Aluminum electrolytic capacitor monomer
Through the laminated aluminum electrolytic capacitor monomer, the problems of complex structure and low production efficiency in the prior art are solved, and the production of low-cost and efficient aluminum electrolytic capacitors are achieved.
Patent Information
- Application Number
- CN202421948812.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-13
AI Technical Summary
The existing aluminum electrolytic capacitors have complex structures and require winding equipment, resulting in low core pack quality and low production efficiency.
A stacked structure of positive electrode aluminum foil sheet and negative electrode aluminum foil sheet is adopted to lead the positive electrode and negative electrode outlet, and combine the electrolytic paper and the cladding to form an aluminum electrolytic capacitor monomer without winding.
The structure of aluminum electrolytic capacitors is simplified, production costs are reduced, and production efficiency is improved.
Smart Images
Figure CN223155825U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of capacitors, and particularly relates to a single aluminum electrolytic capacitor. Background Art
[0002] A capacitor is a passive device, and its main function is charging and discharging. With the continuous improvement of capacitor performance, capacitors have been widely used in consumer electronics products, communication products, computers and peripheral products, new energy, automation control, automotive industry, optoelectronic products, high-speed railways, aviation, and military equipment.
[0003] Among various capacitors, compared with other types of capacitors, when having the same size, the aluminum electrolytic capacitor can obtain a larger CV value per unit area than other capacitors, can store more charges, and is cheaper, so it is widely popular.
[0004] Currently, an aluminum electrolytic capacitor generally consists of a core package formed by winding a positive aluminum foil, a negative aluminum foil, and electrolytic paper, a cylindrical aluminum shell, and a sealing cover plate with positive and negative terminal connection terminals. The cover plate is provided with positive and negative terminal lead-out holes, and the positive and negative terminals are installed on the cover plate through through holes. When in use, the aluminum electrolytic capacitor is integrally installed and fixed on the circuit board by welding the positive and negative terminals to the circuit board. However, this structure of the aluminum electrolytic capacitor is complex, corresponding winding equipment is required in the manufacturing process, and the quality of the core package is likely to be low during the winding process.
[0005] The disclosure of the above background art content is only used to assist in understanding the inventive concept and technical solution of the utility model, and it does not necessarily belong to the prior art of this patent application. Without clear evidence indicating that the above content was publicly available on the filing date of this patent application, the above background art should not be used to evaluate the novelty and creativity of this application. Summary of the Utility Model
[0006] The purpose of the utility model is to provide a single aluminum electrolytic capacitor to solve at least one of the problems in the above background art.
[0007] To achieve the above purpose, the technical solution of the embodiment of the utility model is realized as follows:
[0008] An aluminum electrolytic capacitor unit includes a positive aluminum foil, a negative aluminum foil, electrolytic paper disposed between the positive aluminum foil and the negative aluminum foil, and a cladding for covering the positive aluminum foil, the negative aluminum foil, and the electrolytic paper; wherein, the positive aluminum foil and the negative aluminum foil have the same shape, a positive lead-out port is led out from the positive aluminum foil, a negative lead-out port is led out from the negative aluminum foil, the positive aluminum foil, the electrolytic paper, and the negative aluminum foil are stacked together, and the negative lead-out port is away from the positive lead-out port.
[0009] In some embodiments, the positive lead-out port and the negative lead-out port have the same shape.
[0010] In some embodiments, the positive aluminum foil includes a sheet-shaped positive plate, the sheet-shaped positive plate is rectangular, and the positive lead-out port extends outward along the rectangular long side of the sheet-shaped positive plate near one end of the sheet-shaped positive plate.
[0011] In some embodiments, the negative aluminum foil includes a sheet-shaped negative plate, the sheet-shaped negative plate is rectangular, and the negative lead-out port extends outward along the rectangular long side of the sheet-shaped negative plate near one end of the sheet-shaped negative plate.
[0012] In some embodiments, the size of the sheet-shaped positive plate of the positive aluminum foil is less than or equal to the size of the sheet-shaped negative plate.
[0013] In some embodiments, the length of the positive lead-out port occupying the rectangular long side of the sheet-shaped positive plate does not exceed one-half of the total length of the rectangular long side.
[0014] In some embodiments, the length of the negative lead-out port occupying the rectangular long side of the sheet-shaped negative plate does not exceed one-half of the total length of the rectangular long side.
[0015] In some embodiments, the shape of the electrolytic paper is rectangular, and the rectangular area of the electrolytic paper is greater than or equal to the rectangular area of the sheet-shaped positive plate or less than or equal to the rectangular area of the sheet-shaped negative plate.
[0016] In some embodiments, the cladding includes a first wrapper and a second wrapper; the first wrapper and the second wrapper enclose together to form a receiving space for accommodating the positive aluminum foil, the negative aluminum foil, and the electrolytic paper.
[0017] In some embodiments, the first wrapper and the second wrapper are provided with rectangular recesses, and the size of the rectangular recesses is equal to the size of the electrolytic paper.
[0018] The beneficial effects of the technical solution of the present utility model are:
[0019] Compared with the prior art, the single structure of the aluminum electrolytic capacitor of the present utility model is simple, without the participation of winding-related equipment, with low cost and high production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0021] Figure 1 is a schematic diagram of a single aluminum electrolytic capacitor of an embodiment of the present utility model;
[0022] Figure 2 is a schematic diagram of the positive aluminum foil of a single aluminum electrolytic capacitor of an embodiment of the present utility model;
[0023] Figure 3 is a schematic diagram of the negative aluminum foil of a single aluminum electrolytic capacitor of an embodiment of the present utility model;
[0024] Figure 4 is a schematic diagram of the electrolytic paper of a single aluminum electrolytic capacitor of an embodiment of the present utility model;
[0025] Figure 5 is a schematic diagram of the first wrapper of a single aluminum electrolytic capacitor of an embodiment of the present utility model;
[0026] Figure 6 is a schematic diagram of the second wrapper of a single aluminum electrolytic capacitor of an embodiment of the present utility model;
[0027] Figure 7 is a schematic diagram of the positive aluminum foil of a single aluminum electrolytic capacitor of another embodiment of the present utility model;
[0028] Figure 8 is a schematic diagram of the negative aluminum foil of a single aluminum electrolytic capacitor of another embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the embodiments of the present utility model clearer and more understandable, and to enable those skilled in the art to better understand the solutions of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or 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 indirectly connected to the other element. In addition, the connection can be for a fixing function or for a circuit connection function.
[0031] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.
[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present utility model, unless otherwise clearly defined and limited, the meaning of "a plurality" is two or more. Terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication 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 specific circumstances.
[0033] Refer to Figures 1 - 5As shown in the figure, as an embodiment of the present utility model, a single aluminum electrolytic capacitor 100 is provided, which includes a positive aluminum foil sheet 10, a negative aluminum foil sheet 20, an electrolytic paper 30 disposed between the positive aluminum foil sheet 10 and the negative aluminum foil sheet 20, and a cladding 40 that wraps the positive aluminum foil sheet 10, the negative aluminum foil sheet 20, and the electrolytic paper 30 therein; wherein, the positive aluminum foil sheet 10 includes a sheet-shaped positive electrode plate 101 and a positive electrode lead-out port 102 extending from the sheet-shaped positive electrode plate 101, and the positive electrode lead-out port 102 is integrally formed with the sheet-shaped positive electrode plate 101; the negative aluminum foil sheet 20 includes a sheet-shaped negative electrode plate 201 and a negative electrode lead-out port 202 extending from the sheet-shaped negative electrode plate 201, and the negative electrode lead-out port 202 is integrally formed with the sheet-shaped negative electrode plate 201; the sheet-shaped positive electrode plate 101 and the sheet-shaped negative electrode plate 201 are arranged in a thin sheet shape.
[0034] Figure 2 As shown in the figure, it is a schematic diagram of the positive aluminum foil sheet 10 of an embodiment of the present utility model. Among them, the sheet-shaped positive electrode plate 101 of the positive aluminum foil sheet is rectangular, and one end of the positive electrode lead-out port 102 close to the sheet-shaped positive electrode plate 101 extends outward along the rectangular long side of the sheet-shaped positive electrode plate 101. In some embodiments, the length of the positive electrode lead-out port 102 occupying the rectangular long side of the sheet-shaped positive electrode plate 102 does not exceed one-half of the total length of the rectangular long side. In some embodiments, the positive electrode lead-out port 102 is generally in an "I" shape. It should be noted that in some other embodiments, the positive electrode lead-out port 102 can also be in various other shapes. In some embodiments, the positive electrode lead-out port 102 can also be arranged at any position on the periphery of the sheet-shaped positive electrode plate 101.
[0035] Figure 3 As shown in the figure, it is a schematic diagram of the negative aluminum foil sheet 20 of an embodiment of the present utility model. The positive aluminum foil sheet 10 and the negative aluminum foil sheet 20 have the same shape; corresponding to the positive aluminum foil sheet 10, the sheet-shaped negative electrode plate 201 of the negative aluminum foil sheet 20 is rectangular, and one end of the negative electrode lead-out port 202 close to the sheet-shaped negative electrode plate 20 extends outward along the rectangular long side of the sheet-shaped negative electrode plate 201; the negative electrode lead-out port 202 is far from the positive electrode lead-out port 102. When the positive aluminum foil sheet 10, the electrolytic paper 30, and the negative aluminum foil sheet 20 are stacked together, the positive electrode lead-out port 102 and the negative electrode lead-out port 202 are respectively located at both ends of the combination, rather than overlapping. In some embodiments, the length of the negative electrode lead-out port 202 occupying the rectangular long side of the sheet-shaped negative electrode plate does not exceed one-half of the total length of the rectangular long side. It should be noted that the negative electrode lead-out port 202 is generally in an "I" shape. In some other embodiments, the negative electrode lead-out port 202 can also be in various other shapes. In some embodiments, the structure of the negative electrode lead-out port 202 can be the same as or different from the structure of the positive electrode lead-out port 102.
[0036] In some embodiments, the shape of the sheet-like positive electrode plate 101 of the positive electrode aluminum foil sheet 10 is the same as that of the sheet-like negative electrode plate 201 of the negative electrode aluminum foil sheet 20, and the size of the sheet-like positive electrode plate 101 of the positive electrode aluminum foil sheet 10 is less than or equal to the size of the sheet-like negative electrode plate 201 of the negative electrode aluminum foil sheet 20.
[0037] Figure 4 The figure shows a schematic diagram of the electrolytic paper 30 according to an embodiment of the present invention. Corresponding to the positive electrode aluminum foil sheet 10 and the negative electrode aluminum foil sheet 20, the shape of the electrolytic paper 30 is substantially the same as that of the sheet-like positive electrode plate 10 and the sheet-like negative electrode plate 20; in some embodiments, the shape of the electrolytic paper 30 is rectangular, and the rectangular area of the electrolytic paper 30 is greater than or equal to the rectangular area of the sheet-like positive electrode plate or less than or equal to the rectangular area of the sheet-like negative electrode plate.
[0038] Figure 5 、 6 The figure shows a schematic diagram of the cladding 40 according to an embodiment of the present invention. The cladding 40 includes a first cladding sheet 401 and a second cladding sheet 402. Figure 5 The figure shows a schematic diagram of the first cladding sheet 401. Figure 6 The figure shows a schematic diagram of the second cladding sheet 402; the first cladding sheet 401 and the second cladding sheet 402 have the same shape. After the first cladding sheet 401 and the second cladding sheet 402 are enclosed together, a receiving space is formed to accommodate the positive electrode aluminum foil sheet 10, the negative electrode aluminum foil sheet 20, and the electrolytic paper 30. Specifically, the first cladding sheet and the second cladding sheet are provided with a rectangular recess 400, and the size of the rectangular recess 400 is equal to the size of the electrolytic paper 30; a sealing edge 403 is formed on the outer extension of the four sides of the rectangular recess 400. The rectangular recesses 400 of the first cladding sheet 401 and the second cladding sheet 402 are combined relatively to form the receiving space, and the sealing edges 403 on the periphery of the rectangular recess 400 are attached together to seal the receiving space. In some embodiments, the first cladding sheet 401 and the second cladding sheet 402 are coating films, and the first cladding sheet 401 and the second cladding sheet 402 are enclosed to form a coating film envelope, and the positive electrode aluminum foil sheet 10, the negative electrode aluminum foil sheet 20, and the electrolytic paper 30 are encapsulated in the coating film envelope.
[0039] In some embodiments, the positive electrode aluminum foil sheet 10 and the negative electrode aluminum foil sheet 20 can be provided in a strip shape. Corresponding to the positive electrode aluminum foil sheet 10 and the negative electrode aluminum foil sheet 20, the electrolytic paper 30 and the cladding 40 are also in a strip shape. Of course, in some embodiments, such as Figure 7 、 Figure 8As shown, the positive aluminum foil sheet 10 and the negative aluminum foil sheet 20 can also be set in other sheet-like rectangles, and the positive lead-out port 102 and the negative lead-out port 202 are respectively arranged on the short sides of the rectangle. It should be noted that in some other embodiments, the positive aluminum foil sheet and the negative aluminum foil sheet can also be set into sheet-like structures as long as the positive plate of the positive aluminum foil sheet and the negative plate of the negative aluminum foil sheet have the same shape and ensure that the edges can coincide when they overlap.
[0040] In some embodiments, the aluminum purity of the positive aluminum foil sheet or the negative aluminum foil sheet is ≥99.9%.
[0041] It can be understood that the above content is a further detailed description of the creation of the present utility model in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the creation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the creative concept of the present utility model, several substitutions or modifications can be made to these described embodiments, and these substitution or modification methods should all be regarded as belonging to the protection scope of this patent. In the description of this specification, the description with reference to 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 connection with the embodiment or example are included in at least one embodiment or example of the present utility model.
[0042] In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the creation of the present utility model 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 defined by the appended claims.
[0043] In addition, the scope of the creation of the present utility model is not intended to be limited to the specific embodiments of the processes, machines, manufactures, compositions of matter, means, methods, and steps described in the specification. Those of ordinary skill in the art will easily understand that currently existing or later to be developed above-disclosed, processes, machines, manufactures, compositions of matter, means, methods, or steps that perform substantially the same functions as the corresponding embodiments described herein or achieve substantially the same results as the embodiments described herein can be utilized. Therefore, the appended claims are intended to include these processes, machines, manufactures, compositions of matter, means, methods, or steps within their scope.
Claims
1. An aluminum electrolytic capacitor unit, characterized in that: It includes a positive aluminum foil sheet, a negative aluminum foil sheet, an electrolytic paper disposed between the positive aluminum foil sheet and the negative aluminum foil sheet, and a cladding for covering the positive aluminum foil sheet, the negative aluminum foil sheet, and the electrolytic paper; wherein, the positive aluminum foil sheet and the negative aluminum foil sheet have the same shape, a positive lead-out port is led out from the positive aluminum foil sheet, a negative lead-out port is led out from the negative aluminum foil sheet, the positive aluminum foil sheet, the electrolytic paper, and the negative aluminum foil sheet are stacked together, and the negative lead-out port is away from the positive lead-out port.
2. The aluminum electrolytic capacitor single body according to claim 1, wherein: The positive lead-out port and the negative lead-out port have the same shape.
3. The single aluminum electrolytic capacitor according to claim 1, characterized in that: The positive aluminum foil sheet includes a sheet-shaped positive plate, the sheet-shaped positive plate is rectangular, and the positive lead-out port extends outward along the rectangular long side of the sheet-shaped positive plate near one end of the sheet-shaped positive plate.
4. The aluminum electrolytic capacitor single body according to claim 3, characterized in that: The negative aluminum foil sheet includes a sheet-shaped negative plate, the sheet-shaped negative plate is rectangular, and the negative lead-out port extends outward along the rectangular long side of the sheet-shaped negative plate near one end of the sheet-shaped negative plate.
5. The aluminum electrolytic capacitor single body according to claim 4, characterized in that: The size of the sheet-shaped positive plate of the positive aluminum foil sheet is less than or equal to the size of the sheet-shaped negative plate.
6. The aluminum electrolytic capacitor single body according to claim 4, characterized in that: The length of the rectangular long side of the sheet-shaped positive plate occupied by the positive lead-out port does not exceed one half of the total length of the rectangular long side.
7. The single aluminum electrolytic capacitor according to claim 4, characterized in that: The length of the rectangular long side of the sheet-shaped negative plate occupied by the negative lead-out port does not exceed one half of the total length of the rectangular long side.
8. The single aluminum electrolytic capacitor according to claim 4, characterized in that: The shape of the electrolytic paper is rectangular, and the rectangular area of the electrolytic paper is greater than or equal to the rectangular area of the sheet-shaped positive plate or less than or equal to the rectangular area of the sheet-shaped negative plate.
9. The aluminum electrolytic capacitor cell according to claim 1, characterized in that: The cladding includes a first cladding sheet and a second cladding sheet; after the first cladding sheet and the second cladding sheet are enclosed together, a receiving space is formed to accommodate the positive aluminum foil sheet, the negative aluminum foil sheet, and the electrolytic paper.
10. The aluminum electrolytic capacitor single body according to claim 9, characterized in that: The first cladding sheet and the second cladding sheet are provided with rectangular recesses, and the size of the rectangular recesses is equal to the size of the electrolytic paper.