CN105336995B - Short-circuit component - Google Patents

Short-circuit component Download PDF

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Publication number
CN105336995B
CN105336995B CN201510469767.3A CN201510469767A CN105336995B CN 105336995 B CN105336995 B CN 105336995B CN 201510469767 A CN201510469767 A CN 201510469767A CN 105336995 B CN105336995 B CN 105336995B
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electrode
short
heater
fusible conductor
circuit
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CN105336995A (en
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米田吉弘
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Dexerials Corp
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Dexerials Corp
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuses (AREA)
  • Combustion & Propulsion (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)

Abstract

The short-circuit component of reliable ground short circuit between making short-circuiting electrode according to the fusing of fusible conductor is provided.Have: the 1st electrode (11)；The 2nd electrode (12) being adjacently arranged with the 1st electrode (11)；The 1st electrode (11) is supported on and by fusing to agglomerate throughout between the 1st, the 2nd electrode (11,12), to make the 1st fusible conductor (13) of the 1st, the 2nd electrode (11,12) short circuit；And the heater (14) of the 1st fusible conductor (13) of heating, 12 opposite side of the 1st fusible conductor (13) 2 electrode of Xiang Yu are highlightedly supported.

Description

Short-circuit component
Technical field
The present invention relates to the use of electric signal makes the power supply line of open state or the short circuit member of signal wire physics and electrical short Part.
Background technique
The charged most of secondary cell that can be recycled, is processed to battery pack and is supplied to user.Especially In the high lithium ion secondary battery of gravimetric energy density, in order to ensure user and the safety of electronic equipment, generally in battery pack Many protection circuits of built-in additives for overcharge protection, over etc. have the output that battery pack is truncated in the case where set Function.
In this protection element, there is using the FET switch for being built in battery pack the conduction and cut-off (ON/ exported OFF), to carry out the additives for overcharge protection of battery pack or the element of over movement.However, for some reason and FET is opened Pass be short-circuited destruction in the case where, be applied lightning surge etc. and in the case where flowing through instantaneous high current or because of battery unit Service life and output voltage reduce extremely or export excessive abnormal voltage or battery unit instead respectively voltage deviation becomes larger In the case where, battery pack, electronic equipment must all be protected, and to avoid accident on fire etc..Therefore, in order in such energy Also the output of battery unit is safely truncated in any abnormality enough assumed, using by having by from external signal The protection element that the fuse element of the function in chopping current path is constituted.
As the protection element of the protection circuit towards lithium ion secondary battery etc., as described in Patent Document 1, Fusible conductor is connected between the 1st electrode, heater extraction electrode, the 2nd electrode on current path, to form electric current road A part of diameter makes fusible conductor on the current path carry out spontaneous heating using overcurrent and fuse, or by being located at Heater inside protection element is powered, is allowed to generate heat to fuse.In such protection element, by making the liquid of fusing Fusible conductor concentrate on and be connected in the conductor layer of heater, make separation and chopping current path between the 1st, the 2nd electrode.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2010-003665 bulletin
Patent document 2: Japanese Unexamined Patent Publication 2004-185960 bulletin
Patent document 3: Japanese Unexamined Patent Publication 2012-003878 bulletin.
Summary of the invention
Subject to be solved by the invention
In addition, in recent years, using the HEV(hybrid electric vehicle of battery and motor: Hybrid Electric Vehicle), EV(electric car: Electric Vehicle) obtain rapid proliferation.As the power source of HEV, EV, for energy density and defeated Characteristic uses lithium ion secondary battery more out.Such as in mobile applications, high voltage, high current are needed.Therefore, developing can hold By high voltage, the special cell of high current, but because manufacturing cost on problem and in most cases, pass through series, parallel Multiple battery units are connected, to ensure required voltage and current using GU Generic Unit.
Here, driving force sharply declines, emergency stop stops situation dangerous instead in automobile in high-speed mobile etc., seek Assuming that very when battery management.For example, can also supply and be repaired for being moved to when the exception of battery system occurring under steam Driving force or hazard warning light, the driving force of idle call until factory or harbor are ideal to avoiding for danger 's.
However, in the battery pack that multiple battery cells in series as described in Patent Document 1 connect, such as only in charge-discharge circuit It, can if a part in battery unit is abnormal that protection element is made to work in the case that protection element is set on diameter The charge and discharge path of battery pack entirety is truncated, then can not supply electric power.
Therefore, it in order to only exclude the abnormal battery unit in the battery pack being made of multiple units, and effectively applies flexibly just Normal battery unit proposes the short-circuit component for being capable of forming the bypass path only bypassed to abnormal battery unit.
One structural example of short-circuit component is shown in Figure 29, the circuit for being applicable in the battery circuit of short-circuit component is shown in Figure 30 Figure.The short-circuit component 100 is as shown in Figure 29 and Figure 30, comprising: it is connected in parallel on charge and discharge path with battery unit 101, and And in the open the 1st, the 2nd short-circuiting electrode 102,103 when normal；Make the 1st, the 2nd short-circuiting electrode 102,103 by fusing Between short-circuit two fusible conductors 104a, 104b；And it is connected in series with fusible conductor 104a and makes fusible conductor 104a, 104b The heater 105 of fusing.
Short-circuit component 100 be formed on the insulating substrate 110 of ceramic substrate etc. heater 105 and with heater 105 The external connecting electrode 111 of one end connection.In addition, short-circuit component 100 across glass etc. insulating layer 112 on heater 105 Be formed with the 113, the 1st, the 2nd short-circuiting electrode 102,103 of heater electrode being connect with the other end of heater 105 and with the 1st, 2nd short-circuiting electrode 102,103 supports the 1st, the 2nd of fusible conductor 104a, 104b to support electrode 114,115 together.
1st support electrode 114 is connect with the heater electrode 113 exposed on insulating layer 112, in addition, with the 1st short circuit electricity Pole 102 is adjacent.1st support electrode 114 and the 1st short-circuiting electrode 102 support the two sides of a fusible conductor 104a together.Equally Ground, the 2nd support electrode 115 and the 2nd short-circuiting electrode 103 are adjacent, support another fusible conductor together with the 2nd short-circuiting electrode 103 The two sides of 104b.
In short-circuit component 100, constitutes from external connecting electrode 111 via heater 105, heater electrode 113, fusible leads Body 104a and reach the 1st short-circuiting electrode 102, supply path to heater 105.
Heater 105 flows through due to spontaneous heating because of electric current via the supply path, and fusible conductor 104a, 104b utilize the heat (Joule heat) fusing.As shown in figure 30, heater 105 via external connecting electrode 111 and FET etc. current controling element 106 Connection.Current controling element 106 is controlled in this way, that is, power supply of the limitation to heater 105 when battery unit 101 is normal, Electric current is set to flow into heater 105 via charge-discharge circuit diameter when abnormal.
Using the battery circuit of short-circuit component 100, if detecting abnormal voltage etc. in battery unit 101, pass through protection The battery unit 101 is truncated in element 107 from charge and discharge path, and current controling element 106 is made to work, and electric current is made to flow into hair Hot body 105.Fusible conductor 104a, 104b melt due to the heat of heater 105 as a result,.Fusible conductor 104a, 104b bias are to phase To being melted behind the 1st of large area, the 2nd short-circuiting electrode 102,103 sides, fusing conductor between ニ short-circuiting electrode 102,103 and Cohesion combines.Therefore, short-circuiting electrode 102,103 is by the fusing conductor short circuit of fusible conductor 104a, 104b, and thereby, it is possible to shapes The current path that battery pair unit 101 is bypassed.
In addition, in short-circuit component 100, the 1st due to fusible conductor 104a is mobile to 102 side of the 1st short-circuiting electrode and melts It supports and is opened between electrode 114 and the 1st short-circuiting electrode 102, the supply path to heater 105 is thus truncated, therefore stop fever The fever of body 105.
Here, in this short-circuit component 100, it is desirable that by the fusing of fusible conductor 104a, 104b make short-circuiting electrode 102, Reliable ground short circuit between 103.That is, short-circuit component 100 is by making the fusing conductor of fusible conductor 104a, 104b throughout short-circuiting electrode 102, agglomerate between 103 and keep short-circuiting electrode 102,103 short-circuit, it is desirable that make more to melt conductor agglomerate in short-circuiting electrode 102, On 103.
However, if in order to agglomerate more fusing conductor on short-circuiting electrode 102,103, and make short-circuiting electrode 102, 103 areas then have such as when short-circuit component 100 is installed in reflux relatively larger than the 1st, the 2nd support electrode 114,115, fusible The worry that conductor 104a, 104b are separated and moved on short-circuiting electrode 102,103 from the 1st, the 2nd support electrode 114,115.Cause This, short-circuit component 100 is truncated the supply path of heater 105 before having work, and is short-circuited between short-circuiting electrode 102,103 Incipient short risk.
In addition, there are also fusible conductors if reducing the area of short-circuiting electrode 102,103 in order to reduce incipient short risk The fusing conductor of 104a, 104b will not agglomerate between the short-circuiting electrode 102,103, and cannot make short between short-circuiting electrode 102,103 The risk on road.
Therefore, in the various circuits of battery circuit etc., it is desirable to have short-circuiting electrode can be made by the fusing of fusible conductor Between reliable ground short circuit and form the short-circuit component in by-pass current path.
Solution for solving the problem
In order to solve above-mentioned problem, short-circuit component according to the present invention has: the 1st electrode；2nd electrode, and it is above-mentioned 1st electrode adjacent it is arranged；1st fusible conductor, by above-mentioned 1st electrode supporting, by fusing to throughout the above-mentioned 1st, the 2nd electricity Interpolar cohesion, to make the above-mentioned 1st, the 2nd electric pole short circuit；And heater, above-mentioned 1st fusible conductor is heated, the above-mentioned 1st is fusible Conductor is highlightedly supported to above-mentioned 2nd electrode opposite side.
Invention effect
According to the present invention, due to the 1st fusible conductor fusing point be higher than installation temperature and to the 2nd electrode opposite side highlightedly by Support, so heating in when flowing back installation etc. can also prevent and incipient short caused by the contact of the 2nd electrode.In addition, sending out The 1st fusible conductor melts when the fever of hot body is to more than the fusing point of 1st fusible conductor temperature, and fusing conductor cohesion is in the 1st electrode Around, to also touch the 2nd electrode with the configuration of the 1st electrode adjacent, the 1st, the 2nd inter-electrode short-circuit can be made.
Detailed description of the invention
Fig. 1 is to show the figure for being applicable in short-circuit component of the invention, and (A) is plan view, and (B) is A-A ' sectional view.
Fig. 2 is the figure for showing the state for being applicable in short-circuit component work of the invention, and (A) is plan view, and (B) is that A-A ' is cut Face figure.
Fig. 3 is to show the figure for being applicable in other short-circuit components of the invention, and (A) is plan view, and (B) is A-A ' sectional view.
Fig. 4 is to show the circuit structure diagram for being applicable in short-circuit component of the invention.
Fig. 5 is the circuit structure diagram for showing the state for being applicable in short-circuit component work of the invention.
Fig. 6 is the figure for showing the short-circuit component for having auxiliary fusible conductor, and (A) is plan view, and (B) is A-A ' sectional view.
Fig. 7 is to show the circuit diagram for being applicable in short-circuit component of the invention, (A) show electrical connection heater supply path and The short-circuit component of 1st fusible conductor, (B) show the short-circuit component of the supply path and the 1st fusible conductor that are electrically isolated heater, (C) it shows and has the 2nd fusible conductor, the automatic short-circuit component that supply path is truncated.
Fig. 8 is the figure for showing the state for the short-circuit component work for having auxiliary fusible conductor, and (A) is plan view, and (B) is A-A ' sectional view.
Fig. 9 is the figure for showing the short-circuit component of surface installing type, and (A) is plan view, and (B) is A-A ' sectional view.
Figure 10 is the figure for showing the short-circuit component of surface installing type of the heater in fever, and (A) is plan view, and (B) is A-A ' sectional view.
Figure 11 is the figure for showing the short-circuit component for the surface installing type that heater stops fever, and (A) is plan view, and (B) is A-A ' sectional view.
Figure 12 is the figure for showing the short-circuit component to the supply path of heater and the 1st, the 2nd electrode electric isolution, and (A) is flat Face figure, (B) are A-A ' sectional views.
Figure 13 (A) (B) is the circuit for showing the short-circuit component to the supply path of heater and the 1st, the 2nd electrode electric isolution The figure of structure.
Figure 14 is to show the short circuit electricity being applicable in the short-circuit component of the supply path of heater and the 1st, the 2nd electrode electric isolution The figure of one example on road.
Figure 15 is the figure for showing the short-circuit component for having auxiliary fusible conductor, and (A) is plan view, and (B) is the section A-A ' Figure.
Figure 16 is the figure for showing the short-circuit component for having the 2nd fusible conductor on the supply path to heater, and (A) is flat Face figure, (B) are A-A ' sectional views.
Figure 17 is the figure for showing the state for the short-circuit component work for having the 2nd fusible conductor, and (A) is plan view, and (B) is A-A ' sectional view.
Figure 18 is the figure for showing the short-circuit component for having the 2nd fusible conductor and auxiliary fusible conductor, and (A) is plan view, (B) It is A-A ' sectional view.
Figure 19 (A) is the sectional view for showing the short-circuit component for the back side that heater is located to insulating substrate, and Figure 19 (B) is The sectional view that heater is located to the short-circuit component of inside of insulating substrate is shown.
Figure 20 be show with high melting point metal layer and low-melting-point metal layer and have overlay structure fusible conductor it is vertical Body figure, (A) are shown using high melting point metal layer as internal layer, the structure covered with low-melting-point metal layer, and (B) is shown with low-melting-point metal Layer be internal layer, with high melting point metal layer cover structure.
Figure 21 is the perspective view for showing the fusible conductor for the stepped construction for having high melting point metal layer and low-melting-point metal layer, (A) 2 layers of structure up and down are shown, (B) shows the 3-tier architecture of internal layer and outer layer.
Figure 22 is the sectional view for showing the fusible conductor for the multilayered structure for having high melting point metal layer and low-melting-point metal layer.
Figure 23 is to show linear opening portion to be formed in the surface of high melting point metal layer and expose low-melting-point metal layer The plan view of fusible conductor, (A) split shed portion are alongst formed, and (B) split shed portion is formed along width direction.
Figure 24 is to show circular opening portion to be formed in the surface of high melting point metal layer and expose low-melting-point metal layer The plan view of fusible conductor.
Figure 25 is to show circular opening portion to be formed in high melting point metal layer, and be filled with the fusible of low-melting-point metal The plan view of conductor.
Figure 26 is the perspective view for showing the fusible conductor that the low-melting-point metal surrounded by refractory metal exposes.
Figure 27 is the figure of the state before the short-circuit component movement shown using fusible conductor shown in Figure 26, and (A) is plane Figure, (B) is A-A ' sectional view.
Figure 28 is the figure of the state before the short-circuit component movement shown using fusible conductor shown in Figure 26, and (A) is plane Figure, (B) is A-A ' sectional view.
Figure 29 is the plan view for showing short-circuit component involved in reference example.
Figure 30 is the figure for showing the battery circuit structure using short-circuit component involved in reference example.
Specific embodiment
Hereinafter, the short-circuit component for being applicable in of the invention is described in detail referring to attached drawing.In addition, the present invention not only limits In the following embodiments and the accompanying drawings, it is obviously able to carry out various changes without departing from the gist of the present invention.In addition, attached drawing is Schematically, the ratio etc. of each size has the situation different from reality.Specific size etc. should be sentenced with reference to the following description It is disconnected.Additionally, it is to be understood that the attached drawing also part different comprising the relationship of size each other or ratio between each other.
[short-circuit component 1]
It is applicable in short-circuit component 1 of the invention, as shown in Fig. 1 (A) (B), is had: the 1st electrode 11；It is adjacent with the 1st electrode 11 2nd electrode 12 of ground setting；It is supported by the 1st electrode 11 and by fusing to be agglomerated between the 1st, the 2nd electrode 11,12, from And make the 1st fusible conductor 13 of the short circuit of the 1st, the 2nd electrode 11,12；And the heater 14 of the 1st fusible conductor 13 of heating.
These the 1st, the 2nd electrodes 11,12 or heater 14, such as pass through high-melting-point gold on the insulating substrate of aluminium oxide etc. Belong to printing/firing of cream etc. and is formed in the same plane.In addition, the 1st, the 2nd electrode 11,12 or heater 14 can also pass through Commitment positions etc. are supported on using the mechanism part of wire material, the plate material being made of refractory metal etc. and are formed.
1st, the 2nd electrode 11,12 is by close configuration and opens, by the work of short-circuit component 1, such as Fig. 2 (A) (B) institute Show, constitute aftermentioned 1st fusible conductor 13 melts conductor 13a cohesion, the switch in conjunction with and via fusing conductor 13a short circuit 2.1st, the 2nd electrode 11,12 is equipped with external connection terminals 11a, 12a at one end respectively.1st, the 2nd electrode 11,12 is via these The external circuit of external connection terminals 11a, 12a and power circuit, digital signal circuit etc. connects, due to short-circuit component 1 acts As the by-pass current path of the external circuit or to the supply path of functional circuit.
In addition, in the case where the support of a part of supported body of the 1st be made of mechanism part, the 2nd electrode 11,12, It is preferred that the supporter is pyroconductivity 10W/mK insulating materials below.Short-circuit component 1 is supporting the 1st, the 2nd electrode 11,12 A part supporter be incorporated into the alumina ceramic envelope that such as pyroconductivity is up to 25W/mK in the case where, the 1st, The heat of 2 electrodes 11,12 radiates via the supporter to alumina ceramic envelope, becomes the situation for being difficult to heat.
Therefore, because supporting the 1st, using the supporter being made of pyroconductivity 10W/mK insulating materials below 2 electrodes 11,12, so short-circuit component 1 prevents the heat for the heater 14 for being transmitted to the 1st, the 2nd electrode 11,12 from existing via supporter The outer housing of general aluminium oxide ceramics etc. radiates, so as to heat, melt the 1st fusible conductor 13 rapidly.In addition, supporter Thermal conductivity ratio outer housing it is low, so as to inhibit the heat dissipation to outer housing, by making pyroconductivity 10W/mK hereinafter, It can be adequately suppressed the heat dissipation of the outer housing to general aluminium oxide ceramics, and then use maximum heat to pass as support body material Conductance is 2W/mK plastics below or glass, this is preferred for inhibiting heat dissipation.
1st fusible conductor 13 is able to use any metal melted rapidly using the fever of heater 14, can be preferred Using such as Sn or using Sn as the low-melting-point metal of the Pb-free solder of principal component etc..
In addition, the 1st fusible conductor 13 can also contain low-melting-point metal and refractory metal.It is excellent as low-melting-point metal Choosing is using Sn or using Sn as the scolding tin of the Pb-free solder of principal component etc., as refractory metal, it is preferable to use Ag, Cu or with these For the alloy etc. of principal component.By containing refractory metal and low-melting-point metal, in the case where short-circuit component 1 is installed in reflux, Even if reflux temperature is more than the fusion temperature of low-melting-point metal and low-melting-point metal melts, can also it inhibit low-melting-point metal to outside Outflow, and the shape of the 1st fusible conductor 13 can be maintained.In addition, in fusing, also corrode (erosion due to low-melting-point metal melts Scolding tin) refractory metal, so as to fuse rapidly at the fusing point temperature below in refractory metal.In addition, the 1st fusible leads Body 13 can be formed as illustrated by rear by various structures.
1st fusible conductor 13 is shown greatly rectangular plate-like and is formed, via the engagement material of connection scolding tin etc. on the 1st electrode 11 Expect that 15 wait and connect.Here, in short-circuit component 1 according to the present invention, the 1st fusible conductor 13 to 12 opposite side of the 2nd electrode It protrudes and is supported.1st fusible conductor 13 is discretely supported before short-circuit component 1 works with the 2nd electrode 12.Moreover, if hair Hot body 14 generates heat, then the 1st fusible conductor 13 is melted because of the heat of heater 14, and fusing conductor 13a cohesion is in the week of the 1st electrode 11 It encloses, to also contact with the 2nd electrode 12 for being adjacent to the 1st electrode 11 and configuring, makes short circuit between the 1st, the 2nd electrode 11,12.
As shown in Fig. 1 (B), the 1st fusible conductor 13 is to prominent with 12 opposite side of the 2nd electrode and be supported, thus heating Installation etc. in grafting material 15 melt in the case where, can also be reliably prevented with the contact of the 2nd electrode 12, heater can be prevented 14 antefebrile unexpected incipient shorts.
In addition, aoxidize in order to prevent, improve wetability etc., the 1st fusible conductor 13 is coated with solder flux 24(referring to Fig. 9).Separately Outside, it as long as the 1st fusible conductor 13 is to prominent with the side opposite side of the 2nd electrode 12 is equipped with, not necessarily needs to the 2nd The diametical direction of electrode 12 is prominent.
[heater]
The conductive component that heating, the heater 14 for melting the 1st fusible conductor 13 generate heat when being switched on, such as by Nickel chromium triangle, W, Mo, Ru etc. or containing these material constitute.In the case where heater 14 are arranged on insulating substrate, these are closed Gold or composition, coccoid and the resin binder of compound etc. mix and paste are made, and are carried out using screen printing technique Pattern is formed, and be burnt into etc. and formed.
[insulating layer]
1st electrode 11 of the heater 14 via insulating layer 17 and with the 1st fusible conductor 13 of support is continuous, can be across insulation Layer 17 heats the 1st electrode 11.Insulating layer 17 is the protection and insulation for seeking heater 14, and efficiency is well to the 1st electrode 11 transmit the heat of heaters 14 and are arranged, such as are made of glassy layer.1st electrode 11 can be heated using heater 14 from And melt the 1st fusible conductor 13, and be easy cohesion fusing conductor 13a.
In addition, 14 one end of heater is connect with heater extraction electrode 18, the other end is connect with heater electrode 19.Fever Body extraction electrode 18 and heater electrode 19 are the connection electrodes with external circuit for making heater 14 be powered, and heater 14 passes through External circuit controls heater extraction electrode 18 to the energization between heater electrode 19.
Short-circuit component 1 can also make one end of the 1st fusible conductor 13 be supported on heater extraction electrode 18.Because the 1st can Molten conductor 13 is supported by the 1st electrode 11 and heater extraction electrode 18, is led so the 1st electrode the 11 and the 1st is fusible in short-circuit component 1 Body 13 constitutes a part to the electrical path of heater 14.Therefore, short-circuit component 1 the 1st fusible conductor 13 melt and the 1st, It when short-circuit between 2nd electrode 11,12, is blown, is truncated to the logical of heater 14 between the 1st electrode 11 and heater extraction electrode 18 Power path, therefore can stop generating heat.In addition, heater extraction electrode 18 agglomerates to make more to melt conductor 13a in the 1st Electrode 11 is preferably formed into more narrow than the 1st electrode 11.
[major diameter portion]
In addition, the 1st electrode 11 can also form the big major diameter portion 16 of partial cross section's product.The surface area of major diameter portion 16 is big In the other parts of heater extraction electrode 18 or the 1st electrode 11, thus keep the fusing conductor 13a's of the 1st fusible conductor 13 Allow quantitative change more.In addition, major diameter portion 16 and the 2nd electrode 12 are adjacent, and compared with the other parts of the 1st electrode 11, with the 2nd The distance of electrode 12 is also shorter.Therefore, by the way that major diameter portion 16 is arranged, the fusing of more 1st fusible conductors 13 can be made to lead Body 13a is agglomerated in major diameter portion 16, and fusing conductor 13a is made to be easy to contact with the 2nd electrode 12, so as to make the 1st, the 2nd Reliable ground short circuit between electrode 11,12.
In addition, the major diameter portion on the extended line for being preferably spaced the 1st, the 2nd electrode gap of the 1st, the 2nd electrode 11,12 Below 16 width.For example, as shown in Figure 1, short-circuit component 1 preferably makes the interval W of the 1st, the 2nd electrode 11,121For the 1st, the 2nd The width W of major diameter portion 16 on the extended line of electrode gap2Below.The the 1st, the 2nd electrode 11,12 can be configured more as a result, Close position can more reliably, in the fusing conductor 13a of the 1st fusible conductor 13 agglomerate around major diameter portion 16 When also contacted with the 2nd electrode 12, make to melt conductor 13a and agglomerate between the 1st, the 2nd electrode 11,12.
[insulation covering]
In addition, short-circuit component 1, which also can be set, is routed 11b with the 1st electrode 11 the continuous 1st, and it is arranged and the 2nd electrode 12 continuous 2nd wiring 12b, the surface of the 1st, the 2nd wiring 11b, 12b is covered by insulating element 23.Short-circuit component 1 passes through exhausted Edge covering is routed 11b, 12b with the 1st, the 2nd electrode the 11,12 the continuous 1st, the 2nd, does not have wetting using to fusing conductor 13a Property insulating element 23 limit fusible conductor 13 fusing conductor 13a coagulation position.Short-circuit component 1 prevents fusing from leading as a result, Body 13a is flowed out to the side external connection terminals 11a, 12a, and can make to melt conductor 13a between the 1st, the 2nd electrode 11,12 And agglomerate, so as to make reliable ground short circuit between the 1st, the 2nd electrode 11,12.
[volume defining of the 1st fusible conductor]
In addition, short-circuit component 1 preferably makes the volume of the 1st fusible conductor 13 be at least the 1st electrode 11 as shown in Fig. 1 (B) The distance W between the area and the 1st, the 2nd electrode 11,12 of the side of the 2nd electrode 12 face-off1Product more than.It the 1st fusible leads as a result, Body 13 has volume required for the space between the 1st, the 2nd electrode 11,12 of landfill, the 1st can be made using conductor 13a is melted, It is short-circuit between 2nd electrode 11,12.
In addition, as shown in figure 3, short-circuit component 1 can also be formed the 1st, the 2nd electrode 11,12 with section substantially rectangular shape. In the case of figure 3, the volume of the 1st fusible conductor 13 is preferably also the area and the 1st, the 2nd electricity of the side of the 1st electrode 11 Between pole 11,12 more than the product of distance W.
[circuit structure]
Short-circuit component 1 has circuit structure shown in Fig. 4.That is, short-circuit component 1 constitutes switch 2, with the state before movement Under, keep the 1st electrode 11 and the 2nd electrode 12 close and separate and insulate, it is short-circuit because of the fusing of the 1st fusible conductor 13.1st, the 2nd さ is connected in series on the current path of the circuit substrate of installation short-circuit component 1 in electrode 11,12, to be packed into power circuit etc. Between various external circuit 28A, 28B.
In addition, heater 14 is from the 1st electrode 11 via the 1st fusible conductor 13, heater extraction electrode in short-circuit component 1 18 and it is continuous, and then formed and reach the supply path 3 of heater electrode 19.
Short-circuit component 1 is usually controlled using the current controling element 32 connected via heater electrode 19 to supply path 3 energization.Current controling element 32 is the switch element for controlling the energization of supply path 3, such as is constituted using FET, with inspection Whether the detecting element 35 of physical short connects the external circuit of survey loading short-circuit component 1.Detecting element 35 is to detect whether to produce It is raw to need to carry out alive circuit to various external circuit 28A, the 28B for being packed into short-circuit component 1, such as occurring at battery pack When abnormal voltage construct by-pass current path, in network communication equipment hacker, crack system building detour data clothes The by-passing signal path of business device or activating appts or software etc. need to make using the short circuit of the 1st, the 2nd electrode 11,12 outside Current path physics between portion circuit 28A, 28B irreversibly in the case where short circuit, acts current controling element 32.
Short-circuit component 1 makes supply path 3 be powered using current controling element 32 as a result, so that heater 14 be made to generate heat.If It is powered via supply path 3 to heater 14, then as shown in Fig. 2 (A) (B), the 1st fusible conductor 13 is added due to heater 14 Heat, fusing, fusing conductor 13a cohesion contact around the 1st electrode 11, and also with the 2nd electrode 12 of adjacent configuration.By This, in short-circuit component 1, the 1st, the 2nd electrode 11,12 of insulation via fusing conductor 13a short circuit, thus connect external circuit 28A, 28B。
At this point, if the 1st fusible conductor 13 melts due to the heat of heater 14, melting conductor 13a in short-circuit component 1 and existing The 2nd electrode 12 is touched because of tension during agglomerating around the 1st electrode, so as to make the 1st, the 2nd electrode 11,12 Between reliable ground short circuit.
In addition, in short-circuit component 1,2 electrode of Xiang Yu, 12 opposite side highlightedly supports the 1st fusible conductor 13, preferably with hair Hot body extraction electrode 18 supports together, thus, for example can prevent in the case where the reflux of short-circuit component 1 is installed on external circuit The only fusing of grafting material 15 incipient short partial and short-circuit to 12 lateral deviation of the 2nd electrode to the meeting of the 1st fusible conductor 13.
In addition, short-circuit component 1 after short circuit, draws the 1st electrode 11 of connection with heater between the 1st, the 2nd electrode 11,12 The 1st fusible conductor 13 fusing between electrode 18 out.As a result, in short-circuit component 1, via the 1st electricity of the 1st fusible conductor 13 connection It is open between pole 11 and heater extraction electrode 18, the supply path 3 to heater 14 is truncated.Therefore, stop to heater 14 Power supply, to stop the fever of heater 14.Circuit structure when short-circuit component 1 acts is shown in FIG. 5.
[fusing sequence]
Here, short-circuit component 1 is formed between the 1st, the 2nd electrode 11,12 after short circuit, make the 1st electrode 11 of connection and fever The 1st fusible conductor 13 fusing between body extraction electrode 18.This is because the 1st electrode connected via the 1st fusible conductor 13 11 and heater extraction electrode 18 constitute to the supply path 3 of heater 14, so existing when 11,12 short circuit of the 1st, the 2nd electrode When fusing between the 1st electrode 11 and heater extraction electrode 18 before, stop power supply to heater 14, thus cannot make the 1st, Short-circuit worry between 2nd electrode 11,12.
Therefore, short-circuit component 1 is formed as when 14 adstante febre of heater, makes between the 1st, the 2nd electrode 11,12 prior to the 1st electrode Truncation between 11 and heater extraction electrode 18 and it is short-circuit.Specifically, the 1st electrode 11 is via insulating layer in short-circuit component 1 17 is continuous with heater 14, and the configuration of heater extraction electrode 18 than the 1st, the 2nd electrode 11,12 further from heater 14 Position.As a result, in short-circuit component 1, if heater 14 generates heat, heat can be via insulating layer 17 faster than heater extraction electrode 18 It is transmitted to the 1st electrode 11.Therefore, when melting the 1st fusible conductor 13 by the 1st electrode 11, fusing conductor 13a can be made rapid It agglomerates around the 1st electrode 11, and melting conductor 13a makes short circuit between the 1st, the 2nd electrode 11,12, then, heater is truncated Extraction electrode 18.
[auxiliary fusible conductor]
In addition, shown in Fig. 7 (A), short-circuit component 1 can also make that fusible conductor 21 is assisted to connect with the 2nd electrode 12 such as Fig. 6, And make heater 14 via insulating layer 17 and continuous with the 1st, the 2nd electrode 11,12.
By being also provided with auxiliary fusible conductor 21 in the 2nd electrode 12, as shown in figure 8, short-circuit component 1 can by the 1st Each fusing conductor 13a, 21a increase of molten conductor 13 and auxiliary fusible conductor 21 are agglomerated molten between the 1st, the 2nd electrode 11,12 The amount for changing conductor, to be allowed to reliable ground short circuit.Auxiliary fusible conductor 21 is able to use material identical with the 1st fusible conductor 13 To be formed.In addition, auxiliary fusible conductor 21 can also be formed using various structures as being explained below.In addition, auxiliary can Molten conductor 21 is equally joined to the 2nd electrode 12 by engaging the grafting material 15 of scolding tin etc. with the 1st fusible conductor 13.
In addition, auxiliary fusible conductor 21 is preferably protrusively provided from the 2nd electrode 12 to 11 side of the 1st electrode, with the 1st electrode 11 Separate and be projected into the position of overlapping.In addition, supporting auxiliary fusible conductor in a manner of also Chong Die with the 1st fusible conductor 13 21, so that the fusing conductor 21a of fusible conductor 21 and the fusing conductor 13a of the 1st fusible conductor 13 is assisted to be easy to agglomerate, Neng Gouyou Help the short circuit between the 1st, the 2nd electrode 11,12.
In addition, auxiliary fusible conductor 21 can also be protrusively provided from the 2nd electrode 12 to 11 opposite side of the 1st electrode.By This, auxiliary fusible conductor 21 is same as the 1st fusible conductor 13, can prevent when heating installation etc. in grafting material 15 melt from And incipient short short-circuit between the 1st, the 2nd electrode 11,12.
2nd electrode 12 of engagement auxiliary fusible conductor 21, it is same as the 1st electrode 11, via insulating layer 17 and heater 14 is continuous.The 2nd electrode 12 can be such that the thermal efficiency of heater 14 transmits well via insulating layer 17 as a result, to melt rapidly Change auxiliary fusible conductor 21.
In turn, by by the 2nd electrode 12 hollow structure reduce thermal capacity, material it is low than thermalization, the high fever of material Conductivity etc. improves heating rate, to accelerate to assist the fusing of fusible conductor 21, by making the electricity of the 1st electrode the 11 and the 2nd Short circuit between pole 12 is faster than the fusing of the 1st fusible conductor 13, can reliably make between the 1st, the 2nd electrode 11,12 prior to the 1st electricity Truncation between pole 11 and heater extraction electrode 18 and it is short-circuit.
[surface installing type]
In addition, be applicable in short-circuit component of the invention, be capable of forming for can surface be installed on external circuit substrate.With surface The short-circuit component 1 that purposes is formed is installed, as shown in Fig. 9~11, is formed with heater 14, hair in the surface 10a of insulating substrate 10 Hot body extraction electrode 18 and heater electrode the 19, the 1st, the 2nd electrode 11,12 are layered on heater 14 across insulating layer 17.The 1 fusible conductor 13 is supported on the 1st electrode 11 and to prominent with 12 opposite side of the 2nd electrode, and with heater extraction electrode 18 Connection.In addition, Fig. 9 is the figure for showing the antefebrile state of heater 14 of short-circuit component 1, Figure 10 shows short-circuit component 1 The figure of state in the fever of heater 14, Figure 11 are to show the heater 14 of short-circuit component 1 to stop the figure of metapyretic state.
Insulating substrate 10 using such as aluminium oxide, glass ceramics, mullite, zirconium oxide with insulating properties component with General square shape shape is formed.In addition to this, insulating substrate 10 also can be used glass epoxy substrate, benzenesulfonate substrate etc. for printing cloth The material of line substrate, but need to pay attention to the temperature when fusing of the 1st fusible conductor 13.
Heater 14 can be formed in this way, that is, by the alloy of such as W, Mo, Ru etc. or the powdery of composition, compound Body and resin binder etc. mix and paste are made, and the surface 10a of insulating substrate 10 is formed in using screen printing technique pattern On, and be burnt into etc. and formed.In addition, heater extraction electrode 18 and heater electrode 19 can be by utilizing screen printing technique Pattern forms the refractory metal cream of Ag etc. and is burnt into etc. and formed on the surface 10a of insulating substrate 10.
In addition, 14 one end of heater is connect with heater extraction electrode 18, the other end is connect with heater electrode 19.Fever Body extraction electrode 18 includes: the lower layer part 18a for being formed in the surface 10a of insulating substrate 10 and connecting with heater 14；And layer The upper layer part 18b for being stacked on lower layer part 18a and being connect with the 1st fusible conductor 13.The upper layer part 18b of heater extraction electrode 18 from Lower layer part 18a is connected with the 1st fusible conductor 13 via grafting material 15 through being formed on insulating layer 17.Heater electrode 19 with It is formed in the external connection terminals 19a connection of the back side 10b of insulating substrate 10.Heater 14 is via external connection terminals 19a And it is connect with external circuit.
Heater 14 is covered by insulating layer 17 on the surface 10a of insulating substrate 10.Insulating layer 17 is to seek heater 14 Protection and insulation and efficiency be arranged well to the heat of the 1st, the 2nd electrode 11,12 transmitting heater 14, such as by glass Layer is constituted.On insulating layer 17, the 1st, the 2nd electrode 11,12 is adjacently formed in a manner of Chong Die with heater 14, from fever Body 14 separates and is formed with heater extraction electrode 18.1st, the 2nd electrode 11,12 is heated by heater 14, so as to make the 1st The fusing conductor 13a of fusible conductor 13 is easy cohesion.
In addition, insulating layer 17 can also be formed between insulating substrate 10 and heater 14.That is, short-circuit component 1 can also be with It is formed in the inside that heater 14 is formed in the insulating layer 17 of surface 10a of insulating substrate 10.
1st, the 2nd electrode 11,12 is formed from the surface 10a of insulating substrate 10 onto insulating layer 17.In addition, the 1st, the 2nd electricity Pole 11,12 is connect with external connection terminals 11a, 12a of the back side 10b for being formed in insulating substrate 10.Short-circuit component 1 is outer via this Portion connection terminal 11a, 12a are packed into the various external circuits of power circuit etc..
Between the 1st electrode 11 and heater extraction electrode 18, it is connected with the 1st fusible conductor 13 formed with plate.1st Fusible conductor 13 can be connected by the grafting material 15 of the engagement scolding tin that is located at the 1st electrode 11 and heater extraction electrode 18 etc. Ground is supported on the 1st electrode 11 and heater extraction electrode 18.The formation of short-circuit component 1 as a result, reaches that the 1st electrode the 11, the 1st is fusible to lead Body 13, heater extraction electrode 18, heater 14, heater electrode 19 the supply path 3 to heater 14.
In addition, short-circuit component 1 except the 1st be adjacently arranged, the 2nd electrode 11,12 opposed a part in addition to be formed with Insulating element 23.Insulating element 23 uses the material for not having wetability to fusing conductor 13a of glass etc..1st, the 2nd electrode 11,12 except opposite side edge is to be externally provided with insulating element 23, to melt conductor 13a throughout not set insulating element 23 It is agglomerated between 1st, the 2nd electrode 11,12, therefore reliable ground short circuit can be allowed to.
In turn, the 1st, the 2nd electrode 11,12 covered by insulating element 23 is big with Chong Die heater 14 by being expanded to Identical region is caused, can efficiently concentrate the heat for carrying out spontaneous heating body 14 to make the 1st fusible conductor 13 in a shorter time Fusing.In addition, setting assists fusible conductor 21 or grafting material 15 on the 2nd electrode 11 by advance notice, when can make to heat Short action is relatively reliable.
In addition, short-circuit component 1 is also formed with insulating layer 23 in heater extraction electrode 18, connecing for connection scolding tin etc. is prevented Condensation material 15 or the outflow for melting conductor 13a.Moreover, the 1st fusible conductor 13 aoxidizes in order to prevent, improves wetability etc. and applies There is solder flux 24.In addition, cover (not shown) is covered on the surface 10a of insulating substrate 10 in short-circuit component 1.
In short-circuit component 1, if heater 14 generates heat, such as shown in Figure 10 (A) (B), the 1st fusible conductor 13 is across insulating layer 17 and the 1st, the 2nd electrode 11,12 and be heated, fusing conductor 13a cohesion between the 1st, the 2nd electrode 11,12, to be allowed to short Road.At this point, short-circuit component 1 is stayed between the 1st, the 2nd electrode 11,12 by the insulating element 23 being located on the 1st, the 2nd electrode 11,12 Conductor 13a is firmly melted, to be easy short circuit between making the 1st, the 2nd electrode 11,12, and fusing conductor 13a can be prevented to outside The side connection terminal 11a, 12a outflow, thus the case where being had an impact to the connection status with external circuit.
Then, as shown in Figure 11 (A) (B), in short-circuit component 1, the 1st fusible conductor 13 draws in the 1st electrode 11 with heater It fuses between electrode 18 out, the supply path 3 of heater 14 is truncated to stop generating heat.
Here, the 1st, the 2nd electrode 11,12 is Chong Die with heater 14 in short-circuit component 1, heater extraction electrode 18 is arranged In the position isolated from heater 14, therefore work as 14 adstante febre of heater, can make between the 1st, the 2nd electrode 11,12 prior to the 1st electricity The truncation of supply path 3 between pole 11 and heater extraction electrode 18 and it is short-circuit.
[short-circuit component 50]
In addition, being applicable in short-circuit component of the invention can also make fusible to lead to the supply path 3 of heater 14 and by the 1st 1st, the 2nd electrode 11,12 of 13 short circuit of body is electrically isolated.As shown in Figure 12 (A) (B), in the short-circuit component 50, in heater 14 One end is connected with heater extraction electrode 18, is formed with heater electrode 19 in the other end of heater 14, is formed to heater 14 supply path 3, and the 1st fusible conductor 13 will not connect with heater extraction electrode 18 and be supported by the 1st electrode 11.This Outside, in the explanation of short-circuit component 50, identical label is marked for component identical with above-mentioned short-circuit component 1 and omits it In detail.
In short-circuit component 50, the 1st electrode 11 of the 1st fusible conductor 13 is supported to connect via insulating layer 17 with heater 14 Continuous, efficiency transmits the heat of heater 14 well, so as to melt the 1st fusible conductor 13.That is, in short-circuit component 50, hair Hot 14 and the 1st electrode 11 of body and the 1st fusible conductor 13 are electrically isolated, and hot connection.
In addition, supply path 3 is via the external connection terminals 18a for being located at heater extraction electrode 18 in short-circuit component 50 And it is connect with the power supply for being formed in external circuit.
Moreover, in short-circuit component 50, the 1st fusible conductor 13 by the 1st electrode 11 to 12 opposite side of the 2nd electrode highlightedly It is supported, if melting the 1st fusible conductor 13 using come the heating of spontaneous heating body 14, melts conductor 13a cohesion in the 1st electricity Around pole 11, to contact with the 2nd electrode 12, thus make short circuit between the 1st, the 2nd electrode 11,12.
Short-circuit component 50 is due to the current path between being continuously packed into the 1st, the 2nd electrode 11,12 of external circuit and make the 1st can The supply path 3 to heater 14 that molten conductor 13 fuses is electrically isolated, so the type of external circuit can not depended on and higher Ground sets the supply voltage of supply path 3, even if can also supply adequately is made using the heater 14 of low rated value electric current The electric power of the calorific value of 1st fusible conductor 13 fusing.Therefore, according to short-circuit component 50, as via the 1st, the 2nd electrode 11,12 And it is allowed to the external circuit of short circuit, except power circuit, it also can be suitably used for the digital signal circuit for flowing faint electric current.
In addition, according to short-circuit component 50, due to the electric current between continuous the 1st, the 2nd electrode 11,12 for being packed into external circuit Path is electrically isolated the supply path 3 of the pairs of heater 14 of landform, so can be with the current rating of external circuit independently root The current controling element 32 of the power supply to heater 14 is controlled according to the rated value selection of heater 14, it is low specified by using controlling Be worth electric current heater 14(such as 1A) current controling element 32, can more inexpensively be manufactured.
In addition, short-circuit component 50 can also be only with the 1st electrode 11 come the 1st fusible conductor 13 of cantilever support, or it can also be with The one side edge of the 1st fusible conductor 13 is supported with the 1st electrode 11 and another side is supported by support electrode (not shown) Edge.
[circuit structure]
Then, the circuit structure of short-circuit component 50 is illustrated.The circuit diagram of short-circuit component 50 is shown in Figure 13 (A). One example of the short circuit current 60 for being applicable in short-circuit component 50 is shown in Figure 14.
It is open mutually in the initial state and because the 1st fusible leads that short-circuit component 50 constitutes the 1st electrode 11 and the 2nd electrode 12 The switch 2 of the fusing of body 13 and short circuit, has the 1st circuit 51 that the 1st electrode 11 and the 2nd electrode 12 is connected by the switch 2.1st Circuit 51 is connected in series in various external circuit 28A, 28B of power circuit, digital signal circuit for being packed into short-circuit component 50 etc. Between.
In addition, heater extraction electrode 18, heater 14 and heater electrode 19 are in the initial state in short-circuit component 50 Constitute the supply path 3 to heater 14.Supply path 3 and the 1st circuit 51 are electrically isolated, and being made using the heat of heater 14 the 1st can Molten conductor 13 melts, thus with the hot connection of the 1st circuit 51.14 one end of heater is supplied via heater extraction electrode 18 and control The current controling element 32 of electricity connects.In addition, 14 other end of heater is powered via heater electrode 19 with to heater 14 External power supply 53 connect.
Current controling element 32 is the switch element for controlling the power supply to supply path 3, such as is constituted with FET, with inspection Whether survey wants the detecting element 35 of the 1st circuit 51 of physical short to connect.Detecting element 35 is to detect whether to occur to short-circuit component The necessary circuit being powered between various external circuit 28A, 28B of 50 the 1st circuit 51 of loading, such as there is battery pack When in abnormal voltage construct by-pass current path, in network communication equipment hacker, crack system building detour data The by-passing signal path of server or activating appts or software etc. need to make external circuit using the short circuit of the 1st circuit 51 Current path physics between 28A, 28B irreversibly in the case where short circuit, makes current controling element 32.
The electric power of external power supply 53 is supplied to supply path 3 as a result, and heater 14 generates heat, so that the 1st fusible conductor 13 is molten Change, fusing conductor 13a agglomerates between the 1st, the 2nd electrode 11,12.The 1st electrode 11 and the 2nd electrode 12 are via fusing as a result, Conductor 13a short circuit, so that external circuit 28A, 28B are connected.
At this point, in short-circuit component 50, since the supply path 3 to heater 14 is formed with being electrically isolated with the 1st circuit 51, because This can power to heater 14, until the 1st, the 2nd electrode 11,12 short circuit.
[auxiliary fusible conductor]
In addition, short-circuit component 50 can also make that fusible conductor 21 is assisted to be connected to the 2nd electrode as shown in Figure 15, Fig. 7 (B) 12, and keep heater 14 and the 1st, the 2nd electrode 11,12 continuous via insulating layer 17.Short-circuit component 50 can pass through as a result, Each fusing conductor 13a, 21a increase of 1 fusible conductor 13 and auxiliary fusible conductor 21 are coagulated between the 1st, the 2nd electrode 11,12 The amount of poly- fusing conductor, to be allowed to reliable ground short circuit.
In addition, in short-circuit component 50 it is also preferred that auxiliary fusible conductor 21 from the 2nd electrode 12 to 11 side of the 1st electrode highlightedly Setting, and it is projected into the position for separating and being overlapped with the 1st electrode 11.In addition, auxiliary fusible conductor 21 with also with the 1st it is fusible The mode that conductor 13 is overlapped is supported, due to that can make the fusing conductor 21a for assisting fusible conductor 21 and the 1st fusible conductor 13 Fusing conductor 13a is easy to agglomerate, and can aid in the short circuit between the 1st, the 2nd electrode 11,12.
In addition, auxiliary fusible conductor 21 can also be protrusively provided from the 2nd electrode 12 to 11 opposite side of the 1st electrode.By This, auxiliary fusible conductor 21 is same as the 1st fusible conductor 13, heating when can prevent grafting material 15 from installing using heating and Melt the incipient short thus short-circuit between making the 1st, the 2nd electrode 11,12.
[short-circuit component 70]
In addition, as shown in figure 16, being applicable in short-circuit component of the invention can also make the 2nd fusible conductor 72 between to heater On 14 supply path 3.The short-circuit component 70 includes: the heater current electrode being adjacently arranged with heater extraction electrode 18 71；And the 2nd fusible conductor 72 carried between heater extraction electrode 18 and heater current electrode 71.In addition, short In circuit component 70, identical label is marked for component identical with above-mentioned short-circuit component 1 and omits it in detail.Figure 13 (B) The circuit diagram of short-circuit component 70 is shown.
Heater current electrode 71 is provided adjacent to heater extraction electrode 18, and via the 2nd fusible conductor 72 and hair Hot body extraction electrode 18 connects, and thus constitutes the supply path 3 to heater 14.In addition, heater current electrode 71 with become It is connect with the external connection terminals 71a of the connection terminal of external circuit.Heater current electrode 71 is able to use to be drawn with heater The identical material of electrode 18 is formed simultaneously when forming heater extraction electrode 18 out.
2nd fusible conductor 72 spreads and takes between the heater extraction electrode 18 being provided adjacent to and heater current electrode 71 It carries, a part to the supply path 3 of heater 14 is constituted before short-circuit component 70 works.2nd fusible conductor 72 is able to use Material identical with the 1st fusible conductor 13 is formed.It, can be using each in addition, the 2nd fusible conductor 72 is also as will be explained later Structure is planted to be formed.
As shown in figure 17, short-circuit component 70 is by being arranged the 2nd fusible conductor 72 in supply path 3, when heater 14 generates heat When the 2nd fusible conductor 72 fuse, fusing conductor 72a divide heater extraction electrode 18 and heater current electrode 71 and agglomerate, from And supply path 3 can be truncated, it is automatically stopped the fever of heater 14.At this point, short-circuit component 70 is so that the 2nd fusible conductor 72 The mode that will not be fused prior to the 1st fusible conductor 13 is formed.
[fusing sequence]
That is, because the heater current electrode 71 connected in short-circuit component 70 via the 2nd fusible conductor 72 and fever Body extraction electrode 18 constitutes the supply path 3 to heater 14, so when heater current electrode 71 and heater extraction electrode When fusing between 18 prior to the short circuit of the 1st, the 2nd electrode 11,12, stop power supply to heater 14, exist cannot make the 1st, Short-circuit worry between 2nd electrode 11,12.
Therefore, short-circuit component 70 is formed as working as 14 adstante febre of heater, supplies between the 1st, the 2nd electrode 11,12 prior to heater Truncation between electrode 71 and heater extraction electrode 18 and it is short-circuit.Specifically, short-circuit component 70 makes the 1st fusible conductor 13 Configuration than the 2nd fusible conductor 72 closer to the position of heater 14.Short-circuit component 70 is in 14 adstante febre of heater, warm as a result, The 1st fusible conductor 13 can be faster transmitted to than the 2nd fusible conductor 72.Therefore, when 14 adstante febre of heater, the 1st can be made rapidly Fusible conductor 13 melts, and melts conductor 13a cohesion around the 1st electrode 11, and melt conductor 13a to make the 1st, the 2nd electrode 11, short circuit between 12, then, the 2nd fusible conductor 72 melt and the supply path 3 to heater 14 are truncated.Therefore, short-circuit component 70 It can continue reliably to power to heater 14, until short circuit between the 1st, the 2nd electrode 11,12.
In addition, short-circuit component 70 is become and short-circuit component 1 by electrical connection heater current electrode 71 and the 1st electrode 11 Same circuit structure, and by by short-circuit purposes of the 1st fusible conductor 13 between the 1st, the 2nd electrode 11,12, the 2nd fusible Conductor 72 be heater 14 truncation purposes and divided function, can make in the circuit of short-circuit component 1 short circuit and truncation sequence It arranges relatively reliable.
In addition, the 1st, the 2nd fusible conductor 13,72 is due to the smaller faster fusing of sectional area, so can also be formed as making The sectional area of 1st fusible conductor 13 less than the 2nd fusible conductor 72 sectional area so that between the 1st, the 2nd electrode 11,12 prior to fever Truncation between body current electrode 71 and heater extraction electrode 18 and it is short-circuit.
Alternatively, it is also possible to make the fusing point phase of the 2nd fusible conductor 72 by the material for changing the 1st, the 2nd fusible conductor 13,72 To the fusing point for being higher than the 1st fusible conductor 13, so that prior to heater current electrode 71 and heater between the 1st, the 2nd electrode 11,12 Truncation between extraction electrode 18 and it is short-circuit.For example, making the 1st, the 2nd fusible conductor 13,72 low-melting-point metals and high-melting-point When the stepped construction of metal, by improving the ratio of low-melting-point metal in the 1st fusible conductor 13 and improving in the 2nd fusible conductor The ratio etc. of refractory metal, it is poor can be arranged fusing point.
In addition, in short-circuit component 70, can also only with the 1st electrode 11 come the 1st fusible conductor 13 of cantilever support, or with 1st electrode 11 supports the one side edge of the 1st fusible conductor 13, supports another side edge can also with support electrode (not shown).
[auxiliary fusible conductor]
In addition, short-circuit component 70 can also make that fusible conductor 21 is assisted to be connected to the 2nd electrode as shown in Figure 18, Fig. 7 (C) 12, and make heater 14 via insulating layer 17 and continuous with the 1st, the 2nd electrode 11,12.Short-circuit component 70 can pass through as a result, 1st fusible conductor 13 and each fusing conductor 13a, the 21a for assisting fusible conductor 21, increase between the 1st, the 2nd electrode 11,12 and The amount of the fusing conductor of cohesion, and it is allowed to reliable ground short circuit.
In addition, it is also preferred that making to assist fusible conductor 21 prominent to 11 side of the 1st electrode from the 2nd electrode 12 in short-circuit component 70 Ground setting, and separated with the 1st electrode 11 and be projected into the position of overlapping.In addition, with side also Chong Die with the 1st fusible conductor 13 Formula support auxiliary fusible conductor 21, so as to make the fusing conductor 21a of auxiliary fusible conductor 21 and melting for the 1st fusible conductor 13 Change conductor 13a to be easy to agglomerate, and facilitates the short circuit between the 1st, the 2nd electrode 11,12.
In addition, auxiliary fusible conductor 21 can also be protrusively provided from the 2nd electrode 12 to 11 opposite side of the 1st electrode.By This, auxiliary fusible conductor 21 can be same as the 1st fusible conductor 13, prevents the grafting material 15 when heating installation from melting to make Short-circuit incipient short between 1st, the 2nd electrode 11,12.
[other structures]
In addition, preferably having and the 1st in above-mentioned each short-circuit component 1,50,70 with the 1st fusible conductor 13 that plate is formed The area of the 2 times or more of the connection area of electrode 11.As a result, the 1st fusible conductor 13 ensure adequately to make the 1st, the 2nd electrode 11, The amount of short-circuit fusing conductor between 12, and in the case where end is supported by heater extraction electrode 18, it can also fuse rapidly.
In addition, in above-mentioned each short-circuit component 1,50,70 the 1st fusible conductor 13 can also be formed with wire material, at this In the case of, the 1st fusible conductor 13 preferably has the length with the 2 times or more of the connection length of the 1st electrode 11.The 1st is fusible as a result, Conductor 13 ensures adequately to make the amount of short-circuit fusing conductor between the 1st, the 2nd electrode 11,12, and is drawn in end by heater In the case that electrode 18 supports, it can also fuse rapidly.
[plating processing]
In addition, the 1st, the 2nd electrode 11 of above-mentioned each short-circuit component 1,50,70,12, heater extraction electrode 18 and fever The general electrode material that body current electrode 71 is able to use Cu, Ag etc. is formed, preferably by the well known method of coating processing etc. The overlay film of plating Ni/Au coating, Ni/Pd coating, Ni/Pd/Au coating etc. on the surface.Each 1,50,70 energy of short-circuit component as a result, The the 1st, the 2nd electrode 11,12, the oxidation of heater extraction electrode 18 and heater current electrode 71 are enough prevented, to reliably protect Hold the 1st, the 2nd fusible conductor 13,72.In addition, in the case where short-circuit component 1,50,70 are installed in reflux, by connecting the 1st, the 2nd The grafting material 15 of the connection scolding tin of fusible conductor 13,72 etc. or formed the 1st, the 2nd fusible conductor 13,72 outer layer it is low The fusing of melting point metals can prevent the 1st, the 2nd electrode 11,12,71 quilt of heater extraction electrode 18 and heater current electrode Corrode (erosion scolding tin).
[position of heater]
In addition, the short-circuit component 1 of surface installing type in addition to the surface 10a of insulating substrate 10 formed heater 14 other than, As shown in Figure 19 (A), it can also be arranged in the back side 10b of insulating substrate 10.In this case, heater 14 is in insulating substrate 10 Back side 10b in covered by insulating layer 17.In addition, constituting also the same to the heater electrode 19 of the supply path 3 of heater 14 It is formed in the back side 10b of insulating substrate 10.In heater extraction electrode 18, the lower layer part 18a connecting with heater 14 is formed in 10 back side 10b of insulating substrate, the upper layer part 18b for carrying the 1st fusible conductor 13 are formed in the surface 10a of insulating substrate 10, lower layer Portion 18a and upper layer part 18b are continuous via conductive through hole.
In addition, heater 14 is formed in Chong Die with the 1st, the 2nd electrode 11,12 preferably in the back side 10b of insulating substrate 10 Position.In addition, heater extraction electrode 18 is preferably provided at than the 1st, the 2nd electrode 11,12 further from the position of heater 14.
In addition, heater 14 can also be formed in the inside of insulating substrate 10 by short-circuit component 1 as shown in Figure 19 (B).? In this case, no setting is required for the insulating layer 17 of covering heater 14.In addition, the heater electrode of one end of connection heater 14 19, the one end connecting with heater 14 is formed to the inside of insulating substrate 10, via conductive through hole and is located at insulating substrate The external connection terminals 19a connection of 10 back side 10b.In heater extraction electrode 18, the lower layer part 18a that is connect with heater 14 The inside for forming insulating substrate 10, it is continuous with the upper layer part 18b of the 1st fusible conductor 13 of carrying via conductive through hole.
In addition, preferably in the inside of insulating substrate 10, the position Chong Die with the 1st, the 2nd electrode 11,12 is formed heater 14. In addition, heater extraction electrode 18 is preferably provided at than the 1st, the 2nd electrode 11,12 further from the position of heater 17.
Short-circuit component 1 is made by making heater 14 be formed in the back side 10b of insulating substrate 10 or the inside of insulating substrate 10 The surface 10a of insulating substrate 10 is flat, and thereby, it is possible to form the 1st, the 2nd electrode 11,12 and heater on the 10a of surface to draw Electrode 18.Therefore, short-circuit component 1 can simplify the manufacturing process of the 1st, the 2nd electrode 11,12 and heater extraction electrode 18, and And it is possible to realize short aization.
In addition, short-circuit component 1 is in the inside for the back side 10b or insulating substrate 10 that heater 14 is formed in insulating substrate 10 In the case where, also can material by using the excellent material of the heat conductivity of fine ceramics etc. as insulating substrate 10, with layer Situation about being stacked on the surface 10a of insulating substrate 10 equally utilizes the heating of heater 14, the 1st fusible conductor 13 of fusing.
[structure of fusible conductor]
As described above, the 1st, the 2nd fusible conductor 13,72 and auxiliary fusible conductor 21 can also contain low-melting-point metal and height Melting point metals.In addition, in the following description, other than the case where needing especially difference, by the 1st, the 2nd fusible conductor 13, 72 and auxiliary fusible conductor 21 be referred to as " fusible conductor 13,72,21 ".As low-melting-point metal, it is preferable to use based on Sn at Point Pb-free solder etc. scolding tin, as refractory metal, it is preferable to use Ag, Cu or using these as alloy of principal component etc..This When, as shown in Figure 20 (A), fusible conductor 13,72,21, which also can be used, is equipped with high melting point metal layer 91, as outer as internal layer Layer is equipped with the fusible conductor of low-melting-point metal layer 92.In this case, fusible conductor 13,72,21 may be either high melting point metal layer The structure that 91 entire surface is covered by low-melting-point metal layer 92 can also be the knot covered in addition to opposite a pair of of side Structure.The well known film forming skill of coating etc. is able to use with the overlay structure that high melting point metal layer 91 or low-melting-point metal layer 92 carry out Art and formed.
In addition, fusible conductor 13,72,21, which also can be used, is equipped with low-melting-point metal layer as internal layer as shown in Figure 20 (B) 92, the fusible conductor of high melting point metal layer 91 is equipped with as outer layer.In this case, fusible conductor 13,72,21 can also be eutectic The structure that the entire surface of point metal layer 92 is covered by high melting point metal layer 91, is covered in addition to opposite a pair of of side Structure can also.
In addition, as shown in figure 21, fusible conductor 13,72,2 can also be high melting point metal layer 91 and 92 layers of low-melting-point metal layer Folded stepped construction.
In this case, fusible conductor 13,72,21 is such as shown in Figure 21 (A), may be either with by with the 1st, the 2nd electrode 11,12 Or the lower layer of the equal connections of heater extraction electrode 18 and 2 layers of structure of the upper layer composition being laminated in lower layer are formed, in the case where becoming The upper surface layer of the high melting point metal layer 91 of layer builds up the low-melting-point metal layer 92 for upper layer, is becoming lower layer with may be reversed The upper surface layer of low-melting-point metal layer 92 build up the high melting point metal layer 91 for upper layer.Alternatively, fusible conductor 13,72,21 is such as Shown in Figure 21 (B), it both can be used as by internal layer and formed in the 3-tier architecture that constitutes of the outer layer that is laminated of upper and lower surface of internal layer, It can exist on the contrary in low-melting-point metal layer 92 of the upper and lower surface stacking for becoming the high melting point metal layer 91 of internal layer as outer layer The high melting point metal layer 91 that the upper and lower surface stacking of low-melting-point metal layer 92 as internal layer becomes outer layer can also.
In addition, fusible conductor 13,72,21 as shown in figure 22, can also be high melting point metal layer 91 and low-melting-point metal layer 92 Alternately stacked 4 layers or more of multilayered structure.In this case, fusible conductor 13,72,21 can also be outermost using constituting Metal layer is come the structure that covers entire surface or covered other than opposite a pair of of side.
In addition, fusible conductor 13,72,21 can also constitute the surface of the low-melting-point metal layer 92 of internal layer with striated office High melting point metal layer 91 is laminated to portion.Figure 23 is the plan view of fusible conductor 13,72,21.
Fusible conductor 13,72,21 shown in Figure 23 (A) by the surface of low-melting-point metal layer 92 along width direction with Predetermined distance forms the high melting point metal layer 91 of multiple threadiness along its length, alongst forms linear opening portion 93, expose low-melting-point metal layer 92 from the opening portion 93.Fusible conductor 13,72,21 is by making low-melting-point metal layer 92 from opening Portion 93 exposes, and increases the low-melting-point metal of fusing and the contact area of refractory metal, further promotes high melting point metal layer 91 Corrosion function and can be improved fusing.It opening portion 93 can be high for example, by implementing to constitute to 92 part of low-melting-point metal layer The part coating of the metal of melting point metal layer 91 and formed.
In addition, fusible conductor 13,72,21 such as Figure 23 (B) is shown, it can also be on the surface of low-melting-point metal layer 92 along length Direction forms the high melting point metal layer 91 of multiple threadiness with predetermined distance along width direction, to form line along width direction The opening portion 93 of shape.
In addition, fusible conductor 13,72,21 is as shown in figure 24, Gao Rong can also be formed on the surface of low-melting-point metal layer 92 Point metal layer 91, and form circular opening portion 94 throughout the entire surface of high melting point metal layer 91, from the opening portion 94 Expose low-melting-point metal layer 92.It opening portion 94 can be for example, by implementing to constitute refractory metal in 92 part of low-melting-point metal layer Layer 91 metal local coating and formed.
Fusible conductor 13,72,21 is increased and the low melting point of fusing gold by exposing low-melting-point metal layer 92 from opening portion 94 Belong to the contact area with refractory metal, further promotes the corrosion function of refractory metal and can be improved fusing.
In addition, fusible conductor 13,72,21 is as shown in figure 25, it can also be in the formation of high melting point metal layer 91 for becoming internal layer Multiple opening portions 95 are formed a film low-melting-point metal layer 92 in the high melting point metal layer 91 using coating technology etc., and are filled in out In oral area 95.The area that the low-melting-point metal of the increase of fusible conductor 13,72,21 fusing connects with refractory metal as a result, therefore Corrode refractory metal can be understood by low-melting-point metal in a short time.
Make the volume of low-melting-point metal layer 92 more than high melting point metal layer in addition, fusible conductor 13,72,21 is preferably formed into 91 volume.The fusing corrode that fusible conductor 13,72,21 is heated by low-melting-point metal because of the fever of heater 14 is high Melting point metals, thus, it is possible to melt rapidly, fuse.Therefore, fusible conductor 13,72,21 is by being formed as that eutectic is made to make a metal The volume of layer 92 is more than the volume of high melting point metal layer 91, promotes the corrosion, can make fast between the 1st, the 2nd electrode 11,12 Fast short circuit.
In addition, as shown in figure 26, fusible conductor 13,72,21 also may include: to be formed with substantially rectangular plate and utilize structure It is covered at the refractory metal of outer layer and is formed as opposite the 1st side of a pair than interarea portion 13b, 72b, 21b wall thickness Edge 13c, 72c, 21c；And make expose constitute internal layer low-melting-point metal expose and be formed as than the 1st lateral edge portion 13c, Opposite a pair the 2nd lateral edge portion 13d, 72d, 21d of 72c, 21c thinner thickness.
1st side lateral edge portion 13c, 72c, 21c is covered by high melting point metal layer 91, and is consequently formed to lead than fusible Formed to interarea portion 13b, 72b, 21b more wall thickness of body 13,72,21.2nd lateral edge portion 13d, 72d, 21d is revealed by side Expose using high melting point metal layer 91 low-melting-point metal layer 92 surrounded because of periphery out.2nd lateral edge portion 13d, 72d, 21d Other than the both ends adjacent with the 1st lateral edge portion 13c, 72c, 21c with interarea portion 13b, 72b, 21b same thickness.
The 1st fusible conductor 13 constituted as described above as shown in figure 27, the 1st lateral edge portion 13c with spread the 1st electrode 11 Connected between heater extraction electrode 18, the 2nd lateral edge portion 13d along on the 1st electrode 11 and heater extraction electrode 18 and Connection.
As a result, short-circuit component 1 can prevent when flowing back installation etc. in the deformation of the 1st fusible conductor 13, the 1st fusible conductor The truncation of supply path 3 caused by 13 fusing, fusing.In addition, short-circuit component 1 is after the fever of heater 14, can make the 1st can The molten fusing rapidly of conductor 13, and agglomerate in being allowed to short circuit on the 1st, the 2nd electrode 11,12.In turn, short-circuit component 1 make the 1st, Between 2nd electrode 11,12 after short circuit, the supply path to heater 14 can be truncated.
That is, the 1st lateral edge portion 13c is covered by refractory metal, due to also not exposing low-melting-point metal layer 92, so being difficult to Corrosion is played, needs more thermal energy before melting.Therefore, heating when installing even from reflux etc., the 1st can Molten conductor 13 is also difficult to deform between the 1st electrode 11 and heater extraction electrode 18, melt, can prevent the 1st electrode 11 with Fuse between heater extraction electrode 18 and caused by supply path 3 truncation.
In addition, the 2nd lateral edge portion 13d is formed as thin-walled relative to the 1st lateral edge portion 13c.In addition, the 2nd lateral edge portion 13d Side expose constitute internal layer low-melting-point metal layer 92.The 2nd lateral edge portion 13d plays low-melting-point metal layer 92 and carries out as a result, High melting point metal layer 91 corrosion, and, the thickness of the high melting point metal layer 91 of corrode is again formed as than the 1st lateral edge portion 13c is thin, thus compared with being formed as the 1st lateral edge portion 13c of wall thickness because of high melting point metal layer 91, it can be with less thermal energy Amount fusing rapidly.
Therefore, it in short-circuit component 1, by the fever of heater 14, melts the 2nd lateral edge portion 13d rapidly, leads fusing Body agglomerates between the 1st electrode 11 and the 2nd electrode 12 opposed with the 2nd lateral edge portion 13d.As a result, in short-circuit component 1 1,11,12 short circuit of the 2nd electrode.
In turn, the 1st lateral edge portion 13c as described above needs more thermal energy before melting, therefore in the 1st, the 2nd electricity It fuses between the 1st electrode 11 and heater extraction electrode 18 after pole 11,12 short circuits.Therefore, short-circuit component 1 can make the 1st, After 2 electrodes 11,12 reliable ground short circuits, the supply path 3 to heater 14 is truncated.
In addition, the 2nd fusible conductor 72 constituted as described above, as shown in figure 28, by spreading heater extraction electrode The 1st lateral edge portion 72c covered by refractory metal is configured between 18 and heater current electrode 71, needs phase in fusing When time, thereby, it is ensured that the 1st fusible conductor 13 melts and makes the time between the 1st, the 2nd electrode 11,12 until short circuit, Neng Goufang The case where only supply path 3 is truncated before short circuit.
In addition, in the short-circuit component 1,50,70 for not having auxiliary fusible conductor 21, it can also be via insulating layer 17 to the 1, the 2nd electrode 11,12 connects heater 14.For example, as shown in figure 28, short-circuit component 70 can make heater 14 be also connected to the 2 electrodes 12 and heated, so that efficiency soaks the 1st fusible conductor 13 well, can make to melt conductor in the 1st, the 2nd electrode 11, cohesion, short circuit between 12.
The fusible conductor 13,72,21 having a structure in which passes through the metal with the Ag for constituting high melting point metal layer 91 etc. Covering constitutes the low-melting-point metal foil of solder foil of low-melting-point metal layer 92 etc. and manufactures.Eutectic is covered as with refractory metal The engineering method of point metal layer foil can continuously implement height with the low-melting-point metal foil of long ruler-like in operating efficiency, manufacturing cost The electro deposition method of melting point metals coating is advantageous.
If being plated with electrolysis to implement high-melting metal coating, the marginal portion of the low-melting-point metal foil of long ruler-like, that is, side Current density is relatively strong in edge part, and high melting point metal layer 91 understands coating thicker (referring to Figure 26).Side edge is formed as a result, Portion is formed as the conductor band 96 of the long ruler-like of wall thickness because of high melting point metal layer.Then, by by the conductor band 96 along with length The orthogonal width direction in direction (direction C-C ' in Figure 26) is cut off with certain length, produces fusible conductor 13,72,21.By This, in fusible conductor 13,72,21, the lateral edge portion of conductor band 96 becomes the 1st lateral edge portion 13c, 72c, 21c, conductor band 96 Section is cut as the 2nd lateral edge portion 13d, 72d, 21d.In addition, the 1st lateral edge portion 13c, 72c, 21c is covered by refractory metal, 2nd lateral edge portion 13d, 72d, 21d exposes the refractory metal for surrounding periphery end face (the cutting section of conductor band 96) outward Layer 91 and the low-melting-point metal layer 92 seized on both sides by the arms by high melting point metal layer 91.
Label declaration
1 short-circuit component；2 switches；3 supply paths；10 insulating substrates；The surface 10a；The back side 10b；11 the 1st electricity Pole；11a external connection terminals；12 the 2nd electrodes；12a external connection terminals；13 the 1st fusible conductors；13a melts conductor； 14 heaters；15 grafting materials；17 insulating layers；18 heater extraction electrodes；18a lower layer part；18b upper layer part；19 hairs Hot body electrode；21 auxiliary fusible conductors；23 insulating layers；24 solder flux；28 external circuits；32 current controling elements；35 inspections Survey element；50 short-circuit components；51 the 1st circuits；53 external power supplies；60 short circuit currents；70 short-circuit components；71 heaters supply Electrode；72 the 2nd fusible conductors；91 high melting point metal layers；92 low-melting-point metal layers；93 opening portions；94 opening portions；95 Opening portion；96 conductor bands.

Claims (27)

1. a kind of short-circuit component, wherein having:
1st electrode；
2nd electrode is arranged with the 1st electrode adjacent；
1st fusible conductor is supported on the 1st electrode using grafting material, by fusing to electric across the described 1st, the 2nd Interpolar and agglomerate, make the described 1st, the 2nd electric pole short circuit；And
Heater heats the 1st fusible conductor,
1st fusible conductor be not involved between the 1st electrode and the 2nd electrode from the 1st electrode to the 2nd electrode Opposite side is highlightedly supported.
2. short-circuit component as described in claim 1, wherein
In the 1st electrode and the 2nd electrode opposite side, electricity is drawn equipped with the heater being electrically connected with the heater Pole,
The heater extraction electrode supports one end of the 1st fusible conductor, to be formed via the 1st electrode and described The supply path that 1st fusible conductor powers to the heater.
3. short-circuit component as claimed in claim 2, wherein the melting because of the 1st fusible conductor between the described 1st, the 2nd electrode Change conductor after short circuit, is truncated between the 1st electrode and the heater extraction electrode.
4. short-circuit component as claimed in claim 3, wherein the heater extraction electrode configuration is than the described 1st, the 2nd electricity Pole is further from the position of the heater.
5. short-circuit component as described in claim 1, wherein
In the 2nd electrode and the 1st electrode opposite side or the 1st electrode and the 2nd electrode opposite side, if There is the heater extraction electrode being electrically connected with the heater,
The heater extraction electrode constitute with the described 1st, the 2nd electrode and the 1st fusible conductor be electrically isolated to the hair The supply path of hot body.
6. short-circuit component as claimed in claim 5, wherein including
Heater current electrode is adjacently arranged with the heater extraction electrode；And
2nd fusible conductor is carried across between the heater extraction electrode and the heater current electrode.
7. short-circuit component as described in claim 1, wherein having:
The heater extraction electrode being electrically connected with the heater,
Heater current electrode is adjacently arranged with the heater extraction electrode and connect with the 1st electrode；And
2nd fusible conductor is carried across between the heater extraction electrode and the heater current electrode,
It is formed and draws electricity via the 1st electrode, the heater current electrode, the 2nd fusible conductor and the heater Extremely to the supply path of heater power supply.
8. short-circuit component as claimed in claims 6 or 7, wherein the 1st fusible conductor fusing, in the described 1st, the 2nd electrode Between due to the fusing conductor of the 1st fusible conductor after short circuit, the 2nd fusible conductor fusing, the heater extraction electrode And it is truncated between the heater current electrode.
9. short-circuit component as claimed in claim 8, wherein the 1st fusible conductor configuration is more than the 2nd fusible conductor Close to the position of the heater.
10. short-circuit component as claimed in claim 8, wherein the 1st fusible conductor is formed as sectional area can than the described 2nd Molten conductor is small.
11. short-circuit component as claimed in claim 8, wherein the 1st fusible conductor fusing point is lower than the 2nd fusible conductor.
12. as claim 1~7 described in any item short-circuit components, wherein the heater via insulating layer and with it is described 1st electrode or the 1st electrode and the 2nd electrode are continuous.
13. short-circuit component as claimed in claim 12, wherein
It is connected with auxiliary fusible conductor in the 2nd electrode,
The heater is also continuous with the 2nd electrode via the insulating layer.
14. such as described in any item short-circuit components of claim 1~7, wherein a part of the 1st and/or the 2nd electrode The support body supports being made of pyroconductivity for 10W/mK insulating materials below.
15. short-circuit component as claimed in claim 12, wherein a part of the 1st and/or the 2nd electrode is by by heat transfer Rate is the support body supports that 10W/mK insulating materials below is constituted.
16. such as described in any item short-circuit components of claim 1~7, wherein the volume of the 1st fusible conductor is at least 1st electrode with it is more than the area of the side of 2nd electrode face-off and described 1st, the 2nd interelectrode distance product.
17. such as described in any item short-circuit components of claim 1~7, wherein including
1st wiring, it is continuous with the 1st electrode；And
2nd wiring, it is continuous with the 2nd electrode,
Described 1st, the 2nd wiring surface is covered by insulation.
18. such as described in any item short-circuit components of claim 1~7, wherein
1st electrode has sectional area locally biggish major diameter portion,
The fusing conductor of 1st fusible conductor is agglomerated in the major diameter portion.
19. such as described in any item short-circuit components of claim 1~7, wherein the 1st fusible conductor is Sn or is with Sn The alloy or Pb of principal component or using Pb as the alloy of principal component.
20. such as described in any item short-circuit components of claim 1~7, wherein the 1st fusible conductor is stacking low melting point The composite material of metal and refractory metal.
21. such as described in any item short-circuit components of claim 6~7, wherein the 2nd fusible conductor is Sn or is with Sn The alloy or Pb of principal component or using Pb as the alloy of principal component.
22. short-circuit component as claimed in claims 6 or 7, wherein the 2nd fusible conductor is stacking low-melting-point metal and height The composite material of melting point metals.
23. short-circuit component as claimed in claim 20, wherein the low-melting-point metal is Sn or the conjunction containing 40% or more Sn Gold, the refractory metal are Ag, Cu or using Ag or Cu as the alloy of principal component.
24. short-circuit component as claimed in claim 22, wherein the low-melting-point metal is Sn or the conjunction containing 40% or more Sn Gold, the refractory metal are Ag, Cu or using Ag or Cu as the alloy of principal component.
25. such as described in any item short-circuit components of claim 1~7, wherein the 1st fusible conductor is formed with plate, tool There is the area with the 2 times or more of the connection area of the 1st electrode.
26. as claim 1~7 described in any item short-circuit components, wherein the 1st fusible conductor be threadiness, have with The length of the 2 times or more of the connection length of 1st electrode.
27. such as described in any item short-circuit components of claim 1~7, wherein the described 1st, described in the interval ratio of the 2nd electrode 1st, the width of the 1st electrode on the extended line of the 2nd electrode gap is small.
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