US3284684A - Electrical capacitor and method of making the same - Google Patents

Electrical capacitor and method of making the same Download PDF

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Publication number
US3284684A
US3284684A US424151A US42415165A US3284684A US 3284684 A US3284684 A US 3284684A US 424151 A US424151 A US 424151A US 42415165 A US42415165 A US 42415165A US 3284684 A US3284684 A US 3284684A
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US
United States
Prior art keywords
layer
metal
capacitor
melting metal
layers
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Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
US424151A
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English (en)
Inventor
Gaenge Friedrich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens and Halske AG
Siemens AG
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Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
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Publication of US3284684A publication Critical patent/US3284684A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/228—Terminals
    • H01G4/232—Terminals electrically connecting two or more layers of a stacked or rolled capacitor
    • H01G4/2325—Terminals electrically connecting two or more layers of a stacked or rolled capacitor characterised by the material of the terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/002—Details
    • H01G4/228—Terminals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/43—Electric condenser making
    • Y10T29/435—Solid dielectric type

Definitions

  • the present invention relates to an electrical capacitor, preferably with a dielectric of a thermoplastic material, the plates of which, consisting especially of thin metal layers, produced by vapor treatment, are first contacted by end contact layers of a metal having a high melting temperature upon which is applied a layer of metal having a low melting temperature.
  • end contact layers are usually produced by the so-called Schoops" metal spraying process in which a spraying on of molten metal is effected.
  • Schoops metal spraying process
  • end contact layers are also known, however, methods of producing end contact layers by other processes as for example, by metal vapor treatment.
  • end contact layers not of one metal, but of several metals successively applied to form several layers. It is, for example, a known practice to first apply to the end surfaces a copper layer and only then over such copper layer, to apply low melting metal, for example, zinc.
  • an electrical capacitor the plates of which are contacted by end contact layers of a first applied high melting metal on which is superimposed a layer of a low melting metal, in which, according to the invention, the first applied high melting metal is arranged on the ends of the capacitor in the form of individual particles, not forming a cohesive layer, but covering essentially each winding layer of the capacitor.
  • the end contact layer according to the invention there is melted into the end surfaces first of all through a short spray burst which may be achieved in the Soho-op process a certain number of particles of a metal with relatively high melting point (ca. 1000* C. and above) and preferably relative high density, such as, for example, gold, copper, cobalt, iron, manganese, nickel, vanadium, zirconium and thereupon there is sprayed on a cohesive layer of a metal with a relatively low melting point such as, for example, zinc or tin or a z'yerin alloy, and to this, in the usual manner, the terminal wires are fastened.
  • a metal with relatively high melting point ca. 1000* C. and above
  • relative high density such as, for example, gold, copper, cobalt, iron, manganese, nickel, vanadium, zirconium and thereupon there is sprayed on a cohesive layer of a metal with a relatively low melting point such as, for example, zinc or tin
  • the ends of the capacitor are thermally charged only for such a short time that no damage to the dielectric is to be feared.
  • the non-cohesive particles "ice of the high melting metal act as embedding or anchoring elements for the contact layer subsequently applied to the ends of the wrapped capacitor layers.
  • the utilization of the invention has proved especially advantageous in thin foil capacitors, the dielectric of which consists of thin lacquer layers, in particular, of acetyl cellulose or polystyrene.
  • FIG. 1 is an elevational view of a capacitor embodying the invention, with a corner portion broken away;
  • FIG. 2 is an enlarged sectional view of the corner portion broken away in FIG. 1.
  • FIG. 1 of the drawing in which there is represented a wrapped electric capacitor, the ends of which, as illustrated in FIG. 2, are contacted by first spraying on individual particles 2 of a high-melting metal, for example copper, and subsequently spraying on an end contact layer 3 of a metal with low melting point, for example zinc. Onto the end contact layer 3- there are then soldered the terminal wires 4, by meansof which electrical connections of the capacitor are effected.
  • a high-melting metal for example copper
  • an end contact layer 3 of a metal with low melting point, for example zinc
  • An electrical capacitor with a dielectric of -a thermoplastic material, the plates of which consist of thin metal layers produced by metalization, and are contacted by end contact layers of a first-applied high melting metal and a superimposed layer of a low melting metal, characterized by the feature that the high melting metal, first applied, and directly contacting the capacitor structure is disposed thereon in the form of individual particles which do not form a cohesive layer, but cover essentially each winding layer at the ends of the capacitor, said low melting metal connecting said individual particles and anchoredthereby to the adjacent winding layers.
  • An electrical capacitor is defined in claim 1, wherein the particle size of such high-melting metal is within the range of 20 to 300' microns.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
US424151A 1964-01-10 1965-01-07 Electrical capacitor and method of making the same Expired - Lifetime US3284684A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES89011A DE1229191B (de) 1964-01-10 1964-01-10 Elektrischer Kondensator mit Stirnkontaktschichten

Publications (1)

Publication Number Publication Date
US3284684A true US3284684A (en) 1966-11-08

Family

ID=7514816

Family Applications (1)

Application Number Title Priority Date Filing Date
US424151A Expired - Lifetime US3284684A (en) 1964-01-10 1965-01-07 Electrical capacitor and method of making the same

Country Status (6)

Country Link
US (1) US3284684A (zh)
BE (1) BE658144A (zh)
CH (1) CH416837A (zh)
DE (1) DE1229191B (zh)
GB (1) GB1036996A (zh)
NL (1) NL6414068A (zh)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3465403A (en) * 1965-12-28 1969-09-09 Western Electric Co Method of establishing a testing procedure for self-healing capacitors
US3495311A (en) * 1966-11-16 1970-02-17 Int Standard Electric Corp Method of producing electrical capacitors with semiconductor layer
US3992761A (en) * 1974-11-22 1976-11-23 Trw Inc. Method of making multi-layer capacitors
US4226011A (en) * 1979-01-02 1980-10-07 Trw Inc. Manufacturing method for metalized plastic dielectric capacitors for improved current capabilities
US4604676A (en) * 1984-10-02 1986-08-05 Murata Manufacturing Co., Ltd. Ceramic capacitor
US4613518A (en) * 1984-04-16 1986-09-23 Sfe Technologies Monolithic capacitor edge termination
US4819115A (en) * 1988-01-28 1989-04-04 Westinghouse Electric Corp. End connections for wound capacitors and methods of making the same
US4849853A (en) * 1988-04-11 1989-07-18 Illinois Tool Works Inc. Capacitive structure
WO2014206306A1 (zh) 2013-06-28 2014-12-31 国源容开国际科技（北京）股份有限公司 二极管触点保护复合开关的控制电路及继电器的控制方法
US9666366B2 (en) 2002-04-15 2017-05-30 Avx Corporation Method of making multi-layer electronic components with plated terminations

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1614641C2 (de) * 1967-10-26 1974-07-11 Siemens Ag, 1000 Berlin Und 8000 Muenchen Elektrischer Kondensator mit Metallbelegungen aus Aluminium
NL6910723A (zh) * 1968-07-24 1970-01-27
DE1764741B1 (de) * 1968-07-29 1971-10-07 Siemens Ag Verfahren zum kapazitaetsabgleich elektrischer wickelkonden satoren
JPS56101732A (en) 1980-01-18 1981-08-14 Matsushita Electric Ind Co Ltd Metallized film condenser

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB712559A (en) * 1951-06-16 1954-07-28 Siemens Ag Improvements relating to electric condensers
US2921246A (en) * 1956-03-29 1960-01-12 Sprague Electric Co Electrical condensers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE946302C (de) * 1941-12-11 1956-07-26 Bosch Gmbh Robert Verfahren zur Herstellung elektrisch leitender Verbindungen zwischen aeusserst duennen Metallbelegungen elektrischer Kondensatoren und ihren drahtfoermigen Stromzufuehrungen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB712559A (en) * 1951-06-16 1954-07-28 Siemens Ag Improvements relating to electric condensers
US2921246A (en) * 1956-03-29 1960-01-12 Sprague Electric Co Electrical condensers

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3465403A (en) * 1965-12-28 1969-09-09 Western Electric Co Method of establishing a testing procedure for self-healing capacitors
US3495311A (en) * 1966-11-16 1970-02-17 Int Standard Electric Corp Method of producing electrical capacitors with semiconductor layer
US3992761A (en) * 1974-11-22 1976-11-23 Trw Inc. Method of making multi-layer capacitors
US4226011A (en) * 1979-01-02 1980-10-07 Trw Inc. Manufacturing method for metalized plastic dielectric capacitors for improved current capabilities
US4613518A (en) * 1984-04-16 1986-09-23 Sfe Technologies Monolithic capacitor edge termination
US4604676A (en) * 1984-10-02 1986-08-05 Murata Manufacturing Co., Ltd. Ceramic capacitor
US4819115A (en) * 1988-01-28 1989-04-04 Westinghouse Electric Corp. End connections for wound capacitors and methods of making the same
US4849853A (en) * 1988-04-11 1989-07-18 Illinois Tool Works Inc. Capacitive structure
US9666366B2 (en) 2002-04-15 2017-05-30 Avx Corporation Method of making multi-layer electronic components with plated terminations
US10020116B2 (en) 2002-04-15 2018-07-10 Avx Corporation Plated terminations
US10366835B2 (en) 2002-04-15 2019-07-30 Avx Corporation Plated terminations
US11195659B2 (en) 2002-04-15 2021-12-07 Avx Corporation Plated terminations
WO2014206306A1 (zh) 2013-06-28 2014-12-31 国源容开国际科技（北京）股份有限公司 二极管触点保护复合开关的控制电路及继电器的控制方法

Also Published As

Publication number Publication date
GB1036996A (en) 1966-07-20
NL6414068A (zh) 1965-07-12
CH416837A (de) 1966-07-15
BE658144A (zh)
DE1229191B (de) 1966-11-24

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