WO2018072292A1 - 电路保护组件 - Google Patents

电路保护组件 Download PDF

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Publication number
WO2018072292A1
WO2018072292A1 PCT/CN2016/110342 CN2016110342W WO2018072292A1 WO 2018072292 A1 WO2018072292 A1 WO 2018072292A1 CN 2016110342 W CN2016110342 W CN 2016110342W WO 2018072292 A1 WO2018072292 A1 WO 2018072292A1
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WO
WIPO (PCT)
Prior art keywords
circuit protection
copper foil
conductive
metal electrode
positive temperature
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PCT/CN2016/110342
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English (en)
French (fr)
Inventor
杨铨铨
刘玉堂
范荣
方勇
吴国臣
Original Assignee
上海长园维安电子线路保护有限公司
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Application filed by 上海长园维安电子线路保护有限公司 filed Critical 上海长园维安电子线路保护有限公司
Priority to US16/341,483 priority Critical patent/US10674599B2/en
Publication of WO2018072292A1 publication Critical patent/WO2018072292A1/zh

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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/0213Electrical arrangements not otherwise provided for
    • H05K1/0263High current adaptations, e.g. printed high current conductors or using auxiliary non-printed means; Fine and coarse circuit patterns on one circuit board
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/0213Electrical arrangements not otherwise provided for
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/02Details
    • H05K1/0213Electrical arrangements not otherwise provided for
    • H05K1/0254High voltage adaptations; Electrical insulation details; Overvoltage or electrostatic discharge protection ; Arrangements for regulating voltages or for using plural voltages
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C1/00Details
    • H01C1/14Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H01C1/1406Terminals or electrodes formed on resistive elements having positive temperature coefficient
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C1/00Details
    • H01C1/14Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H01C1/148Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors the terminals embracing or surrounding the resistive element
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C17/00Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/06Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base
    • H01C17/065Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thick film techniques, e.g. serigraphy
    • H01C17/06506Precursor compositions therefor, e.g. pastes, inks, glass frits
    • H01C17/06513Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the resistive component
    • H01C17/0652Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the resistive component containing carbon or carbides
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C17/00Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/06Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base
    • H01C17/065Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thick film techniques, e.g. serigraphy
    • H01C17/06506Precursor compositions therefor, e.g. pastes, inks, glass frits
    • H01C17/06573Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the permanent binder
    • H01C17/0658Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the permanent binder composed of inorganic material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C7/00Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
    • H01C7/027Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient consisting of conducting or semi-conducting material dispersed in a non-conductive organic material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C7/00Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/13Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material current responsive
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00Printed circuits
    • H05K1/18Printed circuits structurally associated with non-printed electric components
    • H05K1/182Printed circuits structurally associated with non-printed electric components associated with components mounted in the printed circuit board, e.g. insert mounted components [IMC]
    • H05K1/185Components encapsulated in the insulating substrate of the printed circuit or incorporated in internal layers of a multilayer circuit
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007Types of components
    • H05K2201/10196Variable component, e.g. variable resistor

Definitions

  • the present invention relates to a circuit protection assembly, and more particularly to a circuit protection assembly in which a protection element having a positive temperature effect of a resistor is built in a copper clad laminate to save installation space of the circuit protection component.
  • the polymer-based conductive composite material can maintain a low resistance value under normal temperature and has a characteristic of being sensitive to temperature changes, that is, when an overcurrent or an overheating phenomenon occurs in the circuit, its resistance instantaneously increases to a high resistance value.
  • the circuit is in an open state to achieve the purpose of protecting circuit components. Therefore, the protective element prepared from the polymer-based conductive composite can be connected to the circuit as a material of the current sensing element. Such materials have been widely used in electronic circuit protection components.
  • the conventional circuit protection components mounted on the surface of the circuit board are subject to more and more limited space. If further performance is required, the space limitation causes the performance to be improved and limited if the circuit protection component is built in the copper foil.
  • the inside of the laminate can greatly reduce the influence of the thickness of the circuit protection component, and bring a large design space to the area of the circuit protection component.
  • the circuit protection component is sealed inside the copper clad laminate, which greatly reduces the influence of the external environment on it, and thus has better environmental reliability.
  • the invention relates to a circuit protection component, which not only saves the installation space of the circuit protection component, but also has good environmental reliability.
  • the circuit protection component of the present invention comprises a protection element having a positive temperature resistance effect formed by tightly sandwiching a polymer-based conductive composite material layer between two metal electrode sheets, and further comprising:
  • the polymer-based conductive composite layer comprises at least one polymer substrate and at least one low resistivity
  • the conductive powder has a particle size distribution ranging from 0.1 ⁇ m to 50 ⁇ m.
  • the protection element is built in the copper-clad laminate, which can greatly reduce the influence of the thickness of the circuit protection component, and greatly reduces the influence of the external environment on the protection component, and has better environmental reliability.
  • the copper-clad laminate is a single-layer, double-layer or multi-layer board, and adopts a paper base, a glass fiber cloth base, a paper base and a glass fiber cloth composite substrate, and a ceramic base substrate on the substrate. Covering the adhesive layer with the upper and lower sides and copper foil complex.
  • the adhesive layer is made of phenolic resin, epoxy resin, polyester resin, bismaleimide modified triazine resin, polyimide resin, diphenylene ether resin, horse.
  • phenolic resin epoxy resin
  • polyester resin bismaleimide modified triazine resin
  • polyimide resin polyimide resin
  • diphenylene ether resin horse.
  • an anhydride imine-styrene resin a polycyanate resin
  • a polyolefin resin a polyolefin resin.
  • the polymer substrate is: polyethylene, chlorinated polyethylene, oxidized polyethylene, polyvinyl chloride, butadiene-acrylonitrile copolymer, acrylonitrile-butadiene-styrene copolymer , polystyrene, polycarbonate, polyamide, polyimide, polyethylene terephthalate, polybutylene terephthalate, polyphenylene ether, polyphenylene sulfide, polyoxymethylene, phenolic Resin, polytetrafluoroethylene, tetrafluoroethylene-hexafluoropropylene copolymer, polytrifluoroethylene, polyvinyl fluoride, maleic anhydride grafted polyethylene, polypropylene, polyvinylidene fluoride, epoxy resin, ethylene-vinyl acetate One of a copolymer, a polymethyl methacrylate, an ethylene-acrylic acid copolymer, and a mixture thereof.
  • the conductive powder is selected from the group consisting of carbon-based conductive powders, metal powders, conductive ceramic powders, and mixtures thereof.
  • the carbon-based conductive powder is carbon black, carbon fiber, carbon nanotube, graphite, graphene, and a mixture thereof.
  • the metal powder is one of copper, nickel, cobalt, iron, tungsten, tin, lead, silver, gold, platinum or an alloy thereof and a mixture thereof.
  • the conductive ceramic powder is a mixture of one or more of a metal nitride, a metal carbide, a metal boride, a metal silicide, and a layered structure ceramic powder.
  • the metal boride is lanthanum boride, lanthanum boride, vanadium boride, vanadium diboride, zirconium diboride, titanium diboride, lanthanum boride, lanthanum diboride, boron
  • the nitride is one of tantalum nitride, vanadium nitride, zirconium nitride, titanium nitride, tantalum nitride or tantalum nitride.
  • the carbide is one of tantalum carbide, vanadium carbide, zirconium carbide, titanium carbide, tantalum carbide, molybdenum carbide, tantalum carbide, tungsten carbide, tungsten carbide or trichromium.
  • the silicide is lanthanum silicide, lanthanum trisilicate, lanthanum silicate, vanadium disilicide, zirconium disilicide, titanium disilicide, lanthanum trisilide, lanthanum silicide, molybdenum disilicide, and One of silicon germanium, tungsten disilicide, silicon trioxide or chromium disilicate.
  • the conductive member serially connects the protection element having a positive temperature resistance effect to the protected circuit to form a conductive path.
  • the substrate of the conductive member is one of nickel, copper, aluminum, zinc, tin, antimony, indium, silver, gold, and an alloy thereof, and has a shape of a dot, a line, or a strip. , lamellar, columnar, full circular through hole, semicircular through hole, curved through hole or blind hole.
  • the outer surface of the copper clad laminate is covered with an insulating lacquer layer. Prevents other components from making electrical contact with external lines and can print an identifier on them.
  • the invention has the advantages that the circuit protection component is built in the copper-clad laminate, which can greatly reduce the influence of the thickness of the circuit protection component and bring a large design space to the area of the circuit protection component. Moreover, the circuit protection component is sealed inside the copper-clad laminate, which greatly reduces the influence of the external environment and has better environmental reliability.
  • Figure 1 is a schematic view of a protective element having a positive temperature effect of resistance of the present invention
  • Figure 2 is a schematic cross-sectional view showing the first embodiment of the present invention
  • Figure 3 is a schematic cross-sectional view showing a second embodiment of the present invention.
  • Figure 4 is a cross-sectional structural view showing a third embodiment of the present invention.
  • the polymer and conductive filler are compounded in a suitable formulation.
  • the temperature of the internal mixer was set to 180 degrees, the rotation speed was 30 rpm, and the polymer was firstly mixed for 3 minutes, then the conductive filler was added, and the mixture was further mixed for 15 minutes, and then discharged to obtain a conductive material having a positive temperature effect.
  • Composite material The temperature of the internal mixer was set to 180 degrees, the rotation speed was 30 rpm, and the polymer was firstly mixed for 3 minutes, then the conductive filler was added, and the mixture was further mixed for 15 minutes, and then discharged to obtain a conductive material having a positive temperature effect.
  • Composite material was
  • melt-mixed conductive composite material having a positive electric resistance effect is calendered by an open mill to obtain a conductive composite base layer 120 having a positive temperature effect of a resistance of 0.20 to 0.25 mm, as shown in FIG. Temperature-effect protection element 100.
  • the conductive composite base layer 120 having a positive temperature effect of resistance is placed between the lower metal electrode sheet 110a and the upper metal electrode sheet 110b as shown in FIG. 1, the rough surface of the two metal electrode sheets and the polymer having a positive temperature effect of resistance.
  • the base conductive composite base layer 120 is tightly bonded, and the above three layers are tightly bonded together by a thermocompression bonding method.
  • the thermocompression temperature was 180 ° C
  • the pressure was 12 MPa
  • the time was 10 minutes
  • a chip having a positive temperature effect of resistance is stamped or diced to form a protective element 100 having a positive temperature effect of a suitable resistance.
  • the polymer-based conductive composite layer comprises at least one polymer substrate and at least one low resistivity
  • the conductive powder has a particle size distribution ranging from 0.1 ⁇ m to 50 ⁇ m.
  • the substrate of the conductive member is one of nickel, copper, aluminum, zinc, tin, antimony, indium, silver, gold, and an alloy thereof, and has a shape of a dot, a line, a strip, a layer, or a column. , full circular through hole, semi-circular through hole, curved through hole or blind hole.
  • the circuit protection assembly comprises a copper clad laminate, a protective element with a positive temperature effect of the resistor, and a conductive member.
  • a protective element 200 having a positive temperature effect of resistance is placed in a substrate laminate 232 of a copper clad laminate having the same or similar structure and performance as the protective element 100, which has a positive temperature effect of resistance.
  • the polymer-based conductive composite base layer 220, the lower metal electrode sheet 210a and the upper metal electrode sheet 210b are formed; the semi-cured upper adhesive layer 233b and the lower adhesive layer 233a are thermocompression-bonded to the upper and lower surfaces of the laminate 232, and then The lower copper foil 250a and the upper copper foil 250b are respectively pressed onto the semi-cured layer underlying adhesive layer 233a and the upper adhesive layer 233b, and the upper metal electrode 210b is electrically connected to the upper copper foil 250b through the conductive member 240b;
  • the electrode sheet 210a is electrically connected to the lower copper foil 250a via the conductive member 240a, and the lower copper foil 250a and the upper copper foil 250b can be processed into external lines of various shapes.
  • the upper and lower surfaces of the circuit protection component are respectively covered with a layer of insulating varnish to form upper and lower insulating coatings 231b, 231a to prevent other components from being in electrical contact with external lines, and an identifier can be printed thereon
  • the circuit protection assembly includes a copper clad laminate, a protective element 300 having a positive temperature effect of electrical resistance, and a conductive member.
  • the protective element 300 having a positive temperature effect of resistance is placed in the substrate 332 of the copper clad laminate, the structure and performance of the protective element 300 being the same or similar to that of the protective element 100, the protective element 300 being electrically conductive by a polymer having a positive temperature effect of electrical resistance
  • the composite base layer 320, the lower metal electrode sheet 310a and the upper metal electrode sheet 310b are formed by thermocompression bonding the semi-cured upper adhesive layer 333b and the lower adhesive layer 333a on the upper and lower surfaces of the laminate 332, and then composite copper foil on the outer surface.
  • the copper foil is etched to form left and right copper foils 350a, 350b, and the upper metal electrode 310b is electrically connected to the right copper foil 350b through the conductive member 340b; the lower metal electrode sheet 310a is passed through the conductive member 340a and left
  • the copper foil 350a is electrically connected.
  • the left and right copper foils 350a, 350b can be processed into external lines of various shapes.
  • the upper and lower surfaces of the circuit protection component are respectively covered with a layer of insulating varnish to form upper and lower insulating coatings 331b, 331a to prevent other components from being in electrical contact with external lines, and an identifier can be printed thereon.
  • the circuit protection assembly includes a copper clad laminate, a protective element 400 having a positive temperature effect of electrical resistance, and a conductive member.
  • a protective element 400 having a positive temperature effect of resistance is placed in the laminate 432, the structure of the protective element 400 and The performance is the same as or similar to the protection element 100.
  • the protection element 400 is composed of a conductive composite base layer 420 having a positive temperature effect of resistance, a lower metal electrode sheet 410a and an upper metal electrode sheet 410b, and a semi-cured upper adhesive layer 433b and a lower glue.
  • the adhesive layer 433a is thermocompression bonded to the upper and lower surfaces of the laminate 432, and then the copper foil is respectively pressed onto the semi-cured layers 433a and 433b, and the copper foil is etched to form left and right upper copper foils 450a, 450b and a lower copper foil.
  • the upper metal electrode 410b is electrically connected to the upper right copper foil 450b through the conductive member 244b, and the upper right copper foil 450b and the lower copper foil 450c are electrically connected through the conductive member 340c; the lower metal electrode 410a is passed through the conductive member 440a and The upper left copper foil 450a is electrically connected, and the 450a, 450b, and 450c are external lines that can be processed into various shapes.
  • the upper and lower surfaces of the circuit protection component are respectively covered with a layer of insulating varnish 431b and 431a to prevent other components from being in electrical contact with the external circuit and to print an identifier thereon.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Thermistors And Varistors (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Laminated Bodies (AREA)

Abstract

公开了一种电路保护组件,包含由两个金属电极片(110a、110b)间紧密夹固的聚合物基导电复合材料层(120)所构成的具有电阻正温度效应的保护元件,一覆铜箔层压板,中间有通孔,保护元件设在通孔内,该覆铜箔层压板作为电路保护组件的基板上下表面设有胶粘层,将保护元件包覆在覆铜箔层压板与上下胶粘层构成的空间内;通过导电部件使具有电阻正温度效应的保护元件和被保护电路电气连接;其中,聚合物基导电复合材料层包含至少一种聚合物基材和至少一种电阻率低于100μΩ.cm的导电粉末,导电粉末粒径分布范围在0.1μΩ~50μΩ之间。该电路保护组件可以节省电路保护元件的安装空间,且具有良好的环境可靠性。

Description

电路保护组件 技术领域
本发明涉及一种电路保护组件,特别是一种将具有电阻正温度效应的保护元件内置于覆铜箔层压板中的电路保护组件,以节省电路保护元件的安装空间。
背景技术
聚合物基导电复合材料在正常温度下可维持较低的电阻值,具有对温度变化反应敏锐的特性,即当电路中发生过电流或过高温现象时,其电阻会瞬间增加到一高阻值,使电路处于断路状态,以达到保护电路元件的目的。因此可把聚合物基导电复合材料制备的保护元件连接到电路中,作为电流传感元件的材料。此类材料已被广泛应用于电子线路保护元器件上。
随着智能移动终端的发展,电子元器件大电流和小型化是发展的趋势。然而,传统的装配在线路板表面的电路保护元件受到越来越有限的空间限制,如需进一步提升性能时,空间的限制致使其性能提升及其有限,如果将电路保护元件内置于覆铜箔层压板内部,既可以大幅减小电路保护元件厚度带来的影响,又给电路保护元件的面积带来较大的可设计空间。并且,电路保护元件被密封在覆铜箔层压板内部,很大程度上降低了外界环境对其的影响,因此具有较好的环境可靠性。
发明内容
本发明涉及一种电路保护组件,不但可以节省电路保护元件的安装空间,且具有良好的环境可靠性。
本发明的电路保护组件,包含由两个金属电极片间紧密夹固聚合物基导电复合材料层构成的具有电阻正温度效应的保护元件,还包括:
(a)覆铜箔层压板,中间有保护元件容置空间,所述的具有电阻正温度效应的保护元件设在容置空间内;
(b)导电部件,使所述具有电阻正温度效应的保护元件和被保护电路电气连接;其中,所述聚合物基导电复合材料层包含至少一种聚合物基材和至少一种电阻率低于100μΩ.cm的导电粉末,所述导电粉末粒径分布范围在0.1μm~50μm之间。
将保护元件内置于覆铜箔层压板内部,既可以大幅减小电路保护元件厚度带来的影响,并且,很大程度上降低了外界环境对保护元件的影响,具有较好的环境可靠性。
在上述方案基础上,所述覆铜箔层压板按结构是单层、双层或多层板,采用纸基、玻璃纤维布基、纸基和玻璃纤维布复合基板、陶瓷基基板,在基板上下覆盖胶粘层后与铜箔 复合。
在上述方案基础上,所述的胶粘层采用酚醛树脂、环氧树脂、聚酯树脂、双马来酰亚胺改性三嗪树脂、聚酰亚胺树脂、二亚苯基醚树脂、马来酸酐亚胺-苯乙烯树脂、聚氰酸酯树脂、聚烯烃树脂中的一种或其组合。
在上述方案基础上,所述聚合物基材为:聚乙烯、氯化聚乙烯、氧化聚乙烯、聚氯乙烯、丁二烯-丙烯腈共聚物、丙烯腈-丁二烯-苯乙烯共聚物、聚苯乙烯、聚碳酸酯、聚酰胺、聚酰亚胺、聚对苯二甲酸乙二醇酯、聚对苯二甲酸丁二醇酯、聚苯醚、聚苯硫醚、聚甲醛、酚醛树脂、聚四氟乙烯、四氟乙烯-六氟丙烯共聚物、聚三氟乙烯、聚氟乙烯、马来酸酐接枝聚乙烯、聚丙烯、聚偏氟乙烯、环氧树脂、乙烯-醋酸乙烯共聚物、聚甲基丙烯酸甲酯、乙烯-丙烯酸共聚物中的一种及其混合物。
在上述方案基础上,所述导电粉末选自:碳系导电粉末、金属粉末、导电陶瓷粉末及它们的混合物。
在上述方案基础上,所述碳系导电粉末为:碳黑、碳纤维、碳纳米管、石墨、石墨烯及它们的混合物。
在上述方案基础上,所述金属粉末为:铜、镍、钴、铁、钨、锡、铅、银、金、铂或其合金中的一种及其混合物。
在上述方案基础上,所述导电陶瓷粉末为:金属氮化物、金属碳化物、金属硼化物、金属硅化物、层状结构陶瓷粉之中的一种或几种的混合物。
在上述方案基础上,所述金属硼化物为硼化钽、二硼化钽、硼化钒、二硼化钒、二硼化锆、二硼化钛、硼化铌、二硼化铌、硼化二钼、五硼化二钼、二硼化铪、硼化二钨、硼化钨、硼化二铬、硼化铬、二硼化铬或三硼化五铬之中的一种。
在上述方案基础上,所述氮化物为氮化钽、氮化钒、氮化锆、氮化钛、氮化铌或氮化铪中的一种。
在上述方案基础上,所述碳化物为碳化钽、碳化钒、碳化锆、碳化钛、碳化铌、碳化二钼、碳化铪、碳化钨、碳化二钨或二碳化三铬之中的一种。
在上述方案基础上,所述硅化物为二硅化钽、三硅化五钽、硅化三钒、二硅化钒、二硅化锆、二硅化钛、三硅化五钛、二硅化铌、二硅化钼、二硅化铪、二硅化钨、硅化三铬或二硅化铬之中的一种。
在上述方案基础上,所述层状结构陶瓷粉为Sc2InC、Ti2AlC、Ti2GaC、Ti2InC、Ti2TlC、V2AlC、V2GaC、Cr2GaC、Ti2AlN、Ti2GaN、Ti2InN、V2GaN、Cr2GaN、Ti2GeC、Ti2SnC、Ti2PbC、 V2GeC、Cr2SiC、Cr2GeC、V2PC、V2AsC、Ti2SC、Zr2InC、Zr2TlC、Nb2AlC、Nb2GaC、Nb2InC、Mo2GaC、Zr2InN、Zr2TlN、Zr2SnC、Zr2PbC、Nb2SnC、Nb2PC、Nb2AsC、Zr2SC、Nb2SC、Hf2SC、Hf2InC、Hf2TlC、Ta2AlC、Ta2GaC、Hf2SnC、Hf2PbC、Hf2SnN、Ti3AlC2、V3AlC2、Ta3AlC2、Ti3SiC2、Ti3GeC2、Ti3SnC2、Ti4AlN3、V4AlC3、Ti4GaC3、Nb4AlN3、Ta4AlC3、Ti4SiC3、Ti4GeC3之中的一种及其混合物。
在上述方案基础上,所述导电部件将所述具有电阻正温度效应的保护元件串接于被保护电路中形成导电通路。
在上述方案基础上,所述导电部件的基材为镍、铜、铝、锌、锡、铋、铟、银、金中的一种及它们的合金,形状为点状、线状、带状、层片状、柱状、全圆通孔、半圆通孔、弧形通孔或盲孔。
在上述方案基础上,在覆铜箔层压板外表面覆盖绝缘漆层。防止其它元件与外部线路电气接触,并可在其上印刷标识符。
本发明优越性在于:将电路保护元件内置于覆铜箔层压板内部,既可以大幅减小电路保护元件厚度带来的影响,又给电路保护元件的面积带来较大的可设计空间。并且,电路保护元件被密封在覆铜箔层压板内部,很大程度上降低了外界环境对其的影响,具有较好的环境可靠性。
附图说明
图1本发明的具有电阻正温度效应的保护元件示意图;
图2本发明第1实施例的剖面结构示意图;
图3本发明第2实施例的剖面结构示意图;
图4本发明第3实施例的剖面结构示意图;
图中标号说明:
100、200、300、400——保护元件;
110a、210a、310a、410a——下金属电极片;
110b、210b、310b、410b——上金属电极片;
120、220、320、420——聚合物基导电复合材料层;
231a、331a、431a——下绝缘涂层;
231b、331b、431b——上绝缘涂层;
232、332、432——层压板;
233a、333a、433a——下胶粘层;
233b、333b、433b——上胶粘层;
240a、340a、440a——导电部件一;
240b、340b、440b——导电部件二;
440c——导电部件三;
250a——下铜箔;
250b——上铜箔;
图3中,
350a、350b——左、右铜箔;
图4中,
450a、450b——左、右上铜箔;
450c——下铜箔。
具体实施方式
一、材料准备
制作具有电阻正温度效应的电路保护元件:
将聚合物、导电填料按合适的配方配料。将密炼机温度设定为180度,转速为30转/分钟,先加入聚合物密炼3分钟后,然后加入导电填料,继续密炼15分钟后出料,得到具有电阻正温度效应的导电复合材料。
将上述熔融混合好的具有电阻正温度效应的导电复合材料通过开炼机压延,得到厚度为0.20-0.25毫米的具有电阻正温度效应的导电复合材料基层120,如图1所示的具有电阻正温度效应的保护元件100。
将具有电阻正温度效应的导电复合材料基层120,按图1所示置于下金属电极片110a和上金属电极片110b之间,二金属电极片的粗糙面与具有电阻正温度效应的聚合物基导电复合材料基层120紧密结合,通过热压合的方法将上述三层叠好紧密结合在一起。热压合的温度为180摄氏度,压力为12兆帕,时间为10分钟,最后在冷压机上冷压10分钟,得到具有电阻正温度效应的芯片。
将具有电阻正温度效应的芯片经过冲压或划片,制成合适大小的具有电阻正温度效应的保护元件100。
二、电路保护组件制作:
(a)覆铜箔层压板,中间有保护元件容置空间,将上述具有电阻正温度效应的保护元件设在容置空间内;
(b)导电部件,使所述具有电阻正温度效应的保护元件和被保护电路电气连接;其中,所述聚合物基导电复合材料层包含至少一种聚合物基材和至少一种电阻率低于100μΩ.cm的导电粉末,所述导电粉末粒径分布范围在0.1μm~50μm之间。
所述导电部件的基材为镍、铜、铝、锌、锡、铋、铟、银、金中的一种及它们的合金,形状为点状、线状、带状、层片状、柱状、全圆通孔、半圆通孔、弧形通孔或盲孔。
实施例1
如图2所示:电路保护组件,包含覆铜箔层压板、具有电阻正温度效应的保护元件和导电部件。将具有电阻正温度效应的保护元件200置于覆铜箔层压板的基材层压板232中,保护元件200结构和性能与保护元件100相同或相近,该保护元件200由具有电阻正温度效应的聚合物基导电复合材料基层220、下金属电极片210a和上金属电极片210b组成;将半固化的上胶粘层233b和下胶粘层233a热压合在层压板232的上下表面,然后将下铜箔250a和上铜箔250b分别压合在半固化层下胶粘层233a和上胶粘层233b上,将上金属电极210b通过导电部件二240b与上铜箔250b电气连接;将下金属电极片210a通过导电部件一240a与下铜箔250a电气连接,下铜箔250a和上铜箔250b可以加工成各种形状的外部线路。在电路保护组件的上下表面分别覆盖一层绝缘漆,形成上、下绝缘涂层231b、231a,防止其它元件与外部线路电气接触,并可在其上印刷标识符。
实施例2
如图3所示,电路保护组件,包含覆铜箔层压板、具有电阻正温度效应的保护元件300和导电部件。将具有电阻正温度效应的保护元件300置于覆铜箔层压板的基材332中,保护元件300结构和性能与保护元件100相同或相近,保护元件300由具有电阻正温度效应的聚合物导电复合材料基层320、下金属电极片310a和上金属电极片310b组成,将半固化的上胶粘层333b和下胶粘层333a热压合在层压板332的上下表面,然后在外表面复合铜箔,对铜箔进行进行刻蚀,形成左、右铜箔350a、350b,将上金属电极310b通过导电部件二340b与右铜箔350b电气连接;将下金属电极片310a通过导电部件一340a与左铜箔350a电气连接。左、右铜箔350a、350b可以加工成各种形状的外部线路。在电路保护组件的上下表面分别覆盖一层绝缘漆,形成上、下绝缘涂层331b、331a,防止其它元件与外部线路电气接触,并可在其上印刷标识符。
实施例3
如图4所示,电路保护组件,包含覆铜箔层压板、具有电阻正温度效应的保护元件400和导电部件。将具有电阻正温度效应的保护元件400置于层压板432中,保护元件400结构和 性能与保护元件100相同或相近,保护元件400由具有电阻正温度效应的导电复合材料基层420、下金属电极片410a和上金属电极片410b组成,将半固化的上胶粘层433b和下胶粘层433a热压合在层压板432的上下表面,然后将铜箔分别压合在半固化层433a和433b上,对铜箔进行刻蚀,形成左、右上铜箔450a、450b和下铜箔450c,将上金属电极410b通过导电部件二440b与右上铜箔450b电气连接,再将右上铜箔450b和下铜箔450c通过导电部件三440c电气连接;将下金属电极410a通过导电部件一440a与左上铜箔450a电气连接,450a、450b和450c为可以加工成各种形状的外部线路。在电路保护组件的上下表面分别覆盖一层绝缘漆431b和431a,防止其它元件与外部线路电气接触,并可在其上印刷标识符。
本发明的内容和特点已揭示如上,然而前面叙述的本发明仅仅简要地或只涉及本发明的特定部分,本发明的特征可能比在此公开的内容涉及的更多。因此,本发明的保护范围应不限于实施例所揭示的内容,而应该包括在不同部分中所体现的所有内容的组合,以及各种不背离本发明的替换和修饰,并为本发明的权利要求书所涵盖。

Claims (13)

  1. 一种电路保护组件,包含由两个金属电极片间紧密夹固聚合物基导电复合材料层构成的具有电阻正温度效应的保护元件,其特征在于,还包括:
    (a)覆铜箔层压板,中间有保护元件容置空间,所述的具有电阻正温度效应的保护元件设在容置空间内;
    (b)导电部件,使所述具有电阻正温度效应的保护元件和被保护电路电气连接;其中,所述聚合物基导电复合材料层包含至少一种聚合物基材和至少一种电阻率低于100μΩ.cm的导电粉末,所述导电粉末粒径分布范围在0.1μm~50μm之间。
  2. 根据权利要求1所述的电路保护组件,其特征在于,所述覆铜箔层压板按结构是单层、双层或多层板,采用纸基、玻璃纤维布基、纸基和玻璃纤维布复合基板、陶瓷基基板,在基板上下经胶粘层与铜箔复合。
  3. 根据权利要求1或2所述的电路保护组件,其特征在于;所述的胶粘层采用酚醛树脂、环氧树脂、聚酯树脂、双马来酰亚胺改性三嗪树脂、聚酰亚胺树脂、二亚苯基醚树脂、马来酸酐亚胺-苯乙烯树脂、聚氰酸酯树脂、聚烯烃树脂中的一种或其组合。
  4. 根据权利要求1所述的电路保护组件,其特征在于所述聚合物基材为:聚乙烯、氯化聚乙烯、氧化聚乙烯、聚氯乙烯、丁二烯-丙烯腈共聚物、丙烯腈-丁二烯-苯乙烯共聚物、聚苯乙烯、聚碳酸酯、聚酰胺、聚酰亚胺、聚对苯二甲酸乙二醇酯、聚对苯二甲酸丁二醇酯、聚苯醚、聚苯硫醚、聚甲醛、酚醛树脂、聚四氟乙烯、四氟乙烯-六氟丙烯共聚物、聚三氟乙烯、聚氟乙烯、马来酸酐接枝聚乙烯、聚丙烯、聚偏氟乙烯、环氧树脂、乙烯-醋酸乙烯共聚物、聚甲基丙烯酸甲酯、乙烯-丙烯酸共聚物中的一种及其混合物。
  5. 根据权利要求1所述的电路保护组件,其特征在于,所述导电粉末选自:碳系导电粉末、金属粉末、导电陶瓷粉末及它们的混合物。
  6. 根据权利要求5所述的电路保护组件,其特征在于所述导电陶瓷粉末为:金属氮化物、金属碳化物、金属硼化物、金属硅化物、层状结构陶瓷粉之中的一种或几种的混合物。
  7. 根据权利要求6所述的电路保护组件,其特征在于,所述层状结构陶瓷 粉为Sc2InC、Ti2AlC、Ti2GaC、Ti2InC、Ti2TlC、V2AlC、V2GaC、Cr2GaC、Ti2AlN、Ti2GaN、Ti2InN、V2GaN、Cr2GaN、Ti2GeC、Ti2SnC、Ti2PbC、V2GeC、Cr2SiC、Cr2GeC、V2PC、V2AsC、Ti2SC、Zr2InC、Zr2TlC、Nb2AlC、Nb2GaC、Nb2InC、Mo2GaC、Zr2InN、Zr2TlN、Zr2SnC、Zr2PbC、Nb2SnC、Nb2PC、Nb2AsC、Zr2SC、Nb2SC、Hf2SC、Hf2InC、Hf2TlC、Ta2AlC、Ta2GaC、Hf2SnC、Hf2PbC、Hf2SnN、Ti3AlC2、V3AlC2、Ta3AlC2、Ti3SiC2、Ti3GeC2、Ti3SnC2、Ti4AlN3、V4AlC3、Ti4GaC3、Nb4AlN3、Ta4AlC3、Ti4SiC3、Ti4GeC3之中的一种及其混合物。
  8. 根据权利要求1所述的电路保护组件,其特征在于,所述导电部件将所述具有电阻正温度效应的保护元件串接于被保护电路中形成导电通路。
  9. 根据权利要求8所述的电路保护组件,其特征在于,所述导电部件的基材为镍、铜、铝、锌、锡、铋、铟、银、金中的一种及它们的合金,形状为点状、线状、带状、层片状、柱状、全圆通孔、半圆通孔、弧形通孔或盲孔。
  10. 根据权利要求1或2所述的电路保护组件,其特征在于,在覆铜箔层压板外表面覆盖绝缘漆层。
  11. 根据权利要求10所述的电路保护组件,其特征在于,将具有电阻正温度效应的保护元件置于覆铜箔层压板的基材层压板容中,该保护元件由具有电阻正温度效应的聚合物基导电复合材料基层、下金属电极片和上金属电极片组成;将半固化的上胶粘层和下胶粘层热压合在层压板的上下表面,然后将上下铜箔分别压合在半固化层上,将上金属电极通过导电部件二与上铜箔电气连接;将下金属电极片通过导电部件一与下铜箔电气连接,下铜箔和上铜箔可以加工成各种形状的外部线路。
  12. 根据权利要求10所述的电路保护组件,其特征在于,将具有电阻正温度效应的保护元件置于覆铜箔层压板的基材中,该保护元件由具有电阻正温度效应的聚合物导电复合材料基层、下金属电极片和上金属电极片组成,将半固化的上胶粘层和下胶粘层热压合在层压板的上下表面,然后在外表面复合铜箔,对铜箔进行进行刻蚀,形成左、右铜箔,将上金属电极通过导电部件二与右铜箔电气连接;将下金属电极片通过导电部件一与左铜箔电气连接。
  13. 根据权利要求10所述的电路保护组件,其特征在于,将具有电阻正温度效应的保护元件置于层压板中,该保护元件由具有电阻正温度效应的导电复合材料基层、下金属电极片和上金属电极片组成,将半固化的上胶粘层和下胶粘层热 压合在层压板上下表面,然后将铜箔分别压合在半固化层上,对铜箔进行刻蚀,形成左、右上铜箔和下铜箔,将上金属电极通过导电部件二与右上铜箔电气连接,再将右上铜箔和下铜箔通过导电部件三电气连接;将下金属电极通过导电部件一与左上铜箔电气连接。
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