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Non-solid electrolyte all-tantalum capacitor and manufacturing method thereof

A technology for tantalum capacitors and manufacturing methods, which is applied in the direction of electrolytic capacitors, capacitors, capacitor parts, etc., can solve problems such as low reliability, insufficient capacity of tantalum capacitors, and poor reverse pressure resistance, and achieve high reliability and reverse pressure resistance. The effect of strong pressure ability and improved anti-pressure ability

Active Publication Date: 2012-02-08
ZHUZHOU HONGDA ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is: in order to overcome the shortcomings of the existing non-solid electrolyte tantalum capacitors with insufficient capacity, poor back pressure resistance and low reliability, the present invention provides a brand-new back pressure resistant large-capacity non-solid electrolyte tantalum capacitor and its The production method, the non-solid electrolyte tantalum capacitor has good reverse pressure resistance, larger capacity, and more stable and reliable performance

Method used

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  • Non-solid electrolyte all-tantalum capacitor and manufacturing method thereof
  • Non-solid electrolyte all-tantalum capacitor and manufacturing method thereof
  • Non-solid electrolyte all-tantalum capacitor and manufacturing method thereof

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Embodiment 1

[0021] attached figure 1 A schematic diagram of the basic structure of the present invention is given. It can be seen from the accompanying drawings that the present invention is a non-solid electrolyte all-tantalum capacitor, which adopts a new non-solid electrolyte all-tantalum capacitor structure and its manufacturing process. A bidirectional energization method is adopted, and a layer of anti-back pressure Ta is attached to both sides of the anode sheet 1 and / or cathode sheet 2. 2 o 5 Metal oxide film medium, and adopts the sandwich structure of two layers of cathode sheet and one layer of anode sheet, the anode sheet 1 and the cathode sheet 2 are composed of porous tantalum core, around the anode sheet 1 and cathode sheet 2 in the capacitor shell 3, And the holes of the porous tantalum core of the anode sheet 1 and the cathode sheet 2 are all filled with non-solid electrolyte, and the back pressure Ta on the anode sheet 1 and / or cathode sheet 2 2 o 5 The metal oxide fi...

Embodiment 2

[0031] attached figure 2 A schematic diagram of another structure of the present invention is given. It can be seen from the accompanying drawings that the structural principle of the second embodiment is the same as that of the first embodiment, except that this embodiment adopts a double-layer anode sheet structure. figure 2 Among them, the first layer of anode sheets 9 and the second layer of anode sheets 10 are alternately separated from the first cathode sheets 14, the second cathode sheets 15 and the third cathode sheets 16, and each layer of anode sheets is in contact with the cathode sheet. The first insulating layer 11, the first insulating layer 12, the third insulating layer 13, and the fourth insulating layer 14 are arranged between the surfaces; the first layer of anode sheet 9 and the second layer of anode sheet 10 are connected in series by a lead wire 15 and passed through the anode The lead wire 16 leads out, and the first cathode sheet 14 , the second catho...

Embodiment 3

[0033] attached image 3 A schematic diagram of another structure of the present invention is given. It can be seen from the accompanying drawings that the structural principle of the third embodiment is the same as that of the first embodiment. image 3 Among them, the anode sheet 18 is an N-layer anode sheet with more than two layers, the cathode sheet 19 is an N+1 layer cathode sheet with more than three layers, and the insulating layer 20 is an N+2 layer insulating layer with more than four layers; the anode sheet 18 and the cathode The sheets 19 are staggered and separated to form a structure in which two cathode sheets clamp an anode sheet; all the anode sheets 18 are connected in series with lead wires and lead out through the anode lead wire 4, and all the cathode sheets 19 are connected in series with lead wires and then lead out through the cathode lead wire 5. All anode sheets are composed of porous tantalum cores, and a layer of metal oxide film media is attached t...

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Abstract

Non-solid electrolyte all-tantalum capacitor and its manufacturing method, including casing, cathode piece, anode piece, cathode lead wire, anode lead wire and gland, both cathode piece and anode piece are placed in the shell shell; cathode lead wire passes through the gland and cathode piece connection; the anode lead is connected to the anode sheet through the gland; the cathode sheet of the porous tantalum core made of tantalum metal powder is pressed and sintered, and both sides of the anode sheet and / or cathode sheet are attached with Ta2O5 for insulation and back pressure resistance Metal oxide film medium; the cathode sheet and the anode sheet are a sandwich structure of two layers of cathode sheets sandwiching an anode sheet, and an isolation insulating layer is provided between the anode sheet and the cathode sheet; the cathode sheet is composed of a porous tantalum core, on the cathode sheet It can also be attached with a metal oxide film dielectric as an insulating layer; the shell, gland and other structures of the capacitor are all made of tantalum materials; around the anode and cathode sheets, and in the porous tantalum core holes of the anode and cathode sheets are filled There is a non-solid electrolyte to form a non-solid electrolyte all-tantalum capacitor.

Description

technical field [0001] The patent of the invention relates to an electronic component, in particular to the design and manufacturing technology of a back pressure-resistant large-capacity non-solid electrolyte all-tantalum electrolytic capacitor. Background technique [0002] At present, with the rapid development of scientific and technological power, the scope of human activities is getting wider and wider, and there are more and more researches and explorations on space. The development of space technology has put forward higher requirements for electronic components. Today, a world-wide component revolution is brewing, and tantalum electrolytic capacitors, as an important branch of electrolytic capacitors, are widely used in communications, aerospace and military industries, submarine cables and advanced electronic devices, and civilian appliances. Super large capacity, low ESR, high frequency, high temperature, and high reliability are one of its main development direc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/00H01G9/042H01G9/048H01G9/08H01G9/022
Inventor 刘勇刚刘新军
Owner ZHUZHOU HONGDA ELECTRONICS
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