CN115376830B - A well-sealed multilayer solid aluminum electrolytic capacitor - Google Patents

A well-sealed multilayer solid aluminum electrolytic capacitor

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Publication number
CN115376830B
CN115376830B CN202210841506.XA CN202210841506A CN115376830B CN 115376830 B CN115376830 B CN 115376830B CN 202210841506 A CN202210841506 A CN 202210841506A CN 115376830 B CN115376830 B CN 115376830B
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lead
cathode
anode
core
layer
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CN115376830A (en
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黄惠东
杨波
刘尧虎
阳世锦
艾亮
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Hunan Aihua Group Co Ltd
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Hunan Aihua Group Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/15—Solid electrolytic capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/008—Terminals
    • H01G9/012—Terminals specially adapted for solid capacitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004—Details
    • H01G9/08—Housing; Encapsulation

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

A laminated solid aluminum electrolytic capacitor with good sealing performance comprises an insulating shell, a core, sealing glue, an anode lead-out sheet and a cathode lead-out sheet, wherein the core is arranged in the insulating shell in a sealing way through the sealing glue, one end of the anode lead-out sheet is electrically connected with the anode end of the core, the other end of the anode lead-out sheet extends out of the insulating shell or is exposed through the sealing glue, one end of the cathode lead-out sheet is electrically connected with the cathode end of the core, and the other end of the cathode lead-out sheet extends out of the insulating shell or is exposed through the sealing glue. According to the invention, the plastic shell is filled with the sealant to replace the plastic packaging material for packaging, so that moisture can be better prevented from entering the product, one side of the bonding pad sections of the anode lead-out sheet and the cathode lead-out sheet is clung to the insulating shell, the other side of the bonding pad sections are exposed, and the bonding pad sections are covered by the solder paste when the surface mounting is carried out, so that the moisture entering the core from the bonding position of the electrode terminal and the plastic packaging material can be reduced, and the high-humidity tolerance of the aluminum electrolytic capacitor is improved.

Description

Laminated solid aluminum electrolytic capacitor with good sealing performance
Technical Field
The invention relates to a solid aluminum electrolytic capacitor, in particular to a laminated solid aluminum electrolytic capacitor with good sealing performance.
Background
Compared with a liquid aluminum electrolytic capacitor, the manufactured capacitor has the advantages of smaller volume, smaller Equivalent Series Resistance (ESR), wider width, more environment-friendly performance and the like, meets the development trend of miniaturization and high frequency of electronic products, and meets the Surface Mounting Technology (SMT) requirement.
As shown in patent (202122073854.0), the laminated solid aluminum electrolytic capacitor uses a monolithic capacitor core as a basic unit, the monolithic positive electrode terminal comprises a porous aluminum foil and an aluminum oxide dielectric layer formed on the surface of the porous aluminum foil, the negative electrode terminal comprises a porous aluminum foil and an aluminum oxide dielectric layer formed on the surface of the porous aluminum foil, a solid electrolyte first cathode formed on the surface of the dielectric layer, and a carbon layer and a silver layer (i.e. a second cathode and a third cathode) formed on the solid electrolyte. And welding the positive electrode end and the positive electrode lead-out terminal of the single chip together, laminating and bonding the negative electrode end and the negative electrode lead-out terminal of the single chip together through metal slurry, laminating a plurality of single chips on the single chip laminated body to form a multi-layer laminated body, packaging the laminated body with plastic packaging materials, and laminating the laminated body on the lower surface of the laminated solid capacitor through bending twice, thereby forming the laminated solid aluminum electrolytic capacitor.
Because the plastic package material is not completely waterproof, the plastic package material has water absorbability, and after reflow soldering during mounting, gaps can occur at joints due to different expansion coefficients and expansion and contraction between the plastic package material and the lead-out terminals. Under the high temperature and high humidity condition, water vapor or air can pass through the joint gap and the plastic package material body to enter the core, so that the product characteristic is deteriorated.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing a laminated solid aluminum electrolytic capacitor with good sealing performance.
In order to solve the technical problems, the technical scheme is that the laminated solid aluminum electrolytic capacitor with good sealing performance comprises an insulating shell, a core, sealing glue, an anode lead-out sheet and a cathode lead-out sheet, wherein the core is arranged in the insulating shell in a sealing way through the sealing glue, one end of the anode lead-out sheet is electrically connected with the anode end of the core, the other end of the anode lead-out sheet extends out of the insulating shell or the sealing glue is exposed, one end of the cathode lead-out sheet is electrically connected with the cathode end of the core, and the other end of the cathode lead-out sheet extends out of the insulating shell or the sealing glue is exposed.
In the above laminated solid aluminum electrolytic capacitor with good sealing property, preferably, the sealant is filled in the insulating housing, and the core is filled in the insulating housing by the sealant.
The anode lead-out sheet and the cathode lead-out sheet are preferably Z-shaped, and comprise a connecting section, a lead-out section and a bonding pad section, wherein the connecting section of the anode lead-out sheet and the connecting section of the cathode lead-out sheet are respectively and electrically connected with the anode end and the cathode end of the core, and the bonding pad sections of the anode lead-out sheet and the cathode lead-out sheet are exposed outside the insulating shell and the sealant.
In the above laminated solid aluminum electrolytic capacitor with good sealing property, preferably, one side of the lead-out sections of the anode lead-out sheet and the cathode lead-out sheet is inlaid on the inner wall of the insulating shell, and the other side is in sealing connection with the sealant.
In the above laminated solid aluminum electrolytic capacitor with good sealing property, preferably, the connection section of the cathode lead-out sheet is connected to the cathode end of the core through conductive paste, and the connection section of the anode lead-out sheet is connected to the anode end of the core through conductive paste or welding.
The laminated solid aluminum electrolytic capacitor with good sealing performance is preferable in that the core comprises one or more single sheets, the single sheets are laminated to form the core, the single sheets comprise an anode, a cathode and isolation glue, the isolation glue is arranged between the anode and the cathode, the anode comprises a valve metal foil and an oxide film formed on the valve metal foil, the cathode comprises a valve metal foil, the oxide film formed on the valve metal foil, a high-molecular conductive polymer layer and a cathode lead-out layer, the high-molecular conductive polymer layer is formed on the surface of the oxide film, and the cathode lead-out layer is formed on the surface of the high-molecular conductive polymer layer.
In the above laminated solid aluminum electrolytic capacitor with good sealing property, preferably, the cathode lead-out layer includes a carbon layer and a conductive adhesive layer, the carbon layer is formed on the surface of the high-molecular conductive polymer layer, and the conductive adhesive layer is formed on the surface of the carbon layer.
In the above laminated solid aluminum electrolytic capacitor with good sealing property, preferably, after a plurality of single sheets are laminated together, the conductive adhesive layers at the cathode ends of two adjacent single sheets are connected together, and the anode ends of two adjacent single sheets are connected together by welding melt.
In the above laminated solid aluminum electrolytic capacitor with good sealing property, preferably, the cathode lead-out layer includes a carbon layer and a silver paste layer, the carbon layer is formed on the surface of the high-molecular conductive polymer layer, and the silver paste layer is formed on the surface of the carbon layer.
In the above laminated solid aluminum electrolytic capacitor with good sealing property, preferably, after a plurality of single sheets are laminated together, the silver paste layers of the cathode ends of two adjacent single sheets are electrically connected together, and the anode ends of two adjacent single sheets are connected together by welding melt.
Compared with the prior art, the invention has the advantages that in the invention, the plastic shell is encapsulated by adding the sealant instead of the plastic packaging material, so that the water vapor can be better prevented from entering the product, one side of the bonding pad sections of the anode lead-out sheet and the cathode lead-out sheet is tightly attached to the insulating shell, the other side is exposed, and the bonding pad sections and the sealant are covered by the solder paste during surface mounting, so that the water vapor can be reduced from entering the core from the bonding position of the electrode terminal and the plastic packaging material. The connecting sections of the anode lead-out sheet and the cathode lead-out sheet penetrate into the top of the insulating surgery and are electrically connected with the cathode end and the anode end of the core, so that the distance that water vapor enters the core through the joint of the anode lead-out sheet and the cathode lead-out sheet and the filling glue is prolonged, and the difficulty that the water vapor enters the core is increased.
Drawings
Fig. 1 is a schematic cross-sectional structure of a laminated solid aluminum electrolytic capacitor with good sealing property in example 1.
Fig. 2 is a schematic bottom view of the laminated solid aluminum electrolytic capacitor with good sealing performance in example 1 before glue filling.
Fig. 3 is a schematic top view of a laminated solid aluminum electrolytic capacitor with good sealing properties in example 1.
Description of the drawings
1. The device comprises an insulating shell, 2 parts of cores, 21 parts of isolating glue, 22 parts of valve metal foil, 23 parts of oxide film, 24 parts of high-molecular conductive polymer layer, 25 parts of carbon layer, 26 parts of silver paste layer, 27 parts of welding melt, 3 parts of sealant, 4 parts of cathode lead-out sheet, 5 parts of cathode lead-out sheet, 6 parts of connecting section, 7 parts of lead-out section, 8 parts of bonding pad section, 9 parts of conductive paste, 10 parts of welding hole.
Detailed Description
The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown, for the purpose of illustrating the invention, but the scope of the invention is not limited to the specific embodiments shown.
It will be understood that when an element is referred to as being "fixed, affixed, connected, or in communication with" another element, it can be directly fixed, affixed, connected, or in communication with the other element or intervening elements may be present.
Unless defined otherwise, all technical and scientific terms used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the scope of the present invention.
Example 1
The laminated solid aluminum electrolytic capacitor with good sealing performance as shown in fig. 1 and 2 comprises an insulating shell 1, a core 2, a sealant 3, an anode lead-out sheet 4 and a cathode lead-out sheet 5, wherein the core 2 is arranged in the insulating shell 1 in a sealing way through the sealant 3, one end of the anode lead-out sheet 4 is electrically connected with the anode end of the core 2, the other end of the anode lead-out sheet extends out of the insulating shell 1 or the sealant 3 is exposed, one end of the cathode lead-out sheet 5 is electrically connected with the cathode end of the core 2, and the other end of the cathode lead-out sheet extends out of the insulating shell 1 or the sealant 3 is exposed. In the present embodiment, the sealant 3 is filled in the insulating housing 1, and the sealant 3 fills the core 2 in the insulating housing 1. In the present embodiment, the sealant 3 may be an epoxy resin adhesive.
In the present embodiment, the structures of the anode lead-out tab 4 and the cathode lead-out tab 5 are similar. The anode lead-out piece 4 and the cathode lead-out piece 5 are Z-shaped, the anode lead-out piece 4 and the cathode lead-out piece 5 comprise a connecting section 6, a lead-out section 7 and a bonding pad section 8, the connecting section 6 of the anode lead-out piece 4 and the connecting section 6 of the cathode lead-out piece 5 are respectively and electrically connected with the anode end and the cathode end of the core 2, and the bonding pad sections 8 of the anode lead-out piece 4 and the cathode lead-out piece 5 are exposed outside the insulating shell 1 and the sealant 3.
In this embodiment, as shown in fig. 1, the connection section 6, the lead section 7, and the land section 8 of the anode lead tab 4 and the cathode lead tab 5 are all integrally formed, that is, the connection section 6, the lead section 7, and the land section 8 of the anode lead tab 4 and the cathode lead tab 5 are all a piece of sheet bent in a zigzag shape. One side of a connecting section 6 of the anode lead-out sheet 4 is inlaid on the inner wall of the bottom surface of the insulating shell, the other side of the connecting section 6 is connected with the anode end through conductive paste 9, one side of a lead-out section 7 of the anode lead-out sheet 4 is inlaid on the vertical side wall of the insulating shell 1, the other side of the lead-out section is in sealing connection with the sealant 3, and a bonding pad section 8 of the anode lead-out sheet 4 is exposed on the outer side of the sealant 3. As shown in fig. 1 and 3, one side of the land section 8 of the anode lead-out tab 4 is closely attached to the insulating case and the other side is exposed. The structure of the cathode lead-out tab 5 is similar to that of the anode lead-out tab 4. One side of a connecting section 6 of the cathode lead-out sheet 5 is inlaid on the inner wall of the bottom surface of the insulating shell, the other side of the connecting section 6 of the cathode lead-out sheet 5 is connected with a cathode end through conductive paste 9, one side of a lead-out section 7 of the cathode lead-out sheet 5 is inlaid on the vertical side wall of the insulating shell 1, the other side of the lead-out section is in sealing connection with the sealant 3, and a bonding pad section 8 of the cathode lead-out sheet 5 is exposed on the outer side of the sealant 3.
In this embodiment, the connection sections 6 of the anode lead-out tab 4 and the cathode lead-out tab 5 may be connected to the inner wall of the bottom surface of the insulating housing by glue, and the lead-out sections 7 of the anode lead-out tab 4 and the cathode lead-out tab 5 may also be connected to the vertical side wall of the insulating housing by glue.
In this embodiment, the core 2 comprises one or more single sheets, wherein the single sheets are stacked to form the core 2, the single sheets comprise an anode, a cathode and a separator 21, the separator 21 is arranged between the anode and the cathode, the anode comprises a valve metal foil 22 and an oxide film 23 formed on the valve metal foil 22, the cathode comprises the valve metal foil 22, the oxide film 23 formed on the valve metal foil 22, a high-molecular conductive polymer layer 24 and a cathode lead-out layer, the high-molecular conductive polymer layer 24 is formed on the surface of the oxide film 23, and the cathode lead-out layer is formed on the surface of the high-molecular conductive polymer layer 24. In the present embodiment, the valve metal foil 22 is a porous aluminum foil, and the oxide film 23 is an aluminum oxide film.
In this embodiment, as shown in fig. 1, the core 2 comprises 5 single sheets, the 5 single sheets are stacked to form the core 2, the single sheets comprise an anode, a cathode and a separator 21, the separator 21 is arranged between the anode and the cathode to isolate the anode from the cathode, the anode comprises a valve metal foil 22 and an oxide film 23 formed on the valve metal foil 22, and the anode is provided with a welding hole 10. The cathode comprises a valve metal foil 22, an oxide film 23 formed on the valve metal foil 22, a high-molecular conductive polymer layer 24 and a cathode lead-out layer, wherein the high-molecular conductive polymer layer 24 is formed on the surface of the oxide film 23, and the cathode lead-out layer is formed on the surface of the high-molecular conductive polymer layer 24. In the present embodiment, the valve metal foil 22 of the anode and the cathode are the same block, and the oxide film 23 is formed on the valve metal foil 22. The cathode lead-out layer includes a carbon layer 25 and a silver paste layer 26, the carbon layer 25 is formed on the surface of the high-molecular conductive polymer layer 24, and the silver paste layer 26 is formed on the surface of the carbon layer 25.
In this embodiment, after 5 single sheets are stacked together, the silver paste layers 26 of the cathode ends of two adjacent single sheets are connected together, the anode ends of two adjacent single sheets are connected together by a welding melt 27, and the anode is welded to the welding melt 27 by a welding hole 10. In this embodiment, the silver paste layer 26 may be replaced with a conductive paste layer.
In the preparation of the laminated solid aluminum electrolytic capacitor with good sealing property in this embodiment, the anode lead-out tab 4 and the cathode lead-out tab 5 are fixedly connected to the preset position on the inner wall of the insulating housing 1, and then the anode end and the cathode end of the core 2 are electrically connected to the connecting section 6 of the anode lead-out tab 4 and the cathode lead-out tab 5 through the conductive paste 9. And finally, filling and sealing by epoxy resin glue.
In this embodiment, the plastic shell is added with the sealant 3 to replace the plastic package material for packaging, so that water vapor can be better prevented from entering the product, one sides of the bonding pad sections 8 of the anode lead-out sheet 4 and the cathode lead-out sheet 5 are tightly attached to the insulating shell, the other sides of the bonding pad sections are exposed, and the bonding pad sections 8 and the sealant 3 are covered by solder paste during surface mounting, so that water vapor can be reduced from entering the core 2 from the bonding site of the electrode terminal and the plastic package material. Meanwhile, in the invention, the anode lead-out sheet 4 and the cathode lead-out sheet 5 are in Z shape, and the connecting section 6 of the anode lead-out sheet 4 and the cathode lead-out sheet 5 is penetrated into the top of the insulation surgery and is electrically connected with the cathode end and the anode end of the core 2, so that the distance that water vapor enters the core 2 through the joint of the anode lead-out sheet 4 and the cathode lead-out sheet 5 and the filling glue is prolonged, and the difficulty that the water vapor enters the core 2 is increased.

Claims (8)

1.一种密封性好的叠层固态铝电解电容器，其特征在于：包括绝缘壳体、芯子、密封胶、阳极引出片和阴极引出片，所述芯子通过密封胶密封设置在绝缘壳体内；所述阳极引出片的一端与芯子的阳极端电性连接、另一端伸出绝缘壳体或者密封胶裸露，阴极引出片的一端与芯子的阴极端电性连接、另一端伸出绝缘壳体或者密封胶裸露；1. A multilayer solid aluminum electrolytic capacitor with good sealing performance, characterized in that: it comprises an insulating shell, a core, a sealant, an anode lead, and a cathode lead; the core is sealed inside the insulating shell by the sealant; one end of the anode lead is electrically connected to the anode terminal of the core, and the other end extends out of the insulating shell or is exposed by the sealant; one end of the cathode lead is electrically connected to the cathode terminal of the core, and the other end extends out of the insulating shell or is exposed by the sealant. 所述阳极引出片和阴极引出片均呈Z字形；阳极引出片和阴极引出片均包括连接段、引出段和焊盘段，所述阳极引出片的连接段和阴极引出片的连接段分别与芯子的阳极端和阴极端电性连接，阳极引出片和阴极引出片的焊盘段均裸露在绝缘壳体和密封胶的外侧；Both the anode and cathode leads are Z-shaped; both the anode and cathode leads include a connecting section, a lead section, and a pad section. The connecting section of the anode lead and the connecting section of the cathode lead are electrically connected to the anode and cathode ends of the core, respectively. The pad sections of the anode and cathode leads are exposed on the outside of the insulating shell and the sealant. 所述阳极引出片的连接段的一侧镶嵌到绝缘外壳底面的内壁上、另一侧通过导电浆与阳极端连接，阳极引出片的引出段的一侧镶嵌在绝缘壳体竖直的侧壁上、另一侧与密封胶密封连接，阳极引出片的焊盘段裸露在密封胶的外侧；One side of the connecting section of the anode lead is embedded in the inner wall of the bottom surface of the insulating shell, and the other side is connected to the anode end through conductive paste. One side of the lead section of the anode lead is embedded in the vertical side wall of the insulating shell, and the other side is sealed with sealant. The pad section of the anode lead is exposed on the outside of the sealant. 所述阴极引出片的连接段的一侧镶嵌到绝缘外壳底面的内壁上、另一侧通过导电浆与阴极端连接，阴极引出片的引出段的一侧镶嵌在绝缘壳体竖直的侧壁上、另一侧与密封胶密封连接，阴极引出片的焊盘段裸露在密封胶的外侧。One side of the connecting section of the cathode lead is embedded in the inner wall of the bottom surface of the insulating shell, and the other side is connected to the cathode end through conductive paste. One side of the lead section of the cathode lead is embedded in the vertical side wall of the insulating shell, and the other side is sealed with sealant. The pad section of the cathode lead is exposed on the outside of the sealant. 2.根据权利要求1所述的密封性好的叠层固态铝电解电容器，其特征在于：所述密封胶在绝缘壳体内填充，密封胶将芯子灌装在绝缘壳体内。2. The laminated solid aluminum electrolytic capacitor with good sealing performance according to claim 1, characterized in that: the sealant is filled inside the insulating shell, and the sealant fills the core inside the insulating shell. 3.根据权利要求1所述的密封性好的叠层固态铝电解电容器，其特征在于：所述阴极引出片的连接段通过导电浆连接在芯子的阴极端上，所述阳极引出片的连接段通过导电浆或者焊接连接在芯子的阳极端上。3. The laminated solid aluminum electrolytic capacitor with good sealing performance according to claim 1, characterized in that: the connecting section of the cathode lead is connected to the cathode end of the core by conductive paste, and the connecting section of the anode lead is connected to the anode end of the core by conductive paste or welding. 4.根据权利要求1-3任一项所述的密封性好的叠层固态铝电解电容器，其特征在于：所述芯子包括一块或者多块单片，多块单片叠层设置形成芯子；所述单片包括阳极、负极和隔离胶，所述隔离胶设置在阳极和阴极之间；所述阳极包括阀金属箔和在阀金属箔上形成的氧化膜，所述阴极包括阀金属箔、阀金属箔上形成的氧化膜、高分子导电聚合物层和阴极引出层，所述高分子导电聚合物层形成在氧化膜表面，所述阴极引出层在高分子导电聚合物层的表面。4. The well-sealed multilayer solid aluminum electrolytic capacitor according to any one of claims 1-3, characterized in that: the core comprises one or more single pieces, the multiple single pieces being stacked to form the core; each single piece comprises an anode, a negative electrode, and a separating adhesive, the separating adhesive being disposed between the anode and the cathode; the anode comprises a valve metal foil and an oxide film formed on the valve metal foil, the cathode comprises a valve metal foil, an oxide film formed on the valve metal foil, a conductive polymer layer, and a cathode lead-out layer, the conductive polymer layer being formed on the surface of the oxide film, and the cathode lead-out layer being on the surface of the conductive polymer layer. 5.根据权利要求4所述的密封性好的叠层固态铝电解电容器，其特征在于：所述阴极引出层包括碳层和导电胶层，所述碳层形成在高分子导电聚合物层表面，所述导电胶层形成在碳层表面。5. The well-sealed multilayer solid aluminum electrolytic capacitor according to claim 4, characterized in that: the cathode lead-out layer comprises a carbon layer and a conductive adhesive layer, wherein the carbon layer is formed on the surface of the polymer conductive layer, and the conductive adhesive layer is formed on the surface of the carbon layer. 6.根据权利要求5所述的密封性好的叠层固态铝电解电容器，其特征在于：多块所述单片叠层在一起后，相邻两块单片的阴极端的导电胶层连接在一起，相邻两块单片的阳极端通过焊接融熔体连接在一起。6. The well-sealed multilayer solid aluminum electrolytic capacitor according to claim 5, characterized in that: after multiple single plates are stacked together, the conductive adhesive layers at the cathode ends of two adjacent single plates are connected together, and the anode ends of two adjacent single plates are connected together by welding molten material. 7.根据权利要求4所述的密封性好的叠层固态铝电解电容器，其特征在于：所述阴极引出层包括碳层和银浆层，所述碳层形成在高分子导电聚合物层表面，所述银浆层形成在碳层表面。7. The well-sealed multilayer solid aluminum electrolytic capacitor according to claim 4, characterized in that: the cathode lead-out layer comprises a carbon layer and a silver paste layer, wherein the carbon layer is formed on the surface of the polymer conductive layer, and the silver paste layer is formed on the surface of the carbon layer. 8.根据权利要求7所述的密封性好的叠层固态铝电解电容器，其特征在于：多块所述单片叠层在一起后，相邻两块单片的阴极端的银浆层电性在一起，相邻两块单片的阳极端通过焊接融熔体连接在一起。8. The well-sealed multilayer solid aluminum electrolytic capacitor according to claim 7, characterized in that: after multiple single plates are stacked together, the silver paste layers at the cathode ends of two adjacent single plates are electrically connected, and the anode ends of two adjacent single plates are connected together by a welded molten metal.
CN202210841506.XA 2022-07-18 2022-07-18 A well-sealed multilayer solid aluminum electrolytic capacitor Active CN115376830B (en)

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Citations (3)

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