CN104347331A - Fuse - Google Patents
Fuse Download PDFInfo
- Publication number
- CN104347331A CN104347331A CN201410326925.5A CN201410326925A CN104347331A CN 104347331 A CN104347331 A CN 104347331A CN 201410326925 A CN201410326925 A CN 201410326925A CN 104347331 A CN104347331 A CN 104347331A
- Authority
- CN
- China
- Prior art keywords
- fuse
- electrodes
- pair
- fuse part
- insulative substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 12
- 230000008961 swelling Effects 0.000 claims description 3
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000007799 cork Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 238000010891 electric arc Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011469 building brick Substances 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 229910052718 tin Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229910000743 fusible alloy Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 238000005477 sputtering target Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
- H01H85/06—Fusible members characterised by the fusible material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
- H01H85/08—Fusible members characterised by the shape or form of the fusible member
Landscapes
- Fuses (AREA)
Abstract
The invention provides a high voltage resistant and minimized fuse. The fuse has: an insulating substrate (2); a couple of electrodes (3) formed on the insulating substrate; a fuse portion (4), two ends of which are connected with the couple of electrodes; and an insulating encapsulating material at least covering the fuse portion on the insulating substrate, wherein the fuse portion is formed at the middle portion between the two ends in a manner that at least one portion of the fuse portion rises, and a space (S) at least crossing between the couple of electrodes is disposed between the middle portion and the insulating substrate. The fuse portion is substantially corrugated plate shaped cross-cutting a substantially corrugated plate shaped section between the couple of electrodes.
Description
Technical field
The present invention relates to a kind of fuse being protected electronic building brick and circuit etc. when producing overcurrent or abnormal temperature in the electric circuit of automobile etc. by fusing.
Background technology
Usually, in automobile and electronic product etc., fuse is assembled with in order to protecting electronic building brick and circuit etc. under overcurrent and abnormal temperature.Especially in recent years, be equipped with multiple battery and capacitor in hybrid electric vehicle and electric motor car etc., and also use fuse in the protective circuit relevant to these.
In the past, in the fuse that height is withstand voltage, need profile to be set as in order to ensure insulation distance comparatively large, and in order to use under big current, need for preventing electric arc or the rapid structure receiving arc.Further, in order to miniaturization, propose there is the method (such as, referenced patent document 1) using the modelling fuses such as resin.
Patent documentation 1: Japanese Patent Publication 2011-243388 publication
Following problem is left in above-mentioned technology in the past.
Even if used in the fuse structure of the modelling fuse parts such as resin the problem that there is fuse part melting and also can not fuse or be difficult to fuse in the past.Especially, in the high voltage installation that hybrid electric vehicle and electric motor car etc. carry, in the process of control device miniaturization, require that fuse also has high withstand voltage characteristic and miniaturization.
Summary of the invention
The present invention completes in view of above-mentioned problem, its object is to provide a kind of high pressure resistant and can realize miniaturized fuse.
The present invention have employed following structure to solve above-mentioned problem.That is, the feature of the fuse involved by the 1st invention is to possess: insulative substrate; Pair of electrodes, is formed in described insulative substrate; Fuse part, its two ends are connected with described pair of electrodes; And insulating properties encapsulating material, described insulative substrate at least covers described fuse part, wherein, described fuse part is formed at the pars intermedia between described two ends in the mode of swelling at least partially, further, be provided with between described pars intermedia and described insulative substrate at least across the space between described pair of electrodes.
In this fuse, be provided with at least across the space between pair of electrodes between pars intermedia and insulative substrate, therefore when fuse part melting, owing to there is space in bottom, thus shape changes and easily moves in space, even and if outside also can be fused like a cork by the encapsulation of the insulating properties encapsulating material such as resin.Further, by be set as the space of fuse part bottom improving more greatly withstand voltage properties and can fully guarantee to receive arc distance from.
The feature of the described fuse involved by the 2nd invention is, in the 1st invention, the described fuse part section shape be formed as described in crosscut between pair of electrodes is roughly wavy roughly ripple tabular.
That is, in this fuse, the fuse part section shape be formed as between crosscut pair of electrodes is roughly wavy roughly ripple tabular, and therefore the rigidity of fuse part entirety improves, and can not be crushed when encapsulating outside and can form multiple space in bottom.
According to the present invention, play following effect.
Namely, according to fuse involved in the present invention, be provided with between pars intermedia and insulative substrate at least across the space between pair of electrodes, even if therefore outside is by encapsulation such as resins, also can fuse like a cork, simultaneously can high pressure resistant and fully guarantee to receive arc distance from.
Therefore, in fuse of the present invention, can be high pressure resistant and realize miniaturized, be especially preferably used as the protective circuit of the hybrid electric vehicle that is equipped with battery and capacitor and electric motor car etc.
Accompanying drawing explanation
Fig. 1 is the vertical view of the execution mode representing fuse involved in the present invention.
Fig. 2 is the A-A ' profile of Fig. 1.
Fig. 3 is the B-B ' profile of Fig. 1.
Embodiment
Below, referring to figs. 1 to Fig. 3, one execution mode of fuse involved in the present invention is described.
As shown in Figure 1 to Figure 3, the fuse system 1 of present embodiment possesses: insulative substrate 2; Pair of electrodes 3, is formed in insulative substrate 2; Fuse part 4, its two ends are connected with pair of electrodes 3; And insulating properties encapsulating material 5, insulative substrate 2 at least covers fuse part 4.
Above-mentioned fuse part 4 is formed at the pars intermedia between described two ends in the mode of swelling at least partially, and, be provided with between pars intermedia and insulative substrate 2 at least across the space S between pair of electrodes 3.
This fuse part 4 section shape be formed as between crosscut pair of electrodes 3 is roughly wavy roughly ripple tabular.That is, by fuse part 4 is set to roughly ripple tabular, multiple tunnel-shaped cavity (space S) extended along the direction linking pair of electrodes 3 in the gap between pars intermedia and insulative substrate 2, is formed.In addition, the bellows-shaped that mountain is rolled over and paddy is rolled over is repeated above-mentioned roughly wavy also comprising.
As the material of fuse part 4, the low-melting alloys such as such as Ag/Sn/Cu, Sn/Pb, Ag/Sn, Au/Sn/Cu or Au/Sn can be adopted.
Soldered under the state that fuse part 4 is flattened by the electrode 3 of bottom at its two ends, ultrasonic bonding or crimping.In addition, also can, under the state making the two ends of fuse part 4 contact with the electrode 3 of bottom, binding agent be used the side portion of fuse part 4 to be fixed in insulative substrate 2.Now, fuse part 4 and electrode 3 are electrically connected, but are not engaged with each other.
Above-mentioned pair of electrodes 3 can adopt such as electroplating film, vapor-deposited film or the metal film etc. of film forming by sputtering.Such as, electrode 3 carries out sputtering and the Cu film of film forming for using Cu sputtering target.
In addition, also between pair of electrodes 3, can form following fuse metal film by pattern, that is, its two ends are connected with pair of electrodes 3, and its width is narrower than pair of electrodes 3, and more carefully extends.Now, when fuse part 4 melting above fuse metal film, the fuse metal film fusing of below.In addition, when adopting fuse metal film, the thickness in preferred fuse portion 4 is set to the thickness of about 10 times of fuse metal film.
Above-mentioned insulative substrate 2 is such as the ceramic substrates such as AIN.
Above-mentioned insulating properties encapsulating material 5 such as can adopt epoxy resin and silicon cement etc.
In addition, in Fig. 1 to Fig. 3, pair of electrodes 3 is covered by insulating properties encapsulating material 5, but a part for electrode 3 and the not shown terminal Electrode connection in outside extending to insulating properties encapsulating material 5 in insulative substrate 2.
In the fuse 1 of present embodiment, when overcurrent flows through between pair of electrodes 3, fuse part 4 melting by resistance heating or heating.Now, the fuse part 4 of melting is easily out of shape because having space S in bottom, and fuses by take central portion as boundary separately mobile towards electrode 3 side of both sides.That is, become by the space S of the bottom of the fuse part 4 when melting the space moved freely, thus can blow out fuse portion 4 like a cork.In addition, in the fuse 1 of present embodiment, improve resistance to pressure by insulating properties encapsulating material 5, and suppress to produce electric arc or the electric arc that produces between electrode 3 promptly by receipts arc.
So, in the fuse 1 of present embodiment, be provided with at least across the space S between pair of electrodes 3 between pars intermedia and insulative substrate 2, therefore, when fuse part 4 melting, owing to having space S in bottom, thus shape changes and easily moves in space S, even and if outside encapsulated by insulating properties encapsulating material 5 and also can fuse like a cork.Further, be set as comparatively large by the space S of the bottom by fuse part 4, its withstand voltage properties improve and can fully guarantee to receive arc distance from.
Further, fuse part 4 section shape be formed as between crosscut pair of electrodes 3 is roughly wavy roughly ripple tabular, and therefore the rigidity of fuse part 4 entirety improves, and can not be crushed when encapsulating outside and can form multiple space S in bottom.
In addition, technical scope of the present invention is not limited to above-mentioned execution mode, without departing from the scope of spirit of the present invention can various change in addition.
Such as, as fuse part is preferably formed as roughly ripple tabular by above-mentioned execution mode, but, as long as pars intermedia protuberance and the shape in formation space, bottom at pars intermedia, then also can be other shapes.Such as, be the fuse part that the roughly box shape of trapezoidal shape or section are the general dome shape of arc-shaped as the rectangular shape of section and section, also can in the formation space, bottom of pars intermedia.
Symbol description
1-fuse, 2-insulative substrate, 3-electrode, 4-fuse part, 5-insulating properties encapsulating material, the space of S-fuse part bottom.
Claims (2)
1. a fuse, is characterized in that, possesses:
Insulative substrate;
Pair of electrodes, is formed in described insulative substrate;
Fuse part, its two ends are connected with described pair of electrodes; And
Insulating properties encapsulating material, described insulative substrate at least covers described fuse part,
Described fuse part is formed at the pars intermedia between described two ends in the mode of swelling at least partially, and, be provided with between described pars intermedia and described insulative substrate at least across the space between described pair of electrodes.
2. fuse according to claim 1, is characterized in that,
The described fuse part section shape be formed as described in crosscut between pair of electrodes is roughly wavy roughly ripple tabular.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-160518 | 2013-08-01 | ||
| JP2013160518A JP2015032424A (en) | 2013-08-01 | 2013-08-01 | Fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104347331A true CN104347331A (en) | 2015-02-11 |
Family
ID=52502723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410326925.5A Pending CN104347331A (en) | 2013-08-01 | 2014-07-10 | Fuse |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2015032424A (en) |
| CN (1) | CN104347331A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104599917A (en) * | 2015-02-14 | 2015-05-06 | 南京萨特科技发展有限公司 | Protecting element |
| CN107615440A (en) * | 2015-06-04 | 2018-01-19 | 迪睿合株式会社 | Fuse element, fuse-wire device, protection element, short-circuit component, switching device |
| CN111133548A (en) * | 2017-09-29 | 2020-05-08 | 株式会社村田制作所 | Chip fuse |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113506716B (en) * | 2021-08-17 | 2025-07-08 | 西安中熔电气股份有限公司 | Solid-state prefabricated arc extinguishing module |
-
2013
- 2013-08-01 JP JP2013160518A patent/JP2015032424A/en active Pending
-
2014
- 2014-07-10 CN CN201410326925.5A patent/CN104347331A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104599917A (en) * | 2015-02-14 | 2015-05-06 | 南京萨特科技发展有限公司 | Protecting element |
| CN104599917B (en) * | 2015-02-14 | 2017-03-08 | 南京萨特科技发展有限公司 | A kind of protection element |
| CN107615440A (en) * | 2015-06-04 | 2018-01-19 | 迪睿合株式会社 | Fuse element, fuse-wire device, protection element, short-circuit component, switching device |
| CN107615440B (en) * | 2015-06-04 | 2019-11-01 | 迪睿合株式会社 | Fuse element, fuse-wire device, protection element, short-circuit component, switching element |
| CN111133548A (en) * | 2017-09-29 | 2020-05-08 | 株式会社村田制作所 | Chip fuse |
| US11211221B2 (en) | 2017-09-29 | 2021-12-28 | Murata Manufacturing Co., Ltd. | Chip-type fuse |
| CN111133548B (en) * | 2017-09-29 | 2022-06-28 | 株式会社村田制作所 | Chip fuse |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015032424A (en) | 2015-02-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150211 |