CN201562649U - Direct current fuse link for protecting semiconductor devices - Google Patents
Direct current fuse link for protecting semiconductor devices Download PDFInfo
- Publication number
- CN201562649U CN201562649U CN2009202121556U CN200920212155U CN201562649U CN 201562649 U CN201562649 U CN 201562649U CN 2009202121556 U CN2009202121556 U CN 2009202121556U CN 200920212155 U CN200920212155 U CN 200920212155U CN 201562649 U CN201562649 U CN 201562649U
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- melt
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- fusion tube
- direct current
- link
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Abstract
The utility model discloses a direct current fuse link for protecting semiconductor devices, which comprises a fusion tube, a plurality of fusants, an arc extinguishing medium and a pair of contact knives. A heat dissipating cavity is arranged in the centre of the end face of the fusion tube, and a plurality of fusant cavities are evenly distributed on the peripheral end face of the heat dissipating cavity; a solder bridge is respectively disposed on one surface of each fusant; a plurality of large pore rows are distributed on the surface of each fusant with a consistent spacing, a small pore row is arranged on one side of each large pore row, each large pore row comprises a plurality of large-diameter pores with same size, a longitudinal spacing delta1 and a diameter D1, each small pore row includes a plurality of small-diameter pores with same size, a longitudinal spacing delta2 and a diameter D2, and a square wave is formed by bending each fusant with one large pore row and one small pore row as bending marks and respectively inserted into the fusant cavity of the fusion tube; the arc extinguishing medium is filled between fusant cavities and the fusants; and the pair of contact knives are tightly fixed at two ends of the fusion tube.
Description
Technical field
The utility model relates to a kind of semiconductor equipment protection and uses the direct current fuse-link, and it is applicable to that rated direct voltage is 1800V DC, and rated current is 250A to 500A.
Background technology
Semiconductor equipment is protected with the usefulness of fuse-link (hereinafter to be referred as fuse-link) as the short-circuit protection of the complete set of equipments of rectifying installation and relevant device (comprising frequency converter, soft start etc.), semiconductor element and composition thereof, and is applicable in the DC loop.Fuse-link comprises fusion tube, be located at the melt in the fusion tube and be located at the contact knife at fusion tube two ends, is welded with Xi Qiao on the every melt, and has the isodiametric aperture of ordered series of numbers.When bigger short circuit current passed through melt, the narrow neck between the aperture was because heating effect of current is heated rapidly, and local temperature raises rapidly until melt fusing with a minute deenergizing; And when less overload current when the melt, the Xi Qiao that fusing point is lower at first melts, dystectic melt itself since metallurgical effect be dissolved in the liquid tin bridge, thereby disconnection melt and with the electric current disjunction.
Great majority design for protecting alternating current circuit and components and parts in the present like product; their rated voltage generally also all is no more than 1000V, is difficult to satisfy the protection requirement in the occasion of the high pressure occasion more than voltage 1000V and the direct current components and parts that need protection.In addition, common fuse-link adopts common earthenware as fusion tube, and its resistance to elevated temperatures and mechanical property are relatively poor.
Summary of the invention
The purpose of this utility model is not high at the existing product electric pressure; rated current is little; mostly be the present situation of alternating current circuit design; a kind of semiconductor equipment protection direct current fuse-link is provided; its electric pressure is higher, can directly apply in high voltage circuit and the environment, and rated current is bigger; bigger capacity can be provided, be more suitable for protecting big capacity circuit.
The technical scheme that realizes above-mentioned purpose is: the direct current fuse-link is used in a kind of semiconductor equipment protection, comprises fusion tube, some melts, arc-extinguishing medium and a pair of contact knifes, wherein,
The end face central authorities of described fusion tube offer a heat radiation cavity, and on the end face on every side of this heat radiation cavity uniform several melt cavitys of offering;
One surface of described every melt is gone up and is equipped with Yi Xiqiao in the center near the melt length direction;
As one man offer the multiple row macropore and offer a row aperture respectively in one side of every row macropore at interval at its length direction on the surface of described every melt, containing a plurality of measure-alike and longitudinal separation distances in described every row macropore is the large diameter hole of D1 for δ 1 diameter, containing a plurality of measure-alike and longitudinal separation distances in described every row aperture is the small diameter bore of D2 for δ 2 diameters, and every melt is to intert correspondingly in the melt cavity of described fusion tube after folding line is bent into square-wave form with a row macropore and a row aperture all;
Described arc-extinguishing medium is filled between each melt cavity and the melt;
Two ends and its inner surface that described a pair of contact knife is fastened on fusion tube are connected with the two ends of every melt respectively.
The direct current fuse-link is used in above-mentioned semiconductor equipment protection, wherein, is being horizontal mounting hole near contained a plurality of large diameter holes in the row macropore at described melt length direction center, and also is provided with a row aperture in addition between this a row macropore and a row aperture on one side.
The direct current fuse-link is used in above-mentioned semiconductor equipment protection, wherein, and described δ 2=2 δ 1, described D1=3.5D2.
The direct current fuse-link is used in above-mentioned semiconductor equipment protection, and wherein, another surface of described melt is gone up and connected a pad.
The direct current fuse-link is used in above-mentioned semiconductor equipment protection, and wherein, described fusion tube outer surface is a four-prism, and the cross section of described heat radiation cavity is square, and the cross section of described melt cavity is rectangular.
The direct current fuse-link is used in above-mentioned semiconductor equipment protection, and wherein, described fusion tube adopts No. 95 aluminium oxide ceramics insulating material to make.
The semiconductor equipment protection of the present utility model technical scheme of direct current fuse-link compared with prior art has following advantage:
1) electric pressure is higher, can directly apply in high voltage circuit and the environment;
2) rated current is bigger, and bigger capacity can be provided, and is more suitable for protecting big capacity circuit;
3) operating chacteristics is stable, and is more reliable to the protection of circuit;
4) structure of melt has been improved electrical property and hot property, and temperature rise and heat-sinking capability all are improved;
5) aim at the design of protection DC circuit, more can be competent at the protection task of DC circuit occasion;
6) adopt No. 95 aluminium oxide ceramics as fusion tube, make the profile of fuse-link more attractive in appearance;
7) support the Two bors d's oeuveres row to close, the flexibility of practice is higher.
Description of drawings
Fig. 1 is the structural representation of semiconductor equipment protection of the present utility model with the direct current fuse-link;
Fig. 2 is the end view of semiconductor equipment protection of the present utility model with fusion tube in the direct current fuse-link;
Fig. 3 is semiconductor equipment protection of the present utility model structural representation after the melt expansion in the direct current fuse-link;
Fig. 4 is the sectional view of semiconductor equipment protection of the present utility model with the melt in the direct current fuse-link.
Embodiment
In order to understand the technical solution of the utility model better, below by embodiment particularly and be described in detail in conjunction with the accompanying drawings:
See also Fig. 1 to Fig. 4, the direct current fuse-link is used in semiconductor equipment of the present utility model protection, comprises fusion tube 1, four melts 2, arc-extinguishing medium 4, a pair of contact knife 5 and indication pieces 6, wherein,
The outer surface of fusion tube 1 is a four-prism, and it adopts No. 95 aluminium oxide ceramics insulating material to make, and has good high temperature resistant and mechanical property, and is also comparatively attractive in appearance in appearance; Offer a radial perforation on its tube wall; Its end face central authorities offer the heat radiation cavity 11 that a cross section is square, uniformly on the end face around this heat radiation cavity 11 offer four melt cavitys 12 that the cross section is rectangular;
Every melt 2 adopts the fine silver of 99.9% content to be processed into the thin slice band with effective width, and its surface is gone up and is equipped with one in the center near melt 2 length directions and indulges the tin bridge 20 of striding the melt width;
On the surface of every melt 2 its length direction with the spacing distance be L offer multiple row macropore 21 and offer a row aperture 22 in the other L1 distance in the left side of every row macropore 21 respectively, containing a plurality of measure-alike and longitudinal separation distances in every row macropore 21 is the large diameter hole of D1 for δ 1 diameter, containing a plurality of measure-alike and longitudinal separation distances in every row aperture 22 is the small diameter bore of D2 for δ 2 diameters, and every melt 2 is to intert correspondingly in the melt cavity 12 of fusion tube 1 after folding line is bent into square-wave form with a row macropore 21 and a row aperture 22 all; δ 2=2 δ 1 wherein, D1=3.5D2;
Arc-extinguishing medium 4 is a quartz sand, and it is filled between each melt cavity and the melt, in order to consolidation melt 2;
Two ends and its inner surface that a pair of contact knife 5 is fastened on fusion tube 1 are connected with the two ends of every melt 2 respectively;
In an illustrated embodiments, be horizontal mounting hole near contained a plurality of large diameter holes in the row macropore 21 at melt 2 length direction centers, and between this a row macropore 21 and a row aperture 22 on one side, also be provided with a row aperture 22 ' in addition; In addition since melt 2 be the fine silver material, and thinner thickness (be 0.08～0.10mm), after bending, become softer, in assembling process, melt 2 easy deformation when passing fusion tube 1; Therefore the additional pad 3 that connects on another surface of melt 2 makes melt 2 in the process of passing fusion tube 1 support arranged, and can make things convenient for interting of melt 2, and melt 2 is not yielding.
Semiconductor equipment protection direct current fuse-link of the present utility model; by changing isodiametric multiple row aperture on the melt into big aperture combining structure; not only improved its electrical property; improved the voltage and current grade; its heat dispersion is improved; cooperate the bigger heat radiation cavity of fusion tube central authorities, the temperature rise situation when effectively having improved work.
When circuit is short-circuited fault, when bigger short circuit current passes through melt 2, heated rapidly owing to heating effect of current apart from narrow neck between the macropore for δ 1, local temperature rising rapidly fuses with a minute deenergizing until melt 2; And when less overload current when the melt, the tin bridge 10 that fusing point is lower at first melt, dystectic melt 2 itself since metallurgical effect be dissolved in the liquid tin bridge 10, thereby disconnection melt and with the electric current disjunction.
In sum, compare with original fuse-link, the electric pressure of dc fuse of the present utility model is higher, capacity is bigger, be applicable to 1800V DC, 250A to 500A occasion, reliable and stable, the long service life of operating chacteristics not only, its electrical property and high temperature resistant, mechanical property is also all very outstanding.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.
Claims (6)
1. the direct current fuse-link is used in a semiconductor equipment protection, comprises fusion tube, some melts, arc-extinguishing medium and a pair of contact knifes, it is characterized in that,
The end face central authorities of described fusion tube offer a heat radiation cavity, and on the end face on every side of this heat radiation cavity uniform several melt cavitys of offering;
One surface of described every melt is gone up and is equipped with Yi Xiqiao in the center near the melt length direction;
As one man offer the multiple row macropore and offer a row aperture respectively in one side of every row macropore at interval at its length direction on the surface of described every melt, containing a plurality of measure-alike and longitudinal separation distances in described every row macropore is the large diameter hole of D1 for δ 1 diameter, containing a plurality of measure-alike and longitudinal separation distances in described every row aperture is the small diameter bore of D2 for δ 2 diameters, and every melt is to intert correspondingly in the melt cavity of described fusion tube after folding line is bent into square-wave form with a row macropore and a row aperture all;
Described arc-extinguishing medium is filled between each melt cavity and the melt;
Two ends and its inner surface that described a pair of contact knife is fastened on fusion tube are connected with the two ends of every melt respectively.
2. semiconductor equipment protection direct current fuse-link according to claim 1; it is characterized in that; be horizontal mounting hole near contained a plurality of large diameter holes in the row macropore at described melt length direction center, and between this a row macropore and a row aperture on one side, also be provided with a row aperture in addition.
3. the direct current fuse-link is used in semiconductor equipment protection according to claim 1 and 2, it is characterized in that described δ 2=2 δ 1, described D1=3.5D2.
4. the direct current fuse-link is used in semiconductor equipment protection according to claim 1 and 2, it is characterized in that, another surface of described melt is gone up and connected a pad.
5. the direct current fuse-link is used in semiconductor equipment protection according to claim 1, it is characterized in that described fusion tube outer surface is a four-prism, and the cross section of described heat radiation cavity is square, and the cross section of described melt cavity is rectangular.
6. the direct current fuse-link is used in semiconductor equipment protection according to claim 1, it is characterized in that, described fusion tube adopts No. 95 aluminium oxide ceramics insulating material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202121556U CN201562649U (en) | 2009-11-10 | 2009-11-10 | Direct current fuse link for protecting semiconductor devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202121556U CN201562649U (en) | 2009-11-10 | 2009-11-10 | Direct current fuse link for protecting semiconductor devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201562649U true CN201562649U (en) | 2010-08-25 |
Family
ID=42627802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202121556U Expired - Lifetime CN201562649U (en) | 2009-11-10 | 2009-11-10 | Direct current fuse link for protecting semiconductor devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201562649U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364658A (en) * | 2011-11-15 | 2012-02-29 | 浙江正泰机床电气制造有限公司 | Design scheme for small-volume high-capacity low-voltage fuse |
| CN102403173A (en) * | 2010-09-09 | 2012-04-04 | 上海电器陶瓷厂有限公司 | Quick fuse for protection of semiconductor devices |
| CN105428178A (en) * | 2015-12-29 | 2016-03-23 | 上海电器陶瓷厂有限公司 | Melt for DC fuse link |
-
2009
- 2009-11-10 CN CN2009202121556U patent/CN201562649U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403173A (en) * | 2010-09-09 | 2012-04-04 | 上海电器陶瓷厂有限公司 | Quick fuse for protection of semiconductor devices |
| CN102364658A (en) * | 2011-11-15 | 2012-02-29 | 浙江正泰机床电气制造有限公司 | Design scheme for small-volume high-capacity low-voltage fuse |
| CN102364658B (en) * | 2011-11-15 | 2014-03-12 | 浙江正泰机床电气制造有限公司 | Small-volume high-capacity low-voltage fuse with rated current of 600A |
| CN105428178A (en) * | 2015-12-29 | 2016-03-23 | 上海电器陶瓷厂有限公司 | Melt for DC fuse link |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100825 |
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| CX01 | Expiry of patent term |