Laminated aluminum electrolytic capacitor monomer

Abstract

The utility model discloses a laminated aluminum electrolytic capacitor monomer, which comprises an anode aluminum foil sheet, a cathode aluminum foil sheet, electrolytic paper arranged between the anode aluminum foil sheet and the cathode aluminum foil sheet, and a coating wrapping the anode aluminum foil sheet, the cathode aluminum foil sheet and the electrolytic paper. Wherein the positive aluminum foil sheet comprises a sheet-shaped positive plate and a positive lead-out port extending from the sheet-shaped positive plate; the electrolytic paper is of a sheet-shaped sandwich structure, and the sheet-shaped positive plate of the positive aluminum foil sheet is contained in the sandwich structure. The laminated aluminum electrolytic capacitor provided by the utility model is simple in structure, does not pass through a winding process, and is high in core package quality.

Description

Technical Field

[0001] The utility model belongs to the technical field of capacitors, and particularly relates to a laminated aluminum electrolytic capacitor monomer. Background Art

[0002] A capacitor is a passive device, and its main function is to charge and discharge. 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 the size is the same, 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, and the winding process is likely to result in poor quality of the core package. Moreover, as long as one of the positive aluminum foil, negative aluminum foil, or electrolytic paper in the core package is damaged, the quality of the entire capacitor will be affected.

[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 laminated aluminum electrolytic capacitor monomer 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] A single laminated aluminum electrolytic capacitor includes a positive aluminum foil sheet, a negative aluminum foil sheet, electrolytic paper disposed between the positive aluminum foil sheet and the negative aluminum foil sheet, and a coating film that encapsulates the positive aluminum foil sheet, the negative aluminum foil sheet, and the electrolytic paper therein; wherein, the positive aluminum foil sheet includes a sheet-shaped positive electrode plate and a positive electrode lead-out port extending from the sheet-shaped positive electrode plate; the electrolytic paper is arranged in a sheet-shaped sandwich structure, and the sheet-shaped positive electrode plate of the positive aluminum foil sheet is received in the sandwich structure.

[0009] In some embodiments, the electrolytic paper includes a first planar layer and a second planar layer that are parallel to each other, and the sandwich structure is formed between the first planar layer and the second planar layer.

[0010] In some embodiments, the electrolytic paper is square, and the sheet-shaped sandwich structure is configured to have an opening in at least one direction.

[0011] In some embodiments, the sheet-shaped positive electrode plate of the positive aluminum foil sheet is rectangular, and the positive electrode lead-out port extends outward along the long rectangular side of the sheet-shaped positive electrode plate near one end of the sheet-shaped positive electrode plate.

[0012] In some embodiments, the coating film forms a receiving space for accommodating the positive aluminum foil sheet, the negative aluminum foil sheet, and the electrolytic paper, and the height of the receiving space is approximately equal to the sum of the thicknesses of the positive aluminum foil sheet, the negative aluminum foil sheet, and the electrolytic paper.

[0013] In some embodiments, the thickness of the sheet-shaped positive electrode plate of the positive aluminum foil sheet is less than the thickness of the positive electrode lead-out port, and the height differences between the upper and lower surfaces of the positive electrode lead-out port and the upper and lower surfaces of the sheet-shaped positive electrode plate are equal.

[0014] In some embodiments, the thickness of the first planar layer of the electrolytic paper is equal to the thickness of the second planar layer.

[0015] In some embodiments, the negative aluminum foil sheet includes a sheet-shaped negative electrode plate and a negative electrode lead-out port extending from the sheet-shaped negative electrode plate.

[0016] In some embodiments, the negative aluminum foil sheet is provided with a receiving space, the positive aluminum foil sheet is placed in the sheet-shaped sandwich structure of the electrolytic paper, and is placed in the receiving space of the negative aluminum foil sheet together with the electrolytic paper.

[0017] 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 electrode plate or greater than or equal to the rectangular area of the sheet-shaped negative electrode plate.

[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 laminated aluminum electrolytic capacitor of the present utility model is simple, without undergoing a winding process, and the core package has high quality. 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 following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic diagram of a single laminated aluminum electrolytic capacitor in an embodiment of the present utility model;

[0022] Figure 2 It is an exploded schematic diagram of a single laminated aluminum electrolytic capacitor in an embodiment of the present utility model;

[0023] Figure 3 It is a schematic diagram of electrolytic paper of a single laminated aluminum electrolytic capacitor in an embodiment of the present utility model;

[0024] Figure 4 is Figure 3 a schematic diagram of part A in;

[0025] Figure 5 is Figure 3 a schematic diagram of part B in;

[0026] Figure 6 It is a schematic diagram of the negative aluminum foil of a single laminated aluminum electrolytic capacitor in an embodiment of the present utility model;

[0027] Figure 7 It is a partial schematic diagram of the negative aluminum foil of a single laminated aluminum electrolytic capacitor in an embodiment of the present utility model;

[0028] Figure 8 It is a schematic diagram of the positive aluminum foil of a single laminated aluminum electrolytic capacitor in an embodiment of the present utility model;

[0029] Figure 9 is Figure 8 a partially enlarged schematic diagram of part C in;

[0030] Figure 10 It is a partial schematic diagram of a single laminated aluminum electrolytic capacitor without a coating film in an embodiment of the present utility model;

[0031] Figure 11 It is a schematic diagram of the first wrapping sheet of a single laminated aluminum electrolytic capacitor in an embodiment of the present utility model;

[0032] Figure 12 This is a schematic diagram of the second wrapping piece of a laminated aluminum electrolytic capacitor monomer according to an embodiment of the present utility model. Detailed implementation manners

[0033] 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 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 in conjunction with 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] It should be noted that when an element is referred to as "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 "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 fixing or for circuit connection.

[0035] It should be understood that the orientation or positional relationship indicated by the terms "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 cannot be understood as a limitation to the present utility model.

[0036] 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 number 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" and other terms 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 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 specific circumstances.

[0037] Refer toFigures 1 - 3 , Figure 6 , Figure 8 , Figure 10 As shown in Figures 1 - 3 , Figure 6 , Figure 8 , and Figure 10 , as an embodiment of the present utility model, a single-layer laminated aluminum electrolytic capacitor 100 is provided, which includes a positive aluminum foil 10, a negative aluminum foil 20, an electrolytic paper 30 disposed between the positive aluminum foil 10 and the negative aluminum foil 20, and a coating film 40 that wraps the positive aluminum foil 10, the negative aluminum foil 20, and the electrolytic paper 30 therein; wherein, the positive aluminum foil 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; the electrolytic paper 30 is arranged in a sheet-shaped sandwich structure, and the sheet-shaped positive electrode plate 101 of the positive aluminum foil 10 is received in the sandwich structure.

[0038] Referring to Figures 3 - 5 , Figure 10 As shown in Figures 3 - 5 and Figure 10 , the electrolytic paper 30 includes a first planar layer 301 and a second planar layer 302 that are parallel to each other, and the sandwich structure is formed between the first planar layer 301 and the second planar layer 302; in some embodiments, the electrolytic paper 30 is square, and the sheet-shaped sandwich structure is configured to have openings in at least one direction, and the positive aluminum foil 10 can be inserted into the sheet-shaped sandwich structure from the opening; in some embodiments, the sheet-shaped sandwich structure has openings in three directions and is closed in one direction. In some embodiments, the distance between the first planar layer 301 and the second planar layer 302 is less than or equal to the thickness of the positive aluminum foil 10; in some embodiments, the surface size of the sandwich structure is the same as the surface of the positive aluminum foil 10, so as to ensure that the positive aluminum foil 10 can be covered by the electrolytic paper 30.

[0039] In some embodiments, the negative aluminum foil 20 is provided with a receiving space, the positive aluminum foil 10 is placed in the sheet-shaped sandwich structure of the electrolytic paper 30, and is placed in the receiving space of the negative aluminum foil 20 together with the electrolytic paper 30.

[0040] Referring to Figure 1 , Figure 2 , Figures 8 - 10As shown, the positive electrode lead-out port 102 of the positive electrode aluminum foil sheet 10 is integrally formed with the sheet-shaped positive electrode plate 101; the negative electrode 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 shape of the sheet-shaped positive electrode plate 101 is the same as the shape of the sheet-shaped negative electrode plate 201. The envelope 40 is formed with a receiving space for receiving the positive electrode aluminum foil sheet 10, the negative electrode aluminum foil sheet 20 and the electrolytic paper 30, the height of the receiving space is substantially equal to the sum of the thicknesses of the positive electrode aluminum foil sheet 10, the negative electrode aluminum foil sheet 20 and the electrolytic paper 30, and the shape of the receiving space is substantially the same as the shape of the electrolytic paper 30.

[0041] Reference Figure 8 , Figure 9 As shown, the sheet-like positive electrode plate 101 of the positive electrode aluminum foil 10 is rectangular, and the positive electrode lead-out port 102 extends outward along the rectangular long strip side of the sheet-like positive electrode plate 101 near one end of the sheet-like positive electrode plate 101. In some embodiments, the length of the rectangular long strip side of the sheet-like positive electrode plate 101 occupied by the positive electrode lead-out port 102 does not exceed one-half of the rectangular long strip side. In some embodiments, the positive electrode lead-out port 102 is roughly in the shape of an "I". It should be noted that, in some other embodiments, the positive electrode lead-out port 102 may also be in various other shapes. In some embodiments, the positive electrode lead-out port 102 may also be set at any position on the periphery of the sheet-like positive electrode plate 101.

[0042] Please refer to Figure 2 , Figure 6 , Figure 7 As shown, corresponding to the positive aluminum foil 10, the sheet-shaped negative electrode plate 201 of the negative aluminum foil 20 is rectangular, and the negative electrode lead-out port 202 is close to one end of the sheet-shaped negative electrode plate 201 and extends outward along the rectangular long strip edge of the sheet-shaped negative electrode plate 201; the negative electrode lead-out port 202 is far away from the positive electrode lead-out port 102. When the positive aluminum foil 10, the electrolytic paper 30, and the negative aluminum foil 20 are stacked together, the positive electrode lead-out port 102 and the negative electrode lead-out port 202 are respectively located at the two ends of the assembly, rather than overlapping. In some embodiments, the length of the rectangular long strip edge of the sheet-shaped negative electrode plate 201 occupied by the negative electrode lead-out port 202 does not exceed one-half of the rectangular long strip edge. It should be noted that the negative electrode lead-out port 202 is roughly in the shape of an "I". In some other embodiments, the negative electrode lead-out port 202 may also be in various other shapes. In some embodiments, the structure of the negative electrode lead-out port 202 may be the same as or different from the structure of the positive electrode lead-out port 102.

[0043] Reference Figure 4 , Figure 5 , Figure 8 , Figure 9As shown, in some embodiments, the thickness of the sheet-shaped positive electrode plate 101 of the positive electrode aluminum foil sheet 10 is less than the thickness of the positive electrode lead-out port 102, and the height differences between the upper and lower surfaces of the positive electrode lead-out port 102 and the upper and lower surfaces of the sheet-shaped positive electrode plate 101 are equal. In some embodiments, the thickness of the first planar layer 301 of the electrolytic paper 30 is equal to the thickness of the second planar layer 302. And this thickness is equal to the height differences between the upper and lower surfaces of the positive electrode lead-out port 102 and the upper and lower surfaces of the sheet-shaped positive electrode plate 101, so that the surface of the positive electrode lead-out port 102 is flush with the surface of the electrolytic paper 30.

[0044] Referring to Figure 6 、 Figure 7 、 Figure 10 As shown, the negative electrode lead-out port 202 of the negative electrode aluminum foil sheet 20 extends from the sheet-shaped negative electrode plate 201. The negative electrode lead-out port 202 includes a connecting portion 2010 connected to the sheet-shaped negative electrode plate, a bending portion 2011 bent upward from the connecting portion 2010, and an extending portion 2012 extending outward from the bending portion 2011. In some embodiments, the sheet-shaped negative electrode plate 201 of the negative electrode aluminum foil sheet 20 includes a top plate 2021 and a bottom plate 2022, and the accommodating space is formed between the top plate 2021 and the bottom plate 2022; the negative electrode lead-out port 202 extends on the top plate 2021 or the bottom plate 2022. In some embodiments, three sides of the accommodating space are provided with openings and one side is sealed; it should be noted that in some other embodiments, the accommodating space can also be designed to have openings on only one side. In some embodiments, the extending portion 2012 is on the same horizontal plane as the bottom plate 2022; in some embodiments, the height of the bending portion 2011 is approximately equal to the gap height between the top plate 2021 and the bottom plate 2022; in some embodiments, the extending portion 2012 is on the same horizontal plane as the top plate 2021. In some embodiments, the thickness of the extending portion 2012 is the same as the thickness of the top plate 2021 or the bottom plate 2022.

[0045] Figure 11 、 Figure 12 As shown in the schematic diagram of the coating film of an embodiment of the present invention, the coating film 40 includes a first wrapping sheet 401 and a second wrapping sheet 402, Figure 11 As shown in the schematic diagram of the first wrapping sheet, Figure 12The figure shows a schematic diagram of the second wrapping sheet; the first wrapping sheet 401 and the second wrapping sheet 402 have the same shape. After the first wrapping sheet 401 and the second wrapping sheet 402 are enclosed together, the accommodation space is formed to accommodate the positive aluminum foil sheet 10, the negative aluminum foil sheet 20, and the electrolytic paper 30. Specifically, the first wrapping sheet 401 and the second wrapping sheet 402 are provided with rectangular recesses 400, and the size of the rectangular recesses 400 is the same as the size of the electrolytic paper 30; a sealing edge 403 is formed on the outer extension around the rectangular recesses 400. The rectangular recesses 400 of the first wrapping sheet 401 and the second wrapping sheet 402 are relatively combined together to form the accommodation space, and the sealing edges 403 on the periphery of the rectangular recesses are attached together to seal the accommodation space. In some embodiments, the first wrapping sheet 401 and the second wrapping sheet 402 are wrapping films, and the first wrapping sheet 401 and the second wrapping sheet 402 are enclosed to form a wrapping film envelope, and the positive aluminum foil sheet 10, the negative aluminum foil sheet 20, and the electrolytic paper 30 are encapsulated in the wrapping film envelope. In some embodiments, only one of the first wrapping sheet 401 and the second wrapping sheet 402 is provided with a recess 400, and the other wrapping sheet is a flat surface. After the two wrapping sheets are attached together, the recess forms the accommodation space.

[0046] In some embodiments, corresponding to the positive aluminum foil sheet 10 and the negative aluminum foil sheet 20, the shape of the electrolytic paper 30 is substantially the same as that of the sheet positive electrode plate 101 and the sheet negative electrode plate 201; 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 positive electrode plate 101 or greater than or equal to the rectangular area of the sheet negative electrode plate 201.

[0047] In some embodiments, the positive aluminum foil sheet 10 and the negative aluminum foil sheet 20 can be provided in a strip shape. Corresponding to the positive aluminum foil sheet 10 and the negative aluminum foil sheet 20, the electrolytic paper 30 and the cladding 40 are also in a strip shape. Of course, in some embodiments, the positive aluminum foil sheet 10 and the negative aluminum foil sheet 20 can also be provided in other sheet-like rectangles, and the positive electrode lead-out port 102 and the negative electrode lead-out port 202 are respectively provided on the short sides of the rectangle. It should be noted that in some other embodiments, the positive aluminum foil sheet 10 and the negative aluminum foil sheet 20 can also be provided in a sheet shape of their structure, as long as the positive electrode plate of the positive aluminum foil sheet 10 and the negative electrode plate of the negative aluminum foil sheet 20 have the same shape and ensure that the edges can coincide when they overlap.

[0048] In some embodiments, the positive aluminum foil sheet 10 is configured to be formed by masking and leaving a margin on the electronic aluminum foil and then corroding it with acid and alkali solutions. Specifically, from the corrosion stage, the positive aluminum foil sheet 10 is masked and left with a margin to corrode out the surface area, and an electrochemical reaction occurs to generate a surface oxide film. After the non-masked surface of the aluminum foil is formed, the mask is removed by high-temperature baking to expose the margin, and then rapid formation is carried out again to achieve full-voltage formation on the surface. Alternatively, the mask can be not removed, and when making subsequent processes, the mask at specific positions can be removed by laser to form a positive electrode lead-out port 102 with local blanking.

[0049] The negative aluminum foil sheet 20 is configured to include a sheet-shaped negative electrode plate 201 and a negative electrode lead-out port 202. The sheet-shaped negative electrode plate 202 includes a top plate 2021 and a bottom plate 2022, and a receiving space is formed between the top plate 2021 and the bottom plate 2022.

[0050] In some embodiments, the encapsulating film is a transparent heat-resistant material.

[0051] In some embodiments, the aluminum purity of the positive aluminum foil sheet or the negative aluminum foil sheet is ≥99.9%.

[0052] 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 creation of the present utility model belongs, without departing from the creative concept of the present utility model, several alternatives or modifications can be made to these described embodiments, and these alternative or modified ways should all be regarded as belonging to the protection scope of this patent. In the description of this specification, the description referring 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.

[0053] 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 and their advantages of the creation of the present utility model 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.

[0054] Moreover, the scope of the present utility model creation 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 readily understand that the above-disclosed, processes, machines, manufactures, compositions of matter, means, methods, or steps that are currently existing or to be developed later can be utilized to perform substantially the same functions as the corresponding embodiments described herein or to achieve substantially the same results as the embodiments described herein. Accordingly, the appended claims are intended to include such processes, machines, manufactures, compositions of matter, means, methods, or steps within their scope.

Claims

1. A laminated aluminum electrolytic capacitor monomer, characterized in that: It comprises a positive aluminum foil, a negative aluminum foil, an electrolytic paper arranged between the positive aluminum foil and the negative aluminum foil, and a film encapsulating the positive aluminum foil, the negative aluminum foil and the electrolytic paper; wherein the positive aluminum foil comprises a sheet-shaped positive electrode plate and a positive electrode lead-out port extending from the sheet-shaped positive electrode plate; the electrolytic paper is arranged into a sheet-shaped sandwich structure, and the sheet-shaped positive electrode plate of the positive aluminum foil is accommodated in the sandwich structure.

2. The laminated aluminum electrolytic capacitor monomer according to claim 1, characterized in that: The electrolytic paper includes a first plane layer and a second plane layer which are parallel to each other, and the sandwich structure is formed between the first plane layer and the second plane layer.

3. The laminated aluminum electrolytic capacitor monomer according to claim 1, characterized in that: The electrolytic paper is square, and the sheet-like sandwich structure is configured to have an opening in at least one direction.

4. The laminated aluminum electrolytic capacitor monomer according to claim 1, characterized in that: The sheet-shaped positive electrode plate of the positive electrode aluminum foil is rectangular, and the positive electrode lead-out port is close to one end of the sheet-shaped positive electrode plate and extends outward along the rectangular long strip edge of the sheet-shaped positive electrode plate.

5. The laminated aluminum electrolytic capacitor monomer according to claim 1, characterized in that: The envelope forms a containing space for containing the positive aluminum foil, the negative aluminum foil and the electrolytic paper, and the height of the containing space is roughly equal to the sum of the thicknesses of the positive aluminum foil, the negative aluminum foil and the electrolytic paper.

6. The laminated aluminum electrolytic capacitor monomer according to claim 1, characterized in that: The thickness of the sheet-shaped positive electrode plate of the positive electrode aluminum foil is less than the thickness of the positive electrode lead-out port, and the height difference between the upper and lower surfaces of the positive electrode lead-out port and the upper and lower surfaces of the sheet-shaped positive electrode plate is equal.

7. The laminated aluminum electrolytic capacitor monomer according to claim 2, characterized in that: The thickness of the first plane layer of the electrolytic paper is equal to the thickness of the second plane layer.

8. The laminated aluminum electrolytic capacitor monomer according to claim 1, characterized in that: The negative electrode aluminum foil sheet includes a sheet-shaped negative electrode plate and a negative electrode lead-out port extending from the sheet-shaped negative electrode plate.

9. The laminated aluminum electrolytic capacitor monomer according to claim 1, characterized in that: The negative electrode aluminum foil is provided with a containing space, and the positive electrode aluminum foil is placed in the sheet-like sandwich structure of the electrolytic paper and is placed together with the electrolytic paper in the containing space of the negative electrode aluminum foil.

10. The laminated aluminum electrolytic capacitor monomer according to claim 9, characterized in that: The electrolytic paper is in a rectangular shape, and the rectangular area of ​​the electrolytic paper is greater than or equal to the rectangular area of ​​the sheet-shaped positive electrode plate or greater than or equal to the rectangular area of ​​the sheet-shaped negative electrode plate.

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