Flexible lead electrolytic capacitor

Abstract

The utility model discloses a flexible lead electrolytic capacitor, which comprises an aluminum shell, a core package, a packaging metal cover plate and a flexible lead terminal, wherein the core package is arranged in the aluminum shell in a sealing manner; wherein the packaging metal cover plate comprises a metal cover plate main body and a terminal assembly arranged on the metal cover plate main body; the terminal assembly comprises a lead-out metal guide pin; and the flexible lead terminal comprises a connecting end connected with the lead-out metal guide pin, a welding end welded on the circuit board, and a flexible lead main body connected between the welding end and the connecting end. The flexible lead electrolytic capacitor is simple in structure and can be applied to various application scenes.

Description

Technical Field

[0001] The utility model belongs to the technical field of capacitors, and in particular relates to a flexible lead electrolytic capacitor. 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. When in use, the positive and negative terminals are welded to the circuit board, so that the aluminum electrolytic capacitor is installed and fixed on the circuit board as a whole.

[0004] However, in general, the length of the positive and negative terminals set on the cover is limited. In some special application scenarios, or to facilitate the overall design of the circuit board, in some cases, the positive and negative terminals of the electrolytic capacitor will be a certain distance away from the welding points on the circuit board, and the current electrolytic capacitors are difficult to meet such application 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, that is, to provide a flexible lead electrolytic capacitor that can be flexibly used.

[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 flexible lead electrolytic capacitor 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 flexible lead electrolytic capacitor comprises an aluminum shell, a core package sealed in the aluminum shell, a packaged metal cover plate, and a flexible lead terminal; wherein the packaged metal cover plate comprises a metal cover plate body and a terminal assembly arranged on the metal cover plate body; the terminal assembly comprises a lead-out metal guide pin; the flexible lead terminal comprises a connecting end connected to the lead-out metal guide pin, a welding end welded on a circuit board, and a flexible lead body connected between the welding end and the connecting end.

[0010] In some embodiments, one end of the flexible lead body is bent multiple times to form the connecting end; the connecting end is provided with a connecting hole, and the lead-out metal guide pin of the terminal assembly passes through the connecting hole to achieve electrical connection with the flexible lead body.

[0011] In some embodiments, the lead-out metal guide pin is welded or riveted to the connection hole, and the diameter of the connection hole is equal to the outer diameter of the lead-out metal guide pin.

[0012] In some embodiments, the flexible lead body is an FPC soft cable.

[0013] In some embodiments, the welding end is in the same plane as the flexible lead body, and a welding hole is provided at the welding end, through which the welding end is welded to the circuit board.

[0014] In some embodiments, the flexible lead body includes a positive lead circuit and a negative lead circuit to correspond to the positive and negative lead metal pins of the electrolytic capacitor, respectively.

[0015] In some embodiments, an isolation groove is provided between the positive lead circuit and the negative lead circuit.

[0016] In some embodiments, the isolation groove is a square groove, and a plurality of through holes are disposed in the square groove.

[0017] In some embodiments, the connection end of the lead terminal is configured to be L-shaped, and a square recess is provided at the location of the connection hole.

[0018] In some embodiments, one side of the metal cover body is set to be a plane, and the other side is provided with a groove; the metal cover body is provided with a terminal assembly mounting hole.

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

[0020] Compared with the prior art, the flexible lead electrolytic capacitor of the utility model has a simple structure and can be applied to various application scenarios. 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 diagram of a flexible lead electrolytic capacitor according to an embodiment of the utility model;

[0023] Figure 2 It is a schematic diagram of the connection between the flexible lead terminal and the metal cover plate of a flexible lead electrolytic capacitor in one embodiment of the utility model;

[0024] Figure 3 It is a partial diagram of a flexible lead electrolytic capacitor according to an embodiment of the utility model;

[0025] Figure 4 It is a partial illustration of a flexible lead terminal of a flexible lead electrolytic capacitor according to an embodiment of the utility model;

[0026] Figure 5 This is an exploded schematic diagram of a terminal assembly of a flexible lead electrolytic capacitor according to an embodiment of the utility model;

[0027] Figure 6 The utility model is an embodiment of a metal cover plate of a flexible lead electrolytic capacitor. 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-Figure 6 As shown, as an embodiment of the utility model, a flexible lead electrolytic capacitor 100 is provided. Figure 1 , Figure 2 , Figure 3 As shown, the flexible lead electrolytic capacitor 100 of the utility model includes an aluminum shell 10, a core package sealed in the aluminum shell 10, a packaged metal cover 300, and a flexible lead terminal 20; wherein the packaged metal cover 300 includes a metal cover body 30, a terminal assembly 400 arranged on the metal cover body 30; the terminal assembly 400 includes a lead-out metal guide pin 40; the flexible lead terminal 20 includes a connecting end 21 connected to the lead-out metal guide pin 40, a welding end 22 welded on a circuit board, and a flexible lead body 23 connected between the welding end 22 and the connecting end 21.

[0033] Please refer to Figure 1 , Figure 2 , Figure 4As shown, in some embodiments, the flexible lead body 23 is an FPC soft flat cable; one end of the flexible lead body 23 is bent to form a connection end 21, and the connection end 21 is provided with a connection hole 210, and the lead metal guide pin 40 of the terminal assembly 400 passes through the connection hole 210 to achieve electrical connection with the flexible lead body 23. In some embodiments, the lead metal guide pin 40 is welded or riveted to the connection hole 210, and the aperture of the connection hole 210 is equal to the outer diameter of the lead metal guide pin 40. It should be noted that in some other embodiments, the metal guide pin 40 can also be connected to the connection hole 210 in other ways. In the embodiment of the utility model, there are two connection holes 210 to connect the positive and negative lead metal guide pins respectively. The welding end 22 is in the same plane as the flexible lead body 23, and the welding end 22 is provided with a welding hole 220, through which it is welded to the circuit board, thereby achieving electrical connection of the flexible lead body 23. In some embodiments, two welding holes 220 are provided to correspond to the positive and negative lead metal guide pins of the electrolytic capacitor respectively. The flexible lead body 23 includes a positive lead line 230 and a negative lead line 231 to correspond to the positive and negative lead metal guide pins of the electrolytic capacitor respectively, and an isolation groove 232 is provided between the positive lead line 230 and the negative lead line 231; in some embodiments, the isolation groove 232 is a square groove, and a plurality of through holes 2320 are provided in the square groove, so as to increase the flexibility of the flexible lead body and facilitate bending.

[0034] In some embodiments, the connection end 21 of the flexible lead terminal 20 is configured to be L-shaped, and a square recess is provided at the location of the connection hole 210 .

[0035] Please refer to Figure 3 , Figure 6 As shown, the groove of the cover body 30 faces outward to encapsulate the core package in the aluminum shell 10, or the plane of the cover body 30 faces outward to encapsulate the core package in the aluminum shell 10; when the groove of the cover body 30 faces outward, the surface of the aluminum electrolytic capacitor is concave; and when the plane of the cover body 30 faces outward, the surface of the aluminum electrolytic capacitor is flat.

[0036] Please refer to Figure 5 , Figure 6 As shown, one side of the metal cover body 30 is set to a plane, and the other side is provided with a groove 31, and the metal cover body 30 is provided with a terminal assembly mounting hole 310; the terminal assembly 400 includes a lead-out metal guide pin 40, an insulating rubber seat 41, and a metal sleeve 42; the lead-out metal guide pin 40 of the terminal assembly 400 is located on the same side as the plane of the metal cover body 30 or the lead-out metal guide pin 40 of the terminal assembly 400 is located on the same side as the groove 31 of the metal cover body 30.

[0037] Specifically, 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 welded to the terminal assembly mounting hole 310, so as to mount and fix the terminal assembly 400 on the metal cover body 30. In some embodiments, the lead-out metal guide pin 40 protrudes outwardly from the plane of the metal cover body 30; in other embodiments, the lead-out metal guide pin 40 protrudes outwardly from the groove surface of the metal cover body 30.

[0038] Reference Figure 3 , Figure 6 As shown, the opening edge of the groove 31 on the groove surface of the metal cover body 30 is set to be arc-shaped, so as to form 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 metal cover body 30 is a narrow rectangle. In some embodiments, the metal cover body 30 is a rectangle, and the outer surface of the metal cover body 30 is set to be arc-shaped at the connection between each two adjacent surfaces.

[0039] It should be noted that, in some other embodiments, the metal cover body 30 and / or the groove 31 of the metal cover body 30 may also be set to other shapes. No matter what shape they are set to, as long as they do not deviate from the main purpose of the invention, they should belong to the protection scope of the invention.

[0040] In some embodiments, the depth of the groove 31 of the groove surface is less than the height of the metal sleeve 42 of the terminal assembly 400; the outer diameter of the metal sleeve 42 is adapted to the terminal assembly mounting hole 310; the insulating rubber seat 41 of the terminal assembly 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.

[0041] In some embodiments, there are two terminal assembly mounting holes 310 for mounting the positive and negative terminal assemblies. The two terminal assembly mounting holes 310 are symmetrically or asymmetrically arranged on the metal cover body 30 .

[0042] Reference Figure 5 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.

[0043] In an embodiment of the utility model, the CP lead 401 of the lead-out metal guide needle 40 and the aluminum stem 402 are 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 disc-shaped and is welded to the battery core of the aluminum electrolytic capacitor through the welding base 403.

[0044] 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.

[0045] The metal sleeve 42 is sleeved 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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 flexible lead electrolytic capacitor, characterized in that: It includes an aluminum shell, a core package sealed in the aluminum shell, a packaged metal cover plate, and a flexible lead terminal; wherein the packaged metal cover plate includes a metal cover plate body and a terminal assembly arranged on the metal cover plate body; the terminal assembly includes a lead-out metal guide pin; the flexible lead terminal includes a connecting end connected to the lead-out metal guide pin, a welding end welded on a circuit board, and a flexible lead body connected between the welding end and the connecting end.

2. The flexible lead electrolytic capacitor according to claim 1, characterized in that: One end of the flexible lead body is bent multiple times to form the connection end; the connection end is provided with a connection hole, and the lead-out metal guide pin of the terminal assembly passes through the connection hole to achieve electrical connection with the flexible lead body.

3. The flexible lead electrolytic capacitor according to claim 2, characterized in that: The lead-out metal guide pin is welded or riveted to the connection hole, and the hole diameter of the connection hole is equal to the outer diameter of the lead-out metal guide pin.

4. The flexible lead electrolytic capacitor according to claim 1, characterized in that: The flexible lead body is an FPC soft flat cable.

5. The flexible lead electrolytic capacitor according to claim 2, characterized in that: The welding end is in the same plane as the flexible lead body, and is provided with a welding hole, through which the welding end is welded to the circuit board.

6. The flexible lead electrolytic capacitor according to claim 1, characterized in that: The flexible lead body includes a positive lead circuit and a negative lead circuit to correspond to the positive and negative lead metal guide pins of the electrolytic capacitor respectively.

7. The flexible lead electrolytic capacitor according to claim 6, characterized in that: An isolation groove is provided between the positive electrode lead circuit and the negative electrode lead circuit.

8. The flexible lead electrolytic capacitor according to claim 7, characterized in that: The isolation groove is a square groove, and a plurality of through holes are arranged in the square groove.

9. The flexible lead electrolytic capacitor according to claim 2, characterized in that: The connection end of the lead terminal is arranged in an L shape, and a square recess is arranged at the position of the connection hole.

10. The flexible lead electrolytic capacitor according to claim 9, characterized in that: One side of the metal cover body is arranged as a plane, and the other side is arranged with a groove; and a terminal assembly mounting hole is arranged on the metal cover body.

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