TWI315073B - - Google Patents

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Publication number
TWI315073B
TWI315073B TW095144406A TW95144406A TWI315073B TW I315073 B TWI315073 B TW I315073B TW 095144406 A TW095144406 A TW 095144406A TW 95144406 A TW95144406 A TW 95144406A TW I315073 B TWI315073 B TW I315073B
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TW
Taiwan
Prior art keywords
varistor
insulating bracket
protection function
thermal protection
thermal
Prior art date
Application number
TW095144406A
Other languages
English (en)
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TW200823934A (en
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 filed Critical
Priority to TW095144406A priority Critical patent/TW200823934A/zh
Priority to US11/705,680 priority patent/US7453681B2/en
Publication of TW200823934A publication Critical patent/TW200823934A/zh
Application granted granted Critical
Publication of TWI315073B publication Critical patent/TWI315073B/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/105—Varistor cores
    • H01C7/108—Metal oxide
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/08—Cooling, heating or ventilating arrangements
    • 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
    • H01H2085/0008—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 making use of heat shrinkable material
    • 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

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuses (AREA)
  • Thermistors And Varistors (AREA)

Description

.1315073 九、發明說明： 【發明所屬之技術領域】 本發明為一種具有熱保護功能的壓敏電阻，尤指一種 帶有自我失效保護功能；當遇到各種類型過電壓導致本體 溫度異常昇高而失效時，具有自我保護功能的壓敏電阻。 【先前技術】 壓敏電阻器以其優越的非線性伏安特性，廣泛使用於 線路、設備及元件的過電壓保護與浪湧吸收元件，不論壓 • 敏電阻器應用在電力線或電子線路，若各種類型的瞬時過 電壓頻繁出現，則壓敏電阻器就會頻繁動作來抑制過電壓 增幅和吸收釋放浪湧能量，以保護電器設備及元件，長此 以往則勢必會導致壓敏電阻器的性能劣化乃至失效。 再者，當壓敏電阻接受持續性過電壓時，壓敏電阻會 迅速局部擊穿導致起火燃燒現象，現有技術的壓敏電阻元 件中’其可具有熱保護功能’現有技術之具有熱保護功能 之屢敏電阻，一般係設有一貼附靠近壓敏電阻元件的熱熔 φ 絲於電流迴路中，利用熱熔絲之熔點低於其餘構件的原 理’當過大電流通過而產生高溫時’高溫將熱熔絲燒毀而 形成斷路，因而達到熱保護功能，然而，由於現有技術之 具有熱保護功能的壓敏電阻中作為過熱保護結構的熱熔絲 的響應速度過慢仍無法及時感測過高溫度而及時斷路，或 者是耐受大電流衝擊能力較弱容易失效，因此現有技術的 帶失效保護之壓敏電阻所具有之熱保護功能仍具有其缺

Claims (1)

1315073 十、申請專利範圍： %曰修雖替換頁. • 1----------j 1 種具有熱保護功能的壓敏電阻’其中包括： 一本體； 一絕緣支架，其設於本體一侧上，絕緣支架與本體相 接侧内凹成型有複數個鑛齒狀凹槽，絕緣支架與本體相異 侧内凹成型有一容置長槽； 一第一接腳’其與本體上相異於絕緣支架一側形成電 連接； 一第二接腳’其設於絕緣支架之長槽中； 至少一熱溶絲’其設於絕緣支架之長槽中，熱熔絲兩 端分別透過一銲錫點與第二接腳及本體形成電連接。 2·如申請專利範圍第1項所述之具有熱保護功能的 壓敏電阻，其中一熱可收縮性材料包裹於熱熔絲外且設於 絕緣支架之容置長槽中。 3 ·如申請專利範圍第1項所述之具有熱保護功能的 壓敏電阻，其中包含有一熱傳導性電絕緣膠體材料，其覆 蓋於熱熔絲及銲錫點上並與本體相接觸。 4·如申請專利範圍第2項所述之具有熱保護功能的 壓敏電阻，其中包含有一熱傳導性電絕緣膠體材料，其覆 蓋於熱炼絲、熱可收縮性材料及銲錫點上並與本體相接 觸。 ' 5 · —種具有熱保護功能的壓敏電阻，其中包括： 一本體； 絕緣支架’其設於本體一側上’絕緣支架與本體相 1315073 異側内凹成型有複數個相互平行的容置長槽，一狹槽内凹 成型於絕緣支架相異於本體之一側且貫穿各長槽； 一第一接腳，其與本體上相異於絕緣支架一侧形成電 連接； 一第二接腳，其設於絕緣支架之其中一長槽中； 至少一熱熔絲，其設於絕緣支架之狹槽中，熱熔絲兩 端分別透過一銲錫點與第二接腳及本體形成電連接。 6 .如申請專利範圍第5項所述之具有熱保護功能的 壓敏電阻’其中一熱可收縮性材料包袠於熱熔絲外。 7.如申請專利範圍第5項所述之具有熱保護功能的 壓敏電阻，其中絕緣支架相對於本體一侧内凹成型有一容 置缺槽，一中介接腳設於該缺槽中且分別與本體及熱熔絲 形成電連接。 8 ·如申凊專利範圍第7項所述之具有熱保護功能的 壓敏電阻，其令一熱可收縮性材料包裹於熱熔絲外，熱熔 絲兩端透過銲錫點分別與第二接腳及中介接腳形成電連 接。 9如申凊專利範圍第5或γ項所述之具有熱保護功 此的壓敏電阻，其中包含有—熱傳導性電絕緣膠體材料， 其覆蓋於熱熔絲及銲錫點上並與本體相接觸。 10如申凊專利範圍第6或8項所述之具有熱保護 力月b的壓敏電阻，其中包含有—熱傳導性電絕緣膠體材 料其覆蓋於熱溶絲、熱可收縮性材料及録錫點上並與本 體相接觸。 12 1315073 货年必月义日修(#正替換頁| 十·一、圖式. 如次冥 13 1315073 ύ[ y / y5 tf 〇 I •·
70 第一匱 1315073
第二匱
1315073 托年外月(r日修(〆)正替換頁
第四圖 1315073
第六圖
1315073
第八B
1315073 « ·
第九圖 f碑月日修
1315073 弘年i月(r日修正替換頁
第十一圖
TW095144406A 2006-11-30 2006-11-30 Varistor with over heating protection TW200823934A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TW095144406A TW200823934A (en) 2006-11-30 2006-11-30 Varistor with over heating protection
US11/705,680 US7453681B2 (en) 2006-11-30 2007-02-13 Metal oxide varistor with a heat protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW095144406A TW200823934A (en) 2006-11-30 2006-11-30 Varistor with over heating protection

Publications (2)

Publication Number Publication Date
TW200823934A TW200823934A (en) 2008-06-01
TWI315073B true TWI315073B (zh) 2009-09-21

Family

ID=39475029

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095144406A TW200823934A (en) 2006-11-30 2006-11-30 Varistor with over heating protection

Country Status (2)

Country Link
US (1) US7453681B2 (zh)
TW (1) TW200823934A (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102611074A (zh) * 2011-01-25 2012-07-25 胜德国际研发股份有限公司 热保护模块
TWI408717B (zh) * 2010-09-17 2013-09-11 Powertech Ind Co Ltd 開關模組
TWI415155B (zh) * 2010-09-13 2013-11-11 Powertech Ind Co Ltd 保護電路

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Publication number Priority date Publication date Assignee Title
US10445799B2 (en) 2004-09-30 2019-10-15 Uber Technologies, Inc. Supply-chain side assistance
US8780521B2 (en) * 2004-12-13 2014-07-15 Zhonghou Xu Metal oxide varistor with built-in alloy-type thermal fuse
AU2006277738A1 (en) * 2005-08-05 2007-02-15 Kiwa Spol. S R.O. Overvoltage protection with status signalling
US8358976B2 (en) 2006-03-24 2013-01-22 The Invention Science Fund I, Llc Wireless device with an aggregate user interface for controlling other devices
KR100899282B1 (ko) * 2006-07-18 2009-05-27 주식회사 엘지화학 열수축 튜브를 이용한 안전 스위치 및 이를 포함하고 있는이차전지
US7741946B2 (en) * 2007-07-25 2010-06-22 Thinking Electronics Industrial Co., Ltd. Metal oxide varistor with heat protection
DE102009004317A1 (de) * 2008-08-22 2010-02-25 Dehn + Söhne Gmbh + Co. Kg Schnelle Abtrennvorrichtung
JP5248374B2 (ja) * 2009-03-13 2013-07-31 新光電気工業株式会社 ３極避雷管
US8310800B1 (en) * 2009-03-24 2012-11-13 Technology Research Corporation Fault detector for surge suppressor
US8836464B2 (en) * 2009-06-24 2014-09-16 Ceramate Technical Co., Ltd. Explosion-proof and flameproof ejection type safety surge-absorbing module
US20100328016A1 (en) * 2009-06-24 2010-12-30 Robert Wang Safe surge absorber module
CN101887790B (zh) * 2010-06-13 2012-07-04 深圳科安达电子科技股份有限公司 防雷用压敏电阻
DE102010038401B4 (de) * 2010-07-26 2013-11-14 Vishay Bccomponents Beyschlag Gmbh Thermosicherung sowie Verwendung einer solchen
US8749340B2 (en) * 2010-09-17 2014-06-10 Powertech Industrial Co., Ltd. Electric receptacle apparatus with replaceable protection module
CN102447244B (zh) * 2010-10-14 2014-11-26 胜德国际研发股份有限公司 开关模块
US9165702B2 (en) * 2011-03-07 2015-10-20 James P. Hagerty Thermally-protected varistor
WO2014147971A1 (ja) * 2013-03-19 2014-09-25 パナソニック株式会社 劣化警報付きバリスタ
US9552559B2 (en) 2014-05-06 2017-01-24 Elwha Llc System and methods for verifying that one or more directives that direct transport of a second end user does not conflict with one or more obligations to transport a first end user
TWI547959B (zh) 2014-11-05 2016-09-01 勝德國際研發股份有限公司 壓敏電阻器
US10446345B2 (en) * 2018-01-09 2019-10-15 Littelfuse, Inc. Reflowable thermal fuse
WO2021050458A1 (en) * 2019-09-09 2021-03-18 Dongguan Littelfuse Electronics, Co., Ltd Overheat protection device and varistor
CN111237728A (zh) * 2020-02-14 2020-06-05 厦门普为光电科技有限公司 一种用于灯管的保护系统
EP3989256A1 (en) * 2020-10-21 2022-04-27 SolarEdge Technologies Ltd. Thermal fuse
US12087479B2 (en) * 2021-12-07 2024-09-10 Littelfuse, Inc. Metal oxide varistor with reinforced electrodes

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EP1150307B1 (en) * 2000-04-26 2008-10-22 Littelfuse Ireland Development Company Limited A thermally protected metal oxide varistor
US20070200657A1 (en) * 2006-02-28 2007-08-30 Shang-Chih Tsai Thermal fuse varistor assembly with an insulating glass passivation layer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI415155B (zh) * 2010-09-13 2013-11-11 Powertech Ind Co Ltd 保護電路
TWI408717B (zh) * 2010-09-17 2013-09-11 Powertech Ind Co Ltd 開關模組
CN102611074A (zh) * 2011-01-25 2012-07-25 胜德国际研发股份有限公司 热保护模块

Also Published As

Publication number Publication date
US7453681B2 (en) 2008-11-18
TW200823934A (en) 2008-06-01
US20080129440A1 (en) 2008-06-05

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