CN105869891A - SMD type electrolytic capacitor - Google Patents

SMD type electrolytic capacitor Download PDF

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Publication number
CN105869891A
CN105869891A CN201610196742.5A CN201610196742A CN105869891A CN 105869891 A CN105869891 A CN 105869891A CN 201610196742 A CN201610196742 A CN 201610196742A CN 105869891 A CN105869891 A CN 105869891A
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CN
China
Prior art keywords
described
sleeve
negative
negative electrode
positive electrode
Prior art date
Application number
CN201610196742.5A
Other languages
Chinese (zh)
Inventor
阮冠峰
Original Assignee
中山市帝森电子科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中山市帝森电子科技有限公司 filed Critical 中山市帝森电子科技有限公司
Priority to CN201610196742.5A priority Critical patent/CN105869891A/en
Publication of CN105869891A publication Critical patent/CN105869891A/en

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004Details
    • H01G9/008Terminals
    • H01G9/012Terminals specially adapted for solid capacitors
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004Details
    • H01G9/022Electrolytes, absorbents
    • H01G9/025Solid electrolytes
    • H01G9/032Inorganic semiconducting electrolytes, e.g. MnO2
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004Details
    • H01G9/04Electrodes or formation of dielectric layers thereon
    • H01G9/042Electrodes or formation of dielectric layers thereon characterised by the material
    • H01G9/0425Electrodes or formation of dielectric layers thereon characterised by the material specially adapted for cathode
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004Details
    • H01G9/04Electrodes or formation of dielectric layers thereon
    • H01G9/048Electrodes or formation of dielectric layers thereon characterised by their structure
    • H01G9/052Sintered electrodes
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/004Details
    • H01G9/07Dielectric layers
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01GCAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G9/00Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/15Solid electrolytic capacitors
    • H01G9/153Skin fibre

Abstract

The invention discloses an SMD type electrolytic capacitor. The SMD type electrolytic capacitor comprises a shell and a capacitor component, wherein the capacitor component is arranged in the shell, a capacitor core of the capacitor component comprises a porous tantalum powder sintered block positive electrode substrate, a TaO5 film is formed on the surface of the tantalum powder sintered block positive electrode substrate, a solid electrolyte MnO2 layer is formed at a negative electrode end of the tantalum powder sintered block positive electrode substrate, a negative electrode graphite layer covers the solid electrolyte MnO2 layer, a lead-tin alloy conductive layer is sprayed on the negative electrode graphite layer, the shell comprises a positive electrode sleeve, a negative electrode sleeve and an insulation sleeve, the positive electrode sleeve and the negative electrode sleeve are arranged at the two ends of the shell, the insulation sleeve is connected between the positive electrode sleeve and the negative electrode sleeve, clamping grooves are formed in the two ends of the inner wall surface of the insulation sleeve, a hook corresponding to the clamping groove is arranged at one end, connected with the insulation sleeve, of each of the positive electrode sleeve and the negative electrode sleeve, and the positive electrode sleeve, the negative electrode sleeve and the insulation sleeve are connected with one another to form the shell by buckling the hooks into the clamping grooves. The SMD type electrolytic capacitor is simple in structure and is convenient to assemble.

Description

A kind of patch electrolysis capacitor

Technical field

The present invention relates to capacitor technology field, particularly to a kind of patch electrolysis capacitor.

Background technology

Electric capacity is called in capacitor generally letter, is a kind of device accommodating electric charge.For electrochemical capacitor, Referring generally to aluminum electrolytic condenser, its use thin-oxide film is as dielectric substance, with aluminum as electrode Material.Owing to the thinnest dielectric substance can be made, so can compared to for the volume of capacitor To obtain relatively large electric capacity.The patch electrolysis capacitor how designing a kind of simple in construction is the present invention Technical problem to be solved.

Summary of the invention

The main object of the present invention is to provide that a kind of volume is little, capacity big, the patch electrolysis of simple in construction Capacitor.

The present invention proposes a kind of patch electrolysis capacitor, including shell and the electric capacity being placed in described shell Device element, described capacitor element includes capacitor core, negative wire and positive wire, described shell by It is placed in the anode electrode set at two ends, negative electrode set and is connected to described anode electrode set and described negative electricity Insulation sleeve between the set of pole is constituted, and described insulation sleeve and described anode electrode set, described negative electrode overlap it Between connected by snap, be provided with draw-in groove at the two ends of described insulation sleeve internal face, in described positive electrical What pole set overlapped with described negative electrode is provided with the card corresponding with described draw-in groove with one end that described insulation sleeve is connected Hook, buckled in corresponding described draw-in groove by described snap fit, make described anode electrode set, negative electrode set It is interconnected to form shell with described insulation sleeve;

Described capacitor core includes being burnt by the porous tantalum powder of high temperature sintering after tantalum metal powder briquet Caking positive electrode substrate, the surface of described tantalum powder sintering block positive electrode substrate is formed with TaO5 film through anodic oxidation, Negative pole end in described tantalum powder sintering block positive electrode substrate forms solid through high temperature sintering again by dipping manganese nitrate Electrolyte MnO2 layer, is coated with negative pole graphite linings, described on described solid electrolyte MnO2 layer Being coated with terne metal conductive layer in negative pole graphite linings, described positive wire is from described tantalum powder sintering block positive pole Extending out in matrix contact with described anode electrode set, described negative wire is from described solid electrolyte MnO2 Layer extend out to contact with described negative electrode set.

Preferably, described negative wire is copper wire, and described positive wire is nickel wire.

Having the beneficial effect that of the patch electrolysis capacitor of the present invention

The shell of the present invention is by being placed in the anode electrode set at two ends, negative electrode set and being connected to anode electrode Insulation sleeve between set and negative electrode set is constituted, between insulation sleeve and anode electrode set, negative electrode set Connected by snap, be provided with draw-in groove at the two ends of insulation sleeve internal face, at anode electrode set and negative pole One end being connected with insulation sleeve of electrode sleeve is provided with the snap fit corresponding with draw-in groove, is buckled into accordingly by snap fit In draw-in groove, anode electrode set, negative electrode set is made to be interconnected to form shell with insulation sleeve, simple in construction, Easy to assembly.

After patch electrolysis capacitor uses the tantalum powder briquet that granule is the thinnest, high temperature sintering becomes porous Tantalum powder sintering block positive electrode substrate, the effective area in monomer whose is long-pending is big, uses temperature range width;Tantalum powder burns The surface of caking positive electrode substrate is formed with TaO5 film through anodic oxidation, and the dielectric constant of TaO5 film compares alumina The dielectric constant changing film is big;Tantalum powder sintering block positive electrode substrate negative pole end by dipping manganese nitrate again through height Temperature sintering forms solid electrolyte MnO2 layer, is coated with negative pole graphite on solid electrolyte MnO2 layer Layer, is coated with terne metal conductive layer in negative pole graphite linings;Therefore at the identical pressure and bar of capacitance Under part, the much smaller of the volume ratio aluminium electrolutic capacitor of patch electrolysis capacitor, can be made into super Miniaturized component, and stable performance, work long hours the electrical property remaining to keep good.

Accompanying drawing explanation

Fig. 1 be the patch electrolysis capacitor of the present invention sectional view.

The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings further Explanation.

Detailed description of the invention

Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit Determine the present invention.

Reference Fig. 1, an embodiment of the patch electrolysis capacitor of the proposition present invention:

A kind of patch electrolysis capacitor, including shell and the capacitor element being placed in shell, capacitor Element includes capacitor core, negative wire and positive wire.Shell by be placed in two ends anode electrode overlap 11, Negative electrode set 12 and insulation sleeve 13 structure being connected between anode electrode set 11 and negative electrode set 12 Become, be connected by snap between insulation sleeve 13 with anode electrode set 11, negative electrode set 12.? The two ends of insulation sleeve 13 internal face are provided with draw-in groove, anode electrode set 11 with negative electrode set 12 with absolutely One end that edge set 13 is connected is provided with the snap fit 14 corresponding with draw-in groove, buckles into corresponding draw-in groove by snap fit 14 In, make anode electrode set 11, negative electrode set 12 be interconnected to form shell, structure with insulation sleeve 13 Simply, easy to assembly.

Capacitor core includes by the porous tantalum powder sintering of high temperature sintering after tantalum metal powder briquet Block positive electrode substrate 21, the effective area in monomer whose is long-pending is big, uses temperature range width.Tantalum powder sintering block is just The surface of pole matrix 21 is formed with TaO5 film 22 through anodic oxidation, and the dielectric constant of TaO5 film 22 compares aluminum The dielectric constant of oxide-film is big.Tantalum powder sintering block positive electrode substrate 21 negative pole end by dipping manganese nitrate again Form solid electrolyte MnO2 layer 23 through high temperature sintering, solid electrolyte MnO2 layer 23 covers There is negative pole graphite linings 24, negative pole graphite linings 24 is coated with terne metal conductive layer 25.Negative wire For copper wire, positive wire is nickel wire.Positive wire extend out in tantalum powder sintering block positive electrode substrate 21 with just Pole electrode sleeve 11 contacts, and negative wire extend out to and negative electrode set from solid electrolyte MnO2 layer 23 12 contacts.

This patch electrolysis capacitor under conditions of identical pressure and capacitance, patch electrolysis capacitor The much smaller of volume ratio aluminium electrolutic capacitor, can be made into miniature component, and stable performance, Work long hours the electrical property remaining to keep good.

The foregoing is only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, Every equivalent structure transformation utilizing description of the invention and accompanying drawing content to be made, or directly or indirectly use In the technical field that other are relevant, the most in like manner it is included in the scope of patent protection of the present invention.

Claims (2)

1. a patch electrolysis capacitor, including shell and the capacitor element being placed in described shell, Described capacitor element includes capacitor core, negative wire and positive wire, it is characterised in that outside described Shell is by being placed in the anode electrode set at two ends, negative electrode set and to be connected to described anode electrode set negative with described Insulation sleeve between the electrode sleeve of pole is constituted, described insulation sleeve and described anode electrode set, described negative electrode Connected by snap between set, be provided with draw-in groove at the two ends of described insulation sleeve internal face, described just Being provided with one end that described insulation sleeve is connected that pole electrode sleeve overlaps with described negative electrode is corresponding with described draw-in groove Snap fit, buckled in corresponding described draw-in groove by described snap fit, make described anode electrode set, negative electricity Pole set is interconnected to form shell with described insulation sleeve;
Described capacitor core includes being burnt by the porous tantalum powder of high temperature sintering after tantalum metal powder briquet Caking positive electrode substrate, the surface of described tantalum powder sintering block positive electrode substrate is formed with TaO5 film through anodic oxidation, Negative pole end in described tantalum powder sintering block positive electrode substrate forms solid through high temperature sintering again by dipping manganese nitrate Electrolyte MnO2 layer, is coated with negative pole graphite linings, described on described solid electrolyte MnO2 layer Being coated with terne metal conductive layer in negative pole graphite linings, described positive wire is from described tantalum powder sintering block positive pole Extending out in matrix contact with described anode electrode set, described negative wire is from described solid electrolyte MnO2 Layer extend out to contact with described negative electrode set.
Patch electrolysis capacitor the most according to claim 1, it is characterised in that described negative pole draws Line is copper wire, and described positive wire is nickel wire.
CN201610196742.5A 2016-03-31 2016-03-31 SMD type electrolytic capacitor CN105869891A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610196742.5A CN105869891A (en) 2016-03-31 2016-03-31 SMD type electrolytic capacitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610196742.5A CN105869891A (en) 2016-03-31 2016-03-31 SMD type electrolytic capacitor

Publications (1)

Publication Number Publication Date
CN105869891A true CN105869891A (en) 2016-08-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610196742.5A CN105869891A (en) 2016-03-31 2016-03-31 SMD type electrolytic capacitor

Country Status (1)

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CN (1) CN105869891A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4764844A (en) * 1986-06-13 1988-08-16 Murata Manufacturing Co., Ltd. Electronic component with terminal caps
CN104240951A (en) * 2014-07-09 2014-12-24 宁国市裕华电器有限公司 Capacitor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4764844A (en) * 1986-06-13 1988-08-16 Murata Manufacturing Co., Ltd. Electronic component with terminal caps
CN104240951A (en) * 2014-07-09 2014-12-24 宁国市裕华电器有限公司 Capacitor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
肖景和: "《电子元器件识别与检测百问百答》", 31 July 2009 *

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Application publication date: 20160817

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