WO2017056988A1 - Élément de protection - Google Patents

Élément de protection Download PDF

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Publication number
WO2017056988A1
WO2017056988A1 PCT/JP2016/077079 JP2016077079W WO2017056988A1 WO 2017056988 A1 WO2017056988 A1 WO 2017056988A1 JP 2016077079 W JP2016077079 W JP 2016077079W WO 2017056988 A1 WO2017056988 A1 WO 2017056988A1
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WO
WIPO (PCT)
Prior art keywords
electrode
ptc element
terminal
main surface
ptc
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PCT/JP2016/077079
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English (en)
Japanese (ja)
Inventor
正明 岩井
剛 滝澤
Original Assignee
Ｌｉｔｔｅｌｆｕｓｅジャパン合同会社
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Publication of WO2017056988A1 publication Critical patent/WO2017056988A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-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
    • H01C7/02—Non-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

Definitions

  • the present invention relates to a protective element.
  • Protective element that cuts off the current that flows through the electronic or electrical equipment when an abnormality occurs in the electronic or electrical equipment, for example, when excessive current flows through such equipment or when such equipment becomes extremely hot.
  • Various protective elements such as bimetal elements, thermal fuse elements, PTC (positive temperature coefficient) elements (Patent Document 1), and the like are used.
  • a terminal may be attached to the PTC element.
  • the protection element 100 as shown in FIG. 10 has a terminal 102 connected to one electrode of the PTC element 101.
  • Such a protection element 100 is connected to a device to be protected by a terminal 102.
  • the present inventors may apply a force to the terminal 102 by connecting to another device, and pressure may be applied to the PTC element 101.
  • the expansion of the PTC element is hindered, and the original function cannot be exhibited. I noticed that there could be a malfunction.
  • an object of the present invention is to provide a PTC element that can be incorporated into an electronic or electric device without impairing the original function of the PTC element.
  • the present inventors have designed a protection element so that pressure from the terminal is not applied to the expansion region of the PTC element, that is, the region where current flows, and thus the load is applied to the terminal. Even in this case, it was considered that the original function of the PTC element would be obtained, and the present invention was achieved.
  • a layered PTC element having a first major surface and a second major surface; A first electrode located on the first major surface of the PTC element; A second electrode located on the second main surface of the PTC element, At least a portion of the first electrode and at least a portion of the second electrode are positioned to face each other via the PTC element; A PTC element in which a part of the second main surface of the PTC element is exposed; A first terminal electrically connected to the first electrode; A protective element comprising: A protective element is provided in which the first terminal is connected to a region of the first electrode that does not face the second electrode.
  • an electric device comprising the protective element described above.
  • a socket characterized by including the above-described protective element.
  • a socket body portion In a fourth aspect of the present invention, a socket body portion; The second electrode is in direct contact with the outer bottom surface of the socket body portion, or the second electrode is disposed through the conductive member and / or the exposed portion is disposed on the outer bottom surface of the socket body portion via the insulating sheet.
  • the protective element according to claim 1 arranged to be located at An insulating spacer located on the first terminal; A second terminal disposed on the insulating spacer; Insulating members arranged on the inner bottom surface of the socket main body, and these are fixed by bolts and nuts penetrating from the insulating member side to the second terminal side so as not to contact the protective element A socket is provided.
  • a layered PTC element having a first main surface and a second main surface, a first electrode located on the first main surface of the PTC element, and a second main surface of the PTC element And at least a portion of the first electrode and at least a portion of the second electrode are positioned to face each other with the PTC element therebetween, and a portion of the second main surface is A method for fixing a protective element, wherein the protective element is exposed, wherein the protective element is fixed to the exposed portion of the second main surface by applying pressure in the thickness direction of the PTC element.
  • the terminal attachment position is opposed to the second electrode of the first electrode.
  • FIG. 1 schematically shows a perspective view of a protective element 1 according to an embodiment of the present invention.
  • FIG. 2 schematically shows a cross-sectional view of the protective element 1 shown in FIG.
  • FIG. 3 schematically shows a cross-sectional view of the protection element 1 shown in FIG. 1 in a state of being attached to another member.
  • FIG. 4 schematically shows a cross-sectional view of a protection element 31 according to another embodiment of the present invention.
  • FIG. 5 schematically shows a plan view of the first electrode in still another embodiment of the present invention.
  • FIG. 6 schematically shows a cross-sectional view of a protection element 41 according to still another embodiment of the present invention.
  • FIG. 7 is a diagram schematically showing a state in which the protection element 41 shown in FIG. 6 is fixed.
  • FIG. 7 is a diagram schematically showing a state in which the protection element 41 shown in FIG. 6 is fixed.
  • FIG. 8 schematically shows a perspective view of the socket 51 of one embodiment of the present invention.
  • FIG. 9 schematically shows an exploded perspective view obtained when the socket 51 of FIG. 8 is temporarily disassembled into elements constituting the socket 51.
  • FIG. 10 schematically shows a perspective view of a conventional protection element 100.
  • FIG. 11 is a graph showing temperature-resistance characteristics of the sample of Example 1.
  • FIG. 12 is a graph showing temperature-resistance characteristics of the sample of Comparative Example 1.
  • a protection element 1 generally includes a PTC element 2 and a first terminal 4 as shown in FIG. 1 and FIG.
  • a layered and annular PTC element 10 having a first major surface 6 and a second major surface 8, an annular first electrode 12 located on the first major surface 6 of the PTC element 10, and a second of the PTC element 10 And an annular second electrode 14 located on the main surface 8.
  • a part of the first electrode 12 and the second electrode 14 are positioned so as to face each other with the PTC element 10 interposed therebetween.
  • the first electrode 12 covers the entire first main surface 6 of the PTC element.
  • the second electrode 14 covers a part of the second main surface 8 of the PTC element 10, and the remaining part 16 of the second main surface 8 of the PTC element 10 is exposed. That is, the second main surface has a portion not covered with the second electrode.
  • the first electrode 12, the PTC element 10, and the second electrode 14 are arranged so that the centers of the circular openings of the first electrode 12 and the second electrode 14 are located on the central axis of the opening of the PTC element 10. They are stacked in order. In other words, the circular openings of the first electrode 12, the PTC element 10, and the second electrode 14 exist concentrically.
  • the exposed portion 16 may not be covered with the second electrode, and may be covered with an insulating material such as a protective coating.
  • the first terminal 4 has an annular connection portion 18 that is electrically connected to the first electrode 12, and a terminal portion 20 that extends from the end of the connection portion 18 in a direction substantially perpendicular to the first main surface 6. .
  • the connecting portion 18 of the terminal 4 is electrically connected to the first electrode 12 on a region of the first electrode 12 that does not face the second electrode 14, that is, on a region that faces the exposed portion 16.
  • the respective circular openings of the connecting part 18 and the PTC element 10 exist concentrically.
  • the terminal part 20 has a function for connecting to another electric element.
  • the PTC element 10 used in the present invention is a polymer PTC element.
  • the polymer PTC element can be a well-known one, and generally includes a polymer (for example, polyethylene, polyvinylidene fluoride, etc.) in which a conductive filler (for example, carbon black, nickel alloy, etc.) is dispersed. It is obtained by extruding a conductive composition comprising:
  • the PTC element may be a so-called polymer PTC element having a thin layered electrode (eg, a foil electrode) on at least one of its major surfaces.
  • the thickness of the PTC element 10 is not particularly limited, but may be, for example, 0.01 mm to 5 mm, preferably 0.05 mm to 3 mm, more preferably 0.1 mm to 1 mm.
  • the outer diameter of the PTC element 10 (herein, the outer diameter means the diameter of the outer peripheral portion of the annular ring) is not particularly limited and can be appropriately selected depending on the application, for example, 5 mm to 100 mm, It can be 10 mm to 50 mm, or 15 mm to 25 mm.
  • the inner diameter of the PTC element 10 (the inner diameter means the diameter of the inner peripheral portion of the annular ring, that is, the diameter of the circular opening inside the annular ring) is not particularly limited, and is, for example, 1 mm to 10 mm, preferably It can be 3 mm to 8 mm.
  • the material constituting the first electrode 12 and the second electrode 14 may be the same or different.
  • the material constituting the first electrode and the second electrode is not particularly limited as long as it is a conductive material.
  • a conductive metal material specifically nickel, stainless steel, iron, copper, aluminum, tin, titanium, Or the alloy of those metals is mentioned.
  • the first electrode 12 and the second electrode 14 may be composed of, for example, two or more conductive material layers, for example, a conductive metal layer.
  • the outer diameter of the first electrode 12 is not particularly limited and can be appropriately selected depending on the application, and may be, for example, 5 mm to 100 mm, 10 mm to 50 mm, or 15 mm to 25 mm.
  • the inner diameter of the first electrode 12 is not particularly limited, and may be, for example, 1 mm to 10 mm, preferably 3 mm to 8 mm.
  • the outer diameter and inner diameter of the first electrode 12 are the same as the outer diameter and inner diameter of the PTC element 10.
  • the outer diameter of the second electrode 14 is not particularly limited and may be appropriately selected depending on the application, and may be, for example, 5 mm to 100 mm, 10 mm to 50 mm, or 15 mm to 25 mm.
  • the inner diameter of the second electrode 14 is not particularly limited, and may be, for example, 1.5 mm to 12 mm, preferably 3 mm to 10 mm, more preferably 5 mm to 10 mm.
  • the outer diameter of the second electrode 14 is the same as the outer diameter of the PTC element 10, and the inner diameter of the second electrode 14 is larger than the inner diameter of the PTC element 10. Accordingly, the second electrode 14 does not completely cover the second main surface 8 of the PTC element 10, and the inner edge portion of the second main surface is exposed.
  • a current flows between the first electrode 12 and the second electrode 14 via the PTC element 10 in a normal state. This current flows through the PTC element sandwiched between the first electrode and the second electrode, but does not substantially flow through the portion of the PTC element corresponding to the exposed portion 16.
  • the PTC element in the protective element of the present invention can be manufactured by separately manufacturing the PTC element, the first electrode and the second electrode, and bonding them together. Alternatively, an element in which both main surfaces of the PTC element are completely covered with the first electrode and the second electrode is obtained, and the electrode corresponding to the exposed portion is cut off by etching, sandblasting, cutter, or the like. Can be manufactured.
  • the material constituting the first terminal 4 is not particularly limited as long as it is conductive, and examples thereof include copper, iron, gold, aluminum, and alloys thereof.
  • the surface of the terminal may be processed by plating.
  • connection between the first terminal 4 and the first electrode 12 is not particularly limited, but is performed by a conductive adhesive, solder, welding, or the like.
  • the protective element 1 is connected to other electrical elements by the terminal portion 20 of the first terminal 4. By connecting to another electrical element, a force acts on the first terminal 4, and as a result, a pressure can act on the PTC element by the connection portion 18 of the first terminal 4.
  • the force from the first terminal 4 is the portion where the first electrode 12 and the second electrode 14 face each other, in other words.
  • the PTC element in the portion sandwiched between the first electrode and the second electrode does not substantially act.
  • the portion of the PTC element corresponding to the exposed portion 16 to which pressure is applied cannot expand sufficiently, but is sandwiched between the first electrode 12 and the second electrode 14 to which no pressure is applied.
  • the portion of the PTC element can expand sufficiently, and the resistance value of this portion is greatly increased.
  • the current path between the first electrode 12 and the second electrode 14 is substantially cut off, and the current flowing through the protection element 1 is cut off. In this case as well, a minute current can flow.
  • the width d 1 of the exposed portion 16 is greater than the thickness t of the PTC element 10 (FIG. 2).
  • the distance d 2 from the second electrode 14 to the first terminal connection 18 in the direction parallel to the main surface of the PTC element is larger than the thickness t of the PTC element (FIG. 2).
  • the pressure of the second electrode 14 and the PTC element acts It can prevent more reliably that an electric current flows between the parts which exist.
  • the protection element 1 can be fixed to another member by pressing the connecting portion 18 of the first terminal 4 in the thickness direction of the PTC element, for example, by caulking or tightening with a bolt, a screw, or the like. .
  • the pressure acts on a part of the PTC element by the fixing, the pressure acts on the portion corresponding to the connecting portion 18, that is, the portion corresponding to the exposed portion 16.
  • the fixed pressure does not substantially act on the portion sandwiched between the first electrode and the second electrode through which the current flows.
  • the portion sandwiched between the first electrode and the second electrode of the PTC element can sufficiently expand during operation, and the resistance value of this portion greatly increases.
  • the current path between the first electrode 12 and the second electrode 14 is substantially cut off, and the current flowing through the protection element 1 is cut off.
  • the protection element 1 of the present embodiment can be fixed to another member 24 by a fixing member 22 such as a bolt, but the place where the pressure from the fixing member 22 acts is a PTC element.
  • the portion corresponding to the exposed portion 16 of the first electrode 12 and the portion sandwiched between the first electrode 12 and the second electrode 14 does not substantially act. Therefore, the expansion of the portion through which the current of the PTC element flows is not hindered, and the deterioration of the performance of the PTC element due to fixing can be suppressed.
  • the protective element 31 further includes an insulating layer 32 on the exposed portion 16 of the protective element 1 described above.
  • the insulating layer 32 By providing the insulating layer 32 in this way, when the protective element 31 is fixed to the conductive member, the exposed portion 16 comes into contact with the conductive member and the portion sandwiched between the first electrode 12 and the conductive member. It is possible to prevent current from flowing through the PTC element.
  • the first electrode 12 comprises an annular inner first electrode 36 and outer first electrode 38 and one or more bridges that electrically connect them.
  • the unit 40 may be configured.
  • the first terminal is connected to the inner first electrode 36, and part or all of the outer first electrode 38 faces the second electrode.
  • the width of the bridging portion 40 is not particularly limited, but may be, for example, 0.5 mm to 3.0 mm, preferably 1.0 mm to 2.0 mm. By making the width of the bridging portion wider, the resistance value of the first electrode 12 can be made smaller. On the other hand, by reducing the width of the bridging portion, it is possible to further reduce the influence of the pressure acting on the inner first electrode 36 on the outer first electrode 38.
  • the number of the bridging portions 40 may be one or more, and may be two, three, four, six, or eight, for example. When there are a plurality of bridging portions 40, they are preferably arranged at an equal angle with respect to the center of the ring. By arranging the bridging portions at an equal angle, it is possible to prevent the current flowing through the PTC element from varying depending on the location, and the reliability of the PTC element is further improved.
  • the protection element 41 has a second terminal 42 in addition to the configuration of the protection element 1 described above.
  • the second terminal 42 is located on the same side as the first terminal 4, that is, on the first main surface side.
  • the second terminal 42 is provided on the first terminal 4 via an insulating spacer 44.
  • the second terminal 42 is electrically connected to the second electrode 14.
  • the 2nd terminal 42 and the 2nd electrode 14 should just be finally connected when it fixes to another member.
  • the protection element 41 is fixed to the conductive member 46 with a bolt 48, a nut 50, etc., so that the second electrode 14-conductive member 46-bolt 48 (nut 50) -second A current flow path may be secured in the order of the terminals 42.
  • the shape of the outer and inner contours (ie, openings) of the PTC element is circular, but these may be other shapes, for example, polygons such as triangles, squares, pentagons, ellipses, or The shape which combined these may be sufficient.
  • the opening part of a PTC element does not necessarily need to exist in the center part of a PTC element, for example, may exist in the peripheral part of a PTC element. Further, the opening is not an essential element and may not exist.
  • the opening of the PTC element in the above aspect may be a circle filled with the PTC element.
  • the entire second electrode 14 faces the first electrode 12, but at least a part of the second electrode 14 only needs to face the first electrode 12.
  • the protective element of the present invention can exhibit the original function of the PTC element even when it is attached to an electronic or electrical device by screws, caulking, or the like.
  • attachment using screws, caulking, etc. is easier to attach and detach than when welding, solder, adhesive, or the like is used.
  • the protection element of the present invention does not affect the function of the PTC element even when a force is applied when the terminal is connected to another electrical element. Therefore, it can be used as a protective element for various electronic or electric devices such as cigarette lighter sockets, secondary batteries, secondary battery cells, vacuum cleaners, refrigerators, and automobile parts.
  • the present invention provides an electric device, for example, a socket, comprising the above-described protection element of the present invention.
  • a socket 51 according to an embodiment of the present invention has a structure schematically shown in FIGS. Specifically, the socket 51 is Socket body 52, The second electrode 14 is electrically connected to the outer bottom surface 54 of the socket body 52 through the conductive member 56, and the exposed portion 16 is positioned on the outer bottom surface 54 of the socket body through the insulating sheet 58.
  • the protective element 1 disposed; An insulating spacer 64 positioned on the first terminal 4; A second terminal 66 disposed on the insulating spacer 64; And an insulating member 68 disposed on the inner bottom surface of the socket body 52, and these are inserted from the insulating member 68 side and penetrated to the second terminal 66 side so as not to contact the protective element 1 72 and a nut 74 located on the second terminal 66 side.
  • the second terminal 66- (nut 74) -bolt 72 is electrically connected to form a current path, and the second terminal 66 is connected to a positive electrode (or negative electrode) of a power source (not shown).
  • the bolt 72 functions as a positive electrode (or a negative electrode) of the socket 51 by being electrically connected.
  • the electrical connection between the second terminal 66 and the bolt 72 may be direct or via the nut 74.
  • the first terminal 4 -the first electrode 12 -the PTC element 10 -the second electrode 14 -the conductive member 56 -the socket body 52 are electrically connected to form a current path, and the first terminal 4 By connecting to the negative electrode (or positive electrode) of the power source, the socket main body 52 functions as the negative electrode terminal (or positive electrode terminal) of the socket 51.
  • the shape of the socket body 52 is not particularly limited, and can be changed as appropriate according to the application.
  • the socket body 52 also functions as a terminal, at least a part, preferably all of the socket body 52 is made of a conductive material.
  • the conductive material is not particularly limited, and may be, for example, nickel, stainless steel, iron, copper, aluminum, tin, titanium, or an alloy of these metals.
  • the insulating sheet 58 prevents the outer bottom surface 54 of the socket and the exposed portion 16 from contacting each other.
  • the insulating sheet 58 is not an essential element and may not be present.
  • the material constituting the insulating sheet 58 is not particularly limited as long as it is an insulating material, but is preferably an insulating resin.
  • the insulating resin is not particularly limited.
  • thermoplastic resin and thermosetting resin specifically, polyethylene, polypropylene, polycarbonate, fluorine resin, ABS (acrylonitrile-butadiene-styrene) resin, polycarbonate-ABS alloy.
  • Resin, PBT (polybutylene terephthalate) resin, resin such as elastomer may be used.
  • the conductive member 56 may be installed in order to increase the electrical contact between the outer bottom surface 54 of the socket and the second electrode of the protection element 1 or to match the height of the surface of the insulating sheet 58.
  • the conductive member 56 is not an essential element and may not exist.
  • the material constituting the conductive member 56 is made of a conductive material.
  • the conductive material is not particularly limited, and may be, for example, nickel, stainless steel, iron, copper, aluminum, tin, titanium, or an alloy of these metals.
  • the insulating spacer 64 is used to electrically separate the first terminal 4 and the second terminal 66.
  • the material constituting the insulating spacer 44 is not particularly limited as long as it is an insulating material, but is preferably an insulating resin.
  • the insulating resin is not particularly limited.
  • thermoplastic resin and thermosetting resin specifically, polyethylene, polypropylene, polycarbonate, fluorine resin, ABS (acrylonitrile-butadiene-styrene) resin, polycarbonate-ABS alloy.
  • Resin, PBT (polybutylene terephthalate) resin, resin such as elastomer may be used.
  • the insulating member 68 is used to electrically separate the bolt 72 and the socket main body 52.
  • the material constituting the insulating member 68 is not particularly limited as long as it is an insulating material, but is preferably an insulating resin.
  • the insulating resin is not particularly limited.
  • thermoplastic resin and thermosetting resin specifically, polyethylene, polypropylene, polycarbonate, fluorine resin, ABS (acrylonitrile-butadiene-styrene) resin, polycarbonate-ABS alloy.
  • Resin, PBT (polybutylene terephthalate) resin, resin such as elastomer may be used.
  • the shape of the insulating member 68 is not particularly limited as long as the function of electrically separating the bolt 72 and the socket main body 52 can be exhibited.
  • the bolt (screw) 72 is disposed so as not to contact the protection element 1 and the socket body 52, and is electrically connected to the second terminal 66 directly or via the nut 74.
  • the bolt 72 also functions as a terminal for connecting to another electrical element.
  • the bolt 72 also functions as a terminal, it is made of a conductive material.
  • the conductive material is not particularly limited, and may be, for example, nickel, stainless steel, iron, copper, aluminum, tin, titanium, or an alloy of these metals.
  • the material constituting the nut 74 is preferably a conductive material, and the same material as the bolt 72 is used.
  • the bolt 72 is inserted from the insulating member 68 side and fixed by the nut 74 on the second terminal 66 side.
  • the present invention is not limited to this.
  • the bolt is connected to the second terminal. It may be inserted from the side and fixed with a nut on the insulating member side.
  • the fixing of the protection element of the present invention is preferably performed by urging the connection portion 18 of the first terminal 4 of the protection element in the thickness direction of the PTC element.
  • the protection element of the present invention is connected to other electrical elements such as a power source by the first terminal 4 and the second terminal 66. Due to this fixing and connection, the pressure acting on the PTC element is limited to the portion corresponding to the exposed portion of the PTC element, so that the portion where the current of the PTC element flows can sufficiently expand in the event of an abnormality, Can be blocked.
  • the present invention provides a method for fixing or mounting the protective element of the present invention described above.
  • the present invention comprises a layered PTC element having a first main surface and a second main surface; A first electrode located on the first major surface of the PTC element; A second electrode located on the second main surface of the PTC element, At least a portion of the first electrode and at least a portion of the second electrode are positioned to face each other via the PTC element; A PTC element in which a part of the second main surface of the PTC element is exposed; A first terminal electrically connected to the first electrode; A protective element comprising: A method for fixing or mounting a protective element, wherein the first terminal is connected to a region of the first electrode that does not face the second electrode, wherein the first terminal is connected to the first electrode.
  • a method of fixing or attaching a connecting portion by urging pressure in a thickness direction of the PTC element Provided is a method of fixing or attaching a connecting portion by urging pressure in a thickness direction of the PTC element.
  • Example 1 Part of one electrode (2.85 mm from the inner edge) of a PTC element having electrodes on both sides of a PTC element having a thickness of 0.3 mm, an outer diameter of 21 mm, and an inner diameter of 8.3 mm was cut off with a cutter. The inner diameter of the electrode after cutting was 14 mm.
  • a terminal having a ring-shaped terminal connection portion having an outer diameter of 11.9 mm and an inner diameter of 5.7 mm is arranged so that the center of the terminal connection portion coincides with the center of the PTC element. Attachment and fixing with screws and nuts from both sides of the PTC element (pressure applied 8.2 kgf).
  • Comparative Example 1 A terminal having an annular terminal connection on one electrode of a PTC element having electrodes on both sides of a PTC element having a thickness of 0.3 mm, an outer diameter of 21 mm, and an inner diameter of 8.3 mm, and having the same shape as the PTC element And fixed with screws and nuts from both sides of the PTC element (pressure applied 8.2 kgf).
  • Test Example A current was passed between the electrodes of the sample of Example 1 and Comparative Example 1, and the temperature-resistance characteristics were measured. The results for the samples of Example 1 and Comparative Example 1 are shown in FIGS. 11 and 12, respectively.
  • the sample of Example 1 in which the electrode of the pressurization part was peeled off had a large increase in resistance during tripping as compared with the sample of Comparative Example 1 in which the electrode was present in the pressurization part. This is presumably because the sample of Comparative Example 1 has electrodes on both main surfaces of the pressurization portion, and even though the PTC element in this portion was about to expand, the expansion was inhibited by the pressurization. On the other hand, the sample of Example 1 has no electrode on one main surface of the pressurization portion, so that no current flows through this portion, and the influence of pressurization is small at the location where the current flows. It is considered that the same resistance value as that of the PTC element was obtained.
  • the protective element of the present invention can be attached to an electronic or electrical device by screws or caulking, and can be used as a protective element for a wide variety of electronic or electrical devices.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)

Abstract

La présente invention concerne un élément de protection qui comprend : un élément à coefficient de température positif qui est conçu pour comprendre une unité à coefficient de température positif en couches ayant une première surface principale et une seconde surface principale, une première électrode disposée sur la première surface principale de l'unité à coefficient de température positif, et une seconde électrode disposée sur la seconde surface principale de l'unité à coefficient de température positif, au moins une partie de la première électrode et au moins une partie de la seconde électrode se faisant face, l'unité à coefficient de température positif étant intercalée entre celles-ci, et une partie de la seconde surface principale de l'unité à coefficient de température positif étant exposée; et une première borne qui est électriquement connectée à la première électrode. Cet élément de protection est caractérisé en ce que la première borne est connectée à une région de la première électrode, ladite région ne faisant pas face à la seconde électrode. Cet élément de protection est apte à être incorporé dans un dispositif électronique ou électrique sans détériorer la fonction originale d'un élément à coefficient de température positif.
PCT/JP2016/077079 2015-09-28 2016-09-14 Élément de protection WO2017056988A1 (fr)

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JP2015-189666 2015-09-28
JP2015189666 2015-09-28

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6085802U (ja) * 1983-11-18 1985-06-13 松下電器産業株式会社 正特性サ−ミスタ装置
JPS63211701A (ja) * 1987-02-27 1988-09-02 日本メクトロン株式会社 Ｐｔｃ素子
JPH0638157U (ja) * 1992-10-29 1994-05-20 三洋電機株式会社 組電池
JP2000294403A (ja) * 1999-04-01 2000-10-20 Murata Mfg Co Ltd チップ型サーミスタ
JP2006005377A (ja) * 1993-09-15 2006-01-05 Raychem Corp 電気的なアッセンブリ
JP2014099431A (ja) * 2012-11-13 2014-05-29 Nobuhiko Ishida コンポジットｐｔｃサーミスタ部材

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6085802U (ja) * 1983-11-18 1985-06-13 松下電器産業株式会社 正特性サ−ミスタ装置
JPS63211701A (ja) * 1987-02-27 1988-09-02 日本メクトロン株式会社 Ｐｔｃ素子
JPH0638157U (ja) * 1992-10-29 1994-05-20 三洋電機株式会社 組電池
JP2006005377A (ja) * 1993-09-15 2006-01-05 Raychem Corp 電気的なアッセンブリ
JP2000294403A (ja) * 1999-04-01 2000-10-20 Murata Mfg Co Ltd チップ型サーミスタ
JP2014099431A (ja) * 2012-11-13 2014-05-29 Nobuhiko Ishida コンポジットｐｔｃサーミスタ部材

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