CN101859665A - Alloy type thermal fuse with high ampere capacity - Google Patents
Alloy type thermal fuse with high ampere capacity Download PDFInfo
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- CN101859665A CN101859665A CN200910130438A CN200910130438A CN101859665A CN 101859665 A CN101859665 A CN 101859665A CN 200910130438 A CN200910130438 A CN 200910130438A CN 200910130438 A CN200910130438 A CN 200910130438A CN 101859665 A CN101859665 A CN 101859665A
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Abstract
The invention relates to an alloy type thermal fuse with high ampere capacity, which can act as a protective action to devices, such as a power accumulator and the like, with the properties of large current. When the devices, such as a power battery and the like, are in an abnormal temperature rise state, the alloy type thermal fuse can be automatically switched off so as to prevent the occurrence of the accidents of explosion or fire and the like of the devices, such as the power accumulator and the like, because of overtemperature. Because the alloy type thermal fuse and the devices with the properties of the large current run in series, the alloy type thermal fuse must bear large current. In order to solve this problem, a plurality of alloy wires with low melting point (containing two alloy wires with low melting point) are welded between two metal electrodes with favorable weldability in parallel, and the periphery of each alloy wire with low melting point is also provided with a fusing assistant material, so that the condition that each alloy wire with low melting point is quickly and completely retracted to the electrodes can be promoted after each alloy wire with low melting point is heated and fused, thereby switching off the large current safely.
Description
Technical field
The present invention relates to a kind of alloy-type temperature fuse of high ampere capacity; can the overheated of device that have large current characteristic as power accumulator etc. be shielded; when devices such as electrokinetic cell are in abnormal temperature rising state; alloy-type temperature fuse can automatic disconnection, in case the setting off an explosion or the generation of accident such as on fire because of overheated of devices such as stopping power storage battery.
Background technology
Entered since 21 century, global auto industry faces the dual-pressure of the energy and environmental problem jointly.The exploitation of novel storage battery and use provide a kind of brand-new energy source of car to developing of automobile industry.In the use of storage battery, excessive discharging current or incident cause the incident of storage battery heating or blast to occur repeatedly.The overtemperature protection mode of power accumulator in the past mainly is to use electric current restricted type fuse, but can not effectively solve the contradiction of operating current and fault current; Or the electronic circuit that uses the band temperature sensor drives the discharging current that relay or circuit breaker cut off storage battery, and for example the United States Patent (USP) number is that US 5070427 discloses a kind of li-ion cell protection with thermal switch (ThermalSwitch for Battery Protection); US 5357184 discloses a kind of multi-battery charger fuse system (Fuse System for a Multiple Battery Charger); US 5879832 has disclosed a kind of tie breaker (Current Interrupter for Electrochemical Cells) that is used for electrochemical cell; And for example the United States Patent (USP) number is that US 6608470 discloses the overshoot protection apparatus and method that lithium base rechargeable battery is used (Overcharge Protection Device and Methods for Lithium Rechargeable Batteries); Also having the United States Patent (USP) number is that US 5097247 discloses the thermal excitation fuse unit (Heat Actuated Fuse Apparatus with solder link) with scolder concatenator; these above-mentioned accumulator protecting measures; though can protect the safety of charging and discharging of accumulator, but the equal more complicated of safeguard measure.
As everyone knows; alloy-type temperature fuse is comparatively responsive to variations in temperature; the main temperature of its action in response to protected device; but it is insensitive to electric current; when the electric current of flowing through significantly surpasses rated operational current; though alloy-type temperature fuse also can fuse, response speed does not far reach the effect of electric current restricted type fuse.If a kind of have a discharging current that can bear storage battery, can experience the temperature rise of storage battery again and the alloy-type temperature fuse that moves, so, just can make the simplification that becomes of the hot safeguard measure of storage battery.But the current-carrying capacity of currently marketed Thermal Cutoffs is quite low, can not carry the big discharging current of power accumulator.
The content of invention
The purpose of invention is in order to have overcome the shortcoming that existing Thermal Cutoffs can not carry out the heat protection to jumbo power accumulator; the heat protection that provides a kind of alloy-type temperature fuse with high ampere capacity to be used as power accumulator is oversimplified the measure of charging and discharging of accumulator resist technology.Also provide easy overtemperature protection measure for having the large current characteristic device.
The technical scheme of invention
In order to solve existing technical problem, the present invention is achieved through the following technical solutions.
The invention provides a kind of alloy-type temperature insurance with high ampere capacity.Particularly a kind ofly be used for the Thermal Cutoffs of heat protection that jumbo power accumulator etc. has the device of large current characteristic.Because alloy-type temperature fuse and storage battery series operation, alloy-type temperature fuse must carry the high discharging current of power accumulator.In order to address this problem, take many (containing two) low-melting alloy silk parallel connections, also flux material to be set around each root low-melting alloy silk, make every low-melting alloy silk after melted by heat, can promote every low-melting alloy silk apace and be fully retracted into electrode.Use such method just can produce a kind of alloy-type temperature fuse of high ampere capacity.
The formation of the alloy-type temperature fuse of this ampere-capacity is such: the cylindrical metal electrode of two good weldabilities is arranged, for the metal electrode post is separated into predetermined distance, have one to fix two electrodes by insulating material; There are many low-melting alloy silks to be welded on abreast between two columnar electrodes, the disconnected agent material of fluxing is set around each root low-melting alloy silk, so just formed a plurality of alloy-type temperature fuse monomers, also had one by engineering plastics, ceramic material, metal material or the shell that combines by above-mentioned material.The epoxy resin that two metal electrode prolongations pass can stretches out shell.
The formation of the alloy-type temperature fuse of this ampere-capacity also can be such: two sheet metal electrodes that good weldability is arranged, on two sheet metal electrodes, have the through hole that is used to weld the low-melting alloy silk, and the lead to the hole site on two pellet electrodes is corresponding fully consistent; For metal electrode being separated into predetermined distance, there is one to support two heat-conductivity conducting metal electrodes by insulating material or the insulation column more than 1; Many low-melting alloy silks are arranged, around each root low-melting alloy silk, be provided with the material that contains the disconnected agent of fluxing, so just formed a plurality of alloy-type temperature fuse monomers, their distribution can be arranged in parallel into plane, flexure plane, circular face or a ring surface between two electrodes; Also has one by engineering plastics, ceramic material, metal material or the shell that combines by above-mentioned material; Two metal electrodes stretch out shell by the epoxy resin of can, and shell and the electrode that reaches shell can make between the protected device of alloy-type temperature fuse of high ampere capacity thermal coupling closely.
Useful effect
Even the enlarged diameter of the low-melting alloy silk of common alloy-type temperature fuse; because volume is excessive; the difficulty that the alloy that has increased fusing is wriggled in itself and the contraction under the effect of the interfacial tension between the disconnected agent material of fluxing; even have can't the safety cut-off electric current grave danger; therefore can not respond protected heating temp fast, be difficult to obtain the Thermal Cutoffs of the high ampere capacity of good protection effect.The present invention can either realize high ampere capacity by taking the method for many alloy silks parallel connection, can respond overheated rapidly again and disconnects; Now can produce the alloy-type temperature fuse that operating current surpasses 40 amperes; also can produce by alloy-type temperature fuse greater than the pulse current of the 8/20 microsecond waveform of 20kA; even can also produce the Thermal Cutoffs of tolerance greater than the pulse current of the 8/20 microsecond waveform of 100KA; so, just can be used for the cutting off the electricity supply fault current of device, surge protective device (SPD).
Description of drawings
Accompanying drawing 1 is the elevation cross-sectional view of the embodiment 1 of the method according to this invention.
Accompanying drawing 2 is side cutaway views of the embodiment 1 of the method according to this invention.
Accompanying drawing 3 is three-dimensional internal anatomys of the embodiment 1 of the method according to this invention.
Accompanying drawing 4 is front section views of the embodiment 2 of the method according to this invention
Accompanying drawing 5 is side cutaway views of the embodiment 2 of the method according to this invention.
Accompanying drawing 6 is three-dimensional internal anatomys of the embodiment 2 of the method according to this invention.
Embodiment
Embodiment 1, below in conjunction with accompanying drawing 1, the present invention will be further described with embodiment for accompanying drawing 2 and accompanying drawing 3, and therein, what stated is for preferred embodiment purpose of the present invention is described, rather than in order to limit above-mentioned purpose.Accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3 are respectively elevation cross-sectional view, side cutaway view and the three-dimensional internal anatomys of alloy-type temperature fuse of the high ampere capacity of preferred specific embodiment of the present invention.In described embodiment, comprise a shell 15 in the alloy-type temperature fuse of high ampere capacity, in shell 15, be equipped with the sub-assembly that constitutes by following part: two conductive and heat- conductive metal electrode 11a and 11b are arranged, in the present embodiment, the conductive and heat-conductive metal electrode is a cylindrical shape, support above-mentioned two conductive and heat- conductive metal electrode 11a and 11b with insulation board 18, to guarantee that these two metal electrode 11a and 11b are substantially parallel, two metal electrodes have prolongation 11aa and 11bb respectively as outer lead-out wire; Two metal electrode 11a and 11b are used for welding many low-melting alloy silk 13 two ends, so just form an alloy-type temperature fuse body; The low-melting alloy silk can have multiple distribution mode; The low-melting alloy silk can melt under predetermined fusion temperature; At the disposed about of the low-melting alloy silk disconnected agent material 14 of fluxing, when the heat delivered in the external world to the low-melting alloy silk, when its temperature met or exceeded the predetermined fusion temperature of alloy silk, all alloy silks all can melt disconnection; The disconnected agent material 14 of fluxing not only promotes the fusing of alloy silk, but also promotes the alloy silk to withdraw to two metal electrodes.Again this alloy-type temperature fuse body is assembled in the shell 15; seal sealing with epoxy resin 12; two metal electrodes have prolongation 11aa and 11bb to expose outside by epoxy resin respectively; it is the lead-out wire that connects external circuit, also is with the attachment of finishing thermal coupling closely between the protected device.The radical of low-melting alloy silk depends on the size of the prospective current in the circuit.
Embodiment 2, below in conjunction with accompanying drawing 4, accompanying drawing 5, the another kind of embodiment of accompanying drawing 6, the invention will be further described, therein, accompanying drawing 4, accompanying drawing 5 and accompanying drawing 6 are respectively the elevation cross-sectional view of alloy-type temperature fuse of the high ampere capacity of this embodiment, side cutaway view and three-dimensional internal anatomy, in described embodiment, comprise a shell 15 in the alloy-type temperature fuse of high ampere capacity, in shell 15, be equipped with the sub-assembly that constitutes by following part: two conductive and heat- conductive metal electrode 11a and 11b are arranged, in this specific embodiment, the conductive and heat-conductive metal electrode is plate shaped, on two metal electrodes, have a plurality of through holes that are arranged in an array, and the lead to the hole site on two electrodes is corresponding fully consistent, many low-melting alloy silk 13a are arranged, 13b, pass through hole, alloy silk two ends are welded on the metal electrode respectively, 8 low-melting alloy silks are arranged in this embodiment, be not limited to 8, can adjust the radical of low-melting alloy silk as required, to obtain the alloy-type temperature fuse of different ampere-capacities; Around every low-melting alloy silk, be provided with the disconnected agent 14 of fluxing, with insulation board 18 the prolongation 11aa and the 11bb of the metal electrode that forms outside lead are separated, on the prolongation 11aa and 11bb and insulation board 18 of the heat-conductivity conducting metal electrode that forms outside lead, be provided with and be used for the alloy-type temperature fuse of high ampere capacity is assembled to the hole 17 of external circuit.Again this alloy-type temperature fuse body is assembled in the shell 15, seals with epoxy resin 12 again, just constitute the alloy-type temperature fuse of a complete high ampere capacity.
Claims (5)
1. the alloy-type temperature fuse of a high ampere capacity comprises a shell, two metal electrodes, and many (containing two) low-melting alloy silks, a kind of disconnected agent material of fluxing, one or more insulation columns are used for the epoxy resin of can oral area; It is characterized in that, the alloy-type temperature fuse of described high ampere capacity is connected on many (containing two) low-melting alloy wire bonds on two conductive and heat-conductive metal electrodes, formation is connected in parallel, above-mentioned conductive and heat-conductive metal electrode is separated by the pillar that above-mentioned insulating material constitutes, and has also played the effect that makes two electrodes parallel; Each above-mentioned root alloy silk is all placed among the above-mentioned disconnected agent of fluxing surrounds, the above-mentioned disconnected agent of fluxing helps the fusing after-contraction of alloy silk, and can promptly fully impel the alloy silk to withdraw to two electrodes, above-mentioned fluxes disconnected agent in this process, has played certain arc extinguishing and insulating effect simultaneously; Above-mentioned conductive and heat-conductive metal electrode; many above-mentioned (containing two) low-melting alloy silks; pillar that is made of above-mentioned insulating material and above-mentioned the containing disconnected agent material of fluxing constitutes an assembly; above-mentioned assembly is placed to one by engineering plastics; ceramic material; in metal material or the shell that combines by above-mentioned material; opening with the epoxy sealing shell; make the prolongation of two metal electrodes reach the outside of shell; shell and the prolongation that reaches the metal electrode of enclosure make the alloy-type temperature fuse of high ampere capacity and between the device of heat protection thermal coupling are closely arranged.
2. according to the alloy-type temperature fuse of the right of asking for 1 described high ampere capacity, it is characterized in that, the cross sectional shape of described low-melting alloy silk can be circle or polygon, and the alloy silk can be arranged in parallel into plane, circular face or ring surface between two electrodes.
3. according to the alloy-type temperature fuse of the right of asking for 1 described high ampere capacity, it is characterized in that the insulating element that separates two conductive and heat-conductive metal electrodes can also be the insulating material flat board.
4. according to the alloy-type temperature fuse of the right of asking for 1 described high ampere capacity; its feature is that again the predetermined fusion temperature scope of above-mentioned low-melting alloy silk is between 70-183 ℃; wherein follow environmental protection requirement, can by unleaded, do not have cadmium and do not have the alloy that the metal material of mercury constitutes.
5. according to the alloy-type temperature fuse of the right of asking for 1 described high ampere capacity, its feature is that again the metal electrode of two above-mentioned conductive and heat-conductives both can be a column, also can be sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910130438A CN101859665A (en) | 2009-04-07 | 2009-04-07 | Alloy type thermal fuse with high ampere capacity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910130438A CN101859665A (en) | 2009-04-07 | 2009-04-07 | Alloy type thermal fuse with high ampere capacity |
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| CN101859665A true CN101859665A (en) | 2010-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910130438A Pending CN101859665A (en) | 2009-04-07 | 2009-04-07 | Alloy type thermal fuse with high ampere capacity |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011157230A1 (en) * | 2010-06-18 | 2011-12-22 | Xu Zhonghou | Large-current alloy type temperature fuse |
| CN102468090A (en) * | 2011-04-08 | 2012-05-23 | 厦门赛尔特电子有限公司 | Controlled fusing current protector |
| WO2012089124A1 (en) * | 2010-12-31 | 2012-07-05 | 厦门赛尔特电子有限公司 | Apparatus comprising thermal fuse and resistor |
| CN102710967A (en) * | 2012-05-22 | 2012-10-03 | 袁华安 | Cloud television system and method |
| CN106450124A (en) * | 2015-08-05 | 2017-02-22 | 三星Sdi株式会社 | Flexible battery |
| CN107087316A (en) * | 2017-04-28 | 2017-08-22 | 宁波柔碳电子科技有限公司 | A kind of method for excessive heating protection of graphene Electric radiant Heating Film and graphene Electric radiant Heating Film with overtemperature protection system |
| WO2017211295A1 (en) * | 2016-06-07 | 2017-12-14 | 厦门赛尔特电子有限公司 | Stack-type temperature safety device |
| CN110299272A (en) * | 2018-03-21 | 2019-10-01 | 厦门赛尔特电子有限公司 | A kind of Thermal Cutoffs with arc-extinguishing medium |
| WO2019192356A1 (en) * | 2018-04-03 | 2019-10-10 | 厦门赛尔特电子有限公司 | High-voltage fuse |
| EP3910660A4 (en) * | 2019-03-20 | 2022-03-23 | Xiamen Set Electronics Co., Ltd | Thermal cutoff |
| EP3910661A4 (en) * | 2019-03-20 | 2022-03-23 | Xiamen Set Electronics Co., Ltd | Thermal cutoff |
-
2009
- 2009-04-07 CN CN200910130438A patent/CN101859665A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011157230A1 (en) * | 2010-06-18 | 2011-12-22 | Xu Zhonghou | Large-current alloy type temperature fuse |
| WO2012089124A1 (en) * | 2010-12-31 | 2012-07-05 | 厦门赛尔特电子有限公司 | Apparatus comprising thermal fuse and resistor |
| US9240300B2 (en) | 2010-12-31 | 2016-01-19 | Xiamen Set Electronics Co., Ltd | Device comprising a thermal fuse and a resistor |
| CN102468090A (en) * | 2011-04-08 | 2012-05-23 | 厦门赛尔特电子有限公司 | Controlled fusing current protector |
| CN102468090B (en) * | 2011-04-08 | 2014-04-02 | 厦门赛尔特电子有限公司 | Controlled fusing current protector |
| CN102710967A (en) * | 2012-05-22 | 2012-10-03 | 袁华安 | Cloud television system and method |
| CN106450124A (en) * | 2015-08-05 | 2017-02-22 | 三星Sdi株式会社 | Flexible battery |
| WO2017211295A1 (en) * | 2016-06-07 | 2017-12-14 | 厦门赛尔特电子有限公司 | Stack-type temperature safety device |
| CN107087316A (en) * | 2017-04-28 | 2017-08-22 | 宁波柔碳电子科技有限公司 | A kind of method for excessive heating protection of graphene Electric radiant Heating Film and graphene Electric radiant Heating Film with overtemperature protection system |
| CN110299272A (en) * | 2018-03-21 | 2019-10-01 | 厦门赛尔特电子有限公司 | A kind of Thermal Cutoffs with arc-extinguishing medium |
| WO2019192356A1 (en) * | 2018-04-03 | 2019-10-10 | 厦门赛尔特电子有限公司 | High-voltage fuse |
| KR20200106971A (en) * | 2018-04-03 | 2020-09-15 | 샤먼 세트 일렉트로닉스 컴퍼니 리미티드 | High voltage fuse |
| JP2021508931A (en) * | 2018-04-03 | 2021-03-11 | 厦門賽爾特電子有限公司 | High voltage fuse |
| KR102500622B1 (en) * | 2018-04-03 | 2023-02-15 | 샤먼 세트 일렉트로닉스 컴퍼니 리미티드 | high voltage fuse |
| EP3910660A4 (en) * | 2019-03-20 | 2022-03-23 | Xiamen Set Electronics Co., Ltd | Thermal cutoff |
| EP3910661A4 (en) * | 2019-03-20 | 2022-03-23 | Xiamen Set Electronics Co., Ltd | Thermal cutoff |
| US11574785B2 (en) | 2019-03-20 | 2023-02-07 | Xiamen Set Electronics Co., Ltd. | Thermal cutoff |
| US11574787B2 (en) | 2019-03-20 | 2023-02-07 | Xiamen Set Electronics Co., Ltd | Thermal cutoff |
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Application publication date: 20101013 |