WO2011157230A1 - Fusible thermique du type en alliage pour courants forts - Google Patents

Fusible thermique du type en alliage pour courants forts Download PDF

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Publication number
WO2011157230A1
WO2011157230A1 PCT/CN2011/075924 CN2011075924W WO2011157230A1 WO 2011157230 A1 WO2011157230 A1 WO 2011157230A1 CN 2011075924 W CN2011075924 W CN 2011075924W WO 2011157230 A1 WO2011157230 A1 WO 2011157230A1
Authority
WO
WIPO (PCT)
Prior art keywords
alloy
type thermal
thermal fuse
melting point
metal electrodes
Prior art date
Application number
PCT/CN2011/075924
Other languages
English (en)
Chinese (zh)
Inventor
徐忠厚
许由生
江鸿盛
Original Assignee
Xu Zhonghou
Xu Yousheng
Jiang Hongsheng
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xu Zhonghou, Xu Yousheng, Jiang Hongsheng filed Critical Xu Zhonghou
Publication of WO2011157230A1 publication Critical patent/WO2011157230A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • 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
    • H01H85/12—Two or more separate fusible members in parallel

Definitions

  • the present invention relates to a high-current alloy-type temperature fuse, particularly for protection against overheating of a device having a large current characteristic such as a power storage battery.
  • 5,070,427 discloses a thermal switch for battery protection (Thermal Switch for Battery Protection); US 5357184 discloses a Fuse System for a Multiple Battery Charger; US 5879832 discloses a current interrupter for electrochemical cells (Current Interrupter for Electrochemical An overshoot protection device and method for lithium-based rechargeable batteries is disclosed in US Pat. No. 6,608,470 (Overcharge Protection Device) And Methods for Lithium Rechargeable Batteries); and the US patent number is US 5097247 discloses a heat actuated fuse device with solder joints (Heat Actuated Fuse Apparatus with solder Link), these battery protection measures can protect the battery's charge and discharge safety, but the protection measures are more complicated.
  • alloy-type thermal fuses are sensitive to temperature changes. Their actions are mainly responsive to the temperature of the protected device, but they are not sensitive to current. When the current flowing through the rated operating current greatly exceeds the rated operating current, the alloy-type thermal fuse will also blow. However, the response speed is far less than the effect of the current limiting fuse. If there is an alloy type thermal fuse that can withstand the discharge current of the battery and can sense the temperature rise of the battery, the thermal protection measures of the battery can be simplified. However, current current temperature fuses have a relatively low current carrying capacity and cannot carry large discharge currents of the power battery.
  • the purpose of the invention is to overcome the shortcomings of the existing thermal fuses that cannot protect the large-capacity power storage battery, and provide an alloy-type thermal fuse with a large current as a thermal protection of the power storage battery to protect the battery from charge and discharge. Technical measures are simplified. It also provides easy overheat protection for devices with high current characteristics.
  • the present invention provides an alloy type temperature insurance having a large current, and more particularly to a thermal fuse for thermal protection of a device having a large current characteristic such as a large-capacity power storage battery. Since the alloy type thermal fuse is operated in series with the battery, the alloy type thermal fuse must carry the high discharge current of the power battery.
  • a plurality of (including two) low melting point alloy wires are connected in parallel, and a flux material is disposed around each of the low melting point alloy wires, so that each low melting point alloy wire can promote each after being heated and melted. The root low melting point alloy wire is quickly and completely retracted back to the electrode. Using this method, a high-current alloy type thermal fuse can be manufactured.
  • the ampere-capacity alloy type thermal fuse has the following structure: there are two columnar metal electrodes with good solderability, and in order to separate the metal electrode columns by a predetermined distance, one electrode is fixed by an insulating material; A plurality of low melting point alloy wires are welded in parallel between the two column electrodes, and a fluxing material is disposed around each of the low melting point alloy wires, thereby forming a plurality of alloy type temperature fuse units, and a An outer casing made of engineering plastics, ceramic materials, metal materials or a combination of the above materials. Two metal electrode extensions extend out of the outer casing through the epoxy of the sealed outer casing.
  • the composition of the alloy type thermal fuse of such an amperage capacity may also be such that two sheet metal electrodes having good solderability have through holes for soldering low melting point alloy wires on the two sheet metal electrodes. Moreover, the positions of the through holes on the two chip electrodes are completely consistent; in order to separate the metal electrodes by a predetermined distance, one of the two thermally conductive metal electrodes is supported by an insulating material or more than one insulating post; The melting point alloy wire is provided with a material containing a fluxing agent around each low melting point alloy wire, thus forming a plurality of alloy type temperature fuse units, and the distribution thereof can be arranged in parallel between the two electrodes.
  • the two metal electrodes protrude out of the outer casing through the epoxy of the sealed outer casing.
  • the outer casing and the electrodes extending out of the outer casing allow the high current alloy type thermal fuse to be thermally coupled between the protective devices.
  • the invention adopts a method in which a plurality of alloy wires are connected in parallel, which can realize both a large current and a rapid response to overheating and disconnection; it is now possible to manufacture an operating current exceeding
  • a 40 amp alloy-type thermal fuse can also be used to produce an alloy-type thermal fuse with a pulse current of 8/20 microseconds greater than 20kA, and even a pulse current with an 8/20 microsecond waveform that is greater than 100KA.
  • the temperature fuse can be used to cut off the fault current of the power supply unit and the surge protection device (SPD).
  • Embodiment 1 is a front cross-sectional view of Embodiment 1 of a method in accordance with the present invention.
  • Figure 2 is a side cross-sectional view of Embodiment 1 of the method in accordance with the present invention.
  • Figure 3 is a perspective exploded view of Example 1 of the method in accordance with the present invention.
  • Figure 4 is a front cross-sectional view of Embodiment 2 of the method in accordance with the present invention.
  • Figure 5 is a side cross-sectional view of Embodiment 2 of the method in accordance with the present invention.
  • Figure 6 is a perspective exploded view of Example 2 of the method in accordance with the present invention.
  • FIG. 2 and FIG. 3 are respectively a front cross-sectional view, a side cross-sectional view and a perspective anatomical view of a high current alloy type thermal fuse according to a preferred embodiment of the present invention.
  • the high current alloy type thermal fuse includes a housing 15 in which is assembled an assembly of the following components: two conductive and thermally conductive metal electrodes 11a and 11b,
  • the conductive thermally conductive metal electrode is cylindrical, and the two conductive and thermally conductive metal electrodes 11a and 11b are supported by the insulating plate 18 to ensure that the two metal electrodes 11a and 11b are substantially parallel, two metals.
  • the electrodes have extension portions 11aa and 11bb as outer lead wires respectively; two low-melting-point alloy wires 13 are welded between the two metal electrodes 11a and 11b, thereby forming an alloy type temperature fuse body;
  • the distribution mode; the low melting point alloy wire will melt at a predetermined melting temperature; the fluxing material 14 is disposed around the low melting point alloy wire, and when the external heat is transferred to the low melting point alloy wire, the temperature reaches or exceeds the predetermined condition of the alloy wire. At the melting temperature, all the alloy wires will melt and break; the fluxing material 14 not only promotes the melting of the alloy wire, but also promotes the alloy wire to two. Metal electrode retracted.
  • the alloy type thermal fuse body is assembled into the outer casing 15 and sealed with an epoxy resin 12, and the two metal electrodes respectively have extension portions 11aa and 11bb exposed through the epoxy resin, which is a lead wire for connecting an external circuit. It is also a connector that completes a tight thermal coupling with the protected device.
  • the number of low melting point alloy wires depends on the expected current in the circuit.
  • the high current alloy type thermal fuse includes a housing 15 in the housing 15 It is equipped with an assembly consisting of two conductive and thermally conductive metal electrodes 11a and 11b.
  • the electrically and thermally conductive metal electrodes are plate-shaped, and have a plurality of arrays arranged in an array on the two metal electrodes.
  • the invention is not limited to 8 pieces, the number of low melting point alloy wires can be adjusted as needed to obtain alloy type temperature fuses with different amperage capacities; in the circumference of each low melting point alloy wire
  • the fuse 14 is provided, and the extension portions 11aa and 11bb of the metal electrodes forming the external lead wires are separated by an insulating plate 18, on the extension portions 11aa and 11bb and the insulating plate 18 of the thermally conductive conductive metal electrodes forming the external lead wires, A hole 17 for assembling a large current alloy type thermal fuse to an external circuit is provided.
  • the alloy type thermal fuse body is assembled into the outer casing 15 and sealed with epoxy resin 12 to form a complete high-current alloy type thermal fuse.
  • the invention adopts a method in which a plurality of alloy wires are connected in parallel, which can realize both a large current and a rapid response to overheating and disconnection; it is now possible to manufacture an operating current exceeding
  • a 40 amp alloy-type thermal fuse can also be used to produce an alloy-type thermal fuse with a pulse current of 8/20 microseconds greater than 20kA, and even a pulse current with an 8/20 microsecond waveform that is greater than 100KA.
  • the temperature fuse can be used to cut off the fault current of the power supply unit and the surge protection device (SPD).

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Fuses (AREA)

Abstract

L'invention concerne un fusible thermique du type en alliage pour courants forts, destiné à protéger contre la surchauffe un dispositif offrant des caractéristiques de courants forts. Dans ce fusible du type en alliage pour courants forts, une pluralité de fils (13) faits dans un alliage à faible point de fusion sont soudés et connectés en parallèle entre deux électrodes métalliques (11a, 11b) offrant une bonne aptitude au soudage. Les électrodes métalliques sont séparées par une pièce (18) faite d'un matériau isolant et elles comprennent des parties d'extension (11aa, 11bb) qui font saillie par rapport à une coque (15), ce qui autorise un couplage thermique étroit entre le fusible thermique du type en alliage pour courants forts et le dispositif protégé thermiquement. Par ailleurs, un matériau de flux à souder (14) est placé autour de chaque fil en alliage à faible point de fusion, si bien que chaque fil en alliage à faible point de fusion peut être rapidement et complètement détaché des électrodes après chauffage et fusion et qu'il est ainsi possible de couper sûrement un courant élevé.
PCT/CN2011/075924 2010-06-18 2011-06-20 Fusible thermique du type en alliage pour courants forts WO2011157230A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201020229382.2 2010-06-18
CN2010202293822U CN202094065U (zh) 2010-06-18 2010-06-18 大电流熔断器

Publications (1)

Publication Number Publication Date
WO2011157230A1 true WO2011157230A1 (fr) 2011-12-22

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PCT/CN2011/075924 WO2011157230A1 (fr) 2010-06-18 2011-06-20 Fusible thermique du type en alliage pour courants forts

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CN (1) CN202094065U (fr)
WO (1) WO2011157230A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9768433B2 (en) 2014-10-21 2017-09-19 Ford Global Technologies, Llc Multi-layered terminal having thermal fuse for a traction battery cell
KR20210104120A (ko) * 2019-03-20 2021-08-24 샤먼 세트 일렉트로닉스 컴퍼니 리미티드 열 차단 장치

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102290301B (zh) * 2010-06-18 2014-04-02 厦门赛尔特电子有限公司 一种大电流熔断器
TWI562493B (en) * 2015-07-20 2016-12-11 Amita Technologies Inc Ltd Battery Protection System and Initiative Fuse Protective Devices thereof
CN106653513B (zh) * 2016-12-30 2023-08-25 上海维安电子股份有限公司 满足高压低压双功能保护的自控制保护器及其制造方法
CN108766853A (zh) * 2018-06-08 2018-11-06 佛山市仁星电气有限公司 封装式主温控器及温控装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1387214A (zh) * 2001-05-18 2002-12-25 库帕技术公司 延时熔断器
CN101261914A (zh) * 2007-03-08 2008-09-10 诚佑科技股份有限公司 芯片型保险丝及其制造方法
CN101465250A (zh) * 2008-12-31 2009-06-24 上海长园维安电子线路保护股份有限公司 温度保险丝及其制造方法
CN101859665A (zh) * 2009-04-07 2010-10-13 厦门赛尔特电子有限公司 一种高安培容量的合金型温度保险丝

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1387214A (zh) * 2001-05-18 2002-12-25 库帕技术公司 延时熔断器
CN101261914A (zh) * 2007-03-08 2008-09-10 诚佑科技股份有限公司 芯片型保险丝及其制造方法
CN101465250A (zh) * 2008-12-31 2009-06-24 上海长园维安电子线路保护股份有限公司 温度保险丝及其制造方法
CN101859665A (zh) * 2009-04-07 2010-10-13 厦门赛尔特电子有限公司 一种高安培容量的合金型温度保险丝

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9768433B2 (en) 2014-10-21 2017-09-19 Ford Global Technologies, Llc Multi-layered terminal having thermal fuse for a traction battery cell
KR20210104120A (ko) * 2019-03-20 2021-08-24 샤먼 세트 일렉트로닉스 컴퍼니 리미티드 열 차단 장치
US11574785B2 (en) * 2019-03-20 2023-02-07 Xiamen Set Electronics Co., Ltd. Thermal cutoff
KR102574581B1 (ko) * 2019-03-20 2023-09-04 샤먼 세트 일렉트로닉스 컴퍼니 리미티드 열 차단 장치

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