped structure is a narrow rectangle; the cover plate body is a rectangle, and the connection between each two adjacent surfaces of the outer surface of the cover plate body is arranged in an arc shape.

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