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WO2013000361A1 - Module de protection contre la surtension destiné à un circuit à courant continu - Google Patents

Module de protection contre la surtension destiné à un circuit à courant continu Download PDF

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Publication number
WO2013000361A1
WO2013000361A1 PCT/CN2012/076953 CN2012076953W WO2013000361A1 WO 2013000361 A1 WO2013000361 A1 WO 2013000361A1 CN 2012076953 W CN2012076953 W CN 2012076953W WO 2013000361 A1 WO2013000361 A1 WO 2013000361A1
Authority
WO
WIPO (PCT)
Prior art keywords
pin
varistor
gas discharge
discharge tube
electrode
Prior art date
Application number
PCT/CN2012/076953
Other languages
English (en)
Chinese (zh)
Inventor
陈石
孙玉培
许由生
徐忠厚
Original Assignee
厦门赛尔特电子有限公司
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 厦门赛尔特电子有限公司 filed Critical 厦门赛尔特电子有限公司
Publication of WO2013000361A1 publication Critical patent/WO2013000361A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/06—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using spark-gap arresters

Definitions

  • the invention relates to an overvoltage protection module for a DC circuit, which comprises an alloy type temperature fuse, a varistor and a gas discharge tube.
  • varistors are widely used as overvoltage protection and surge absorbing components for circuits, devices and components. Regardless of whether varistor is applied to power lines or electronic circuits, if various types of transient overvoltages occur frequently, the varistor will frequently operate to suppress overvoltage amplitude and absorb and release surge energy, protecting electrical equipment and Components. Thus, in the case of too frequent, this will inevitably lead to degradation or even failure of the varistor; thus, when the varistor receives a temporary overvoltage, the varistor will rapidly break down locally and cause a fire to burn. The varistor only has considerable limitations.
  • the present invention provides an overvoltage protection module for a DC circuit, and the technical solution thereof is as follows:
  • An overvoltage protection module for a DC circuit comprising a temperature fuse, a varistor and a gas discharge tube, wherein: the temperature fuse, the varistor and the gas discharge tube are sequentially connected in series in a module; a separate lead of the thermal fuse as a first pin; a junction of the thermal fuse and the varistor as a second pin; the varistor and the gas discharge tube are connected as a third pin; The independent lead of the gas discharge tube is used as the fourth pin; the first pin and the third pin are respectively connected to the negative pole and the positive pole of the DC power source, and the second pin and the fourth pin are respectively connected to the positive pole and the ground lead respectively ;
  • the varistor is in the form of a sheet, the conductive silver faces on both sides of the first and second electrodes are respectively soldered; the temperature fuse is in close contact with the surface of the first electrode, and the other lead of the thermal fuse crosses the And a varistor is connected to the second electrode and protrudes from the second pin; one end of the gas discharge tube is connected and fastened to the first electrode.
  • the temperature fuse is an alloy type thermal fuse.
  • the exterior of the module has a protective outer casing.
  • the first and third pins are respectively connected to a negative pole and a positive pole of a 48V DC power supply, and the third pin is connected to a ground of a 48V DC power supply, and the second and third leads are respectively The foot is connected to a disconnection state indicating circuit of a thermal fuse.
  • the DC overvoltage protection module comprises a temperature fuse, a gas discharge tube and two varistor, wherein the varistor are all connected in parallel and then connected in series between the temperature fuse and the gas discharge tube.
  • the independent lead of the thermal fuse serves as a first pin
  • the junction of the thermal fuse and the varistor serves as a second pin
  • the varistor is connected to the gas discharge tube As a third pin
  • the independent lead of the gas discharge tube serves as a fourth pin;
  • first pin and the third pin are respectively connected to the negative pole and the positive pole of the DC power source, and the third electrode and the fourth electrode are respectively connected to the positive pole and the ground line;
  • the varistor is a first and a second varistor;
  • the first varistor is in the form of a sheet, and the conductive silver faces on both sides are respectively soldered with the first and second electrodes;
  • the second varistor Also in the form of a sheet, the conductive silver faces on both sides of the second electrode and the third electrode are respectively soldered;
  • the first and third electrodes are connected structures;
  • the temperature fuse is in close contact with the first electrode surface of the first varistor; the other lead of the thermal fuse is connected to the second electrode across the first varistor, and extends the extension Two pins
  • the other end of the gas discharge tube is in close contact with and connected to the first electrode surface of the first varistor, and the third lead is externally led out on the third electrode.
  • the thermal fuse is an alloy type thermal fuse.
  • the exterior of the module has a protective outer casing.
  • the first and third pins are respectively connected to a negative pole and a positive pole of a 48V DC power supply, and the third pin is connected to a ground of a 48V DC power supply, and the second and third leads are respectively The foot is connected to a disconnection state indicating circuit of a thermal fuse.
  • the invention integrates a temperature fuse (TCO), a varistor (MOV) and a gas discharge tube (GDT) into one body, and adopts a PCB board welding method, which can effectively reduce the volume of the occupied module.
  • the integrated module is used in a DC power supply, especially a 48V communication DC power supply, to effectively and safely protect against surge and overvoltage.
  • Figure 1 is a partial cross-sectional structural view showing a first embodiment of the present invention
  • Figure 2 is a circuit diagram of a first embodiment of the present invention
  • Figure 3 is a diagram showing the internal structure of a specific embodiment 1 of the present invention.
  • Figure 4 is a disassembled view of the component 301 built in the specific embodiment 1 of the present invention.
  • Figure 5 is a diagram showing the composition of a component 401 built in a specific embodiment 1 of the present invention.
  • Figure 6 is a partial cross-sectional structural view showing a second embodiment of the present invention.
  • Figure 7 is a circuit diagram of a second embodiment of the present invention.
  • Figure 8 is a view showing the internal structure of a second embodiment of the present invention.
  • Figure 9 is a disassembled view of the component 801 built in the second embodiment of the present invention.
  • Figure 10 is a diagram showing the composition of a component 901 built in a second embodiment of the present invention.
  • Figure 11 is a perspective view, taken along the line, of a third embodiment of the present invention.
  • Figure 12 is a disassembled view of the component 301 built in the third embodiment of the present invention.
  • Figure 13 is a view showing the composition of a component 401 built in a specific embodiment 3 of the present invention.
  • FIG. 1 is intended to illustrate the preferred embodiments of the present invention and is not intended to limit the scope of the invention.
  • FIG. 1 is a schematic view of a final assembly of a specific embodiment 1 of the present invention
  • the compact modular overall has four output pins, which are first to fourth pins from left to right, and are -48V terminals 508,
  • the neutral line 506, the ground line 507, and the TCO disconnection indicate the circuit connection end 403.
  • one TCO (temperature fuse) and one MOV (varistor) form a TMOV structure in series, which is formed in the TMOV module 401 in Figure 4; another gas discharge tube GDT is connected in series after TMOV
  • the GDT module 402 in FIG. 4 is constructed.
  • the TMOV module 401 and the GDT module 402 are structurally compactly combined to form the core 301 in FIG. 3, and the core 301 is placed in the housing 302 for fixing.
  • the outer casing 302 is an injection molded engineering plastic or ceramic outer casing and then sealed with an epoxy resin, a silicone resin, an inorganic filler or the like.
  • an integral encapsulation process of epoxy or silicone it is also possible to electrically and mechanically fix the outer casing 302 of the 301 by an integral encapsulation process of epoxy or silicone.
  • the thermal fuse 401A is in close contact with the upper left corner of the TMOV module 401, and TMOV A gas discharge tube 402 is disposed on the right side of the module 401.
  • the bottom electrode 404 of the gas discharge tube 402 has two mounting holes 405.
  • the mounting holes 405 are sleeved and fixed on the first electrode 503 of the TMOV module 401.
  • the raised portions 406 form an effective electrical connection and mechanical positioning, and the top electrode 403 on the gas discharge tube 402 externally leads out the fourth pin 403.
  • Such an assembly minimizes the overall volume to meet the miniaturization of the overall product volume.
  • Figure 5 shows some details of the component TMOV module 401.
  • two layers of conductive silver layers 502A, 502B are applied to form the electrical characteristics of the MOV; the first electrode 503 is made of tin solder.
  • the second electrode 504 is soldered to the conductive silver layers 502A, 502B, respectively, and the second electrode 504 is soldered with a temperature fuse across the lead 505 and the second pin 506, which is bent across the lead 505 and spans both surfaces of the MOV.
  • the temperature-sensitive alloy wire 511 can adopt a plurality of parallel structures.
  • FIG. 6 is a schematic diagram of the assembly of the second embodiment of the present invention.
  • one TCO is connected in series with two MOVs connected in parallel to form a TMOV module 901 as shown in FIG. 9; and the other gas discharge tube GDT is connected in series with TMOV, and is shaped as a gas discharge tube in FIG. 902.
  • the TMOV module 901 and the gas discharge tube 902 are structurally compactly combined to form the core 801 of FIG. 8, which is placed and fixed in the housing 802.
  • the outer casing 802 is an injection-molded engineering plastic or ceramic outer casing, and then is sealed with an epoxy resin, a silicone resin, an inorganic filler or the like; or the core 801 is electrically insulated and mechanically sealed by an overall encapsulation process of epoxy resin or silicone resin.
  • the fixed outer casing encloses to form the outer casing 802.
  • the temperature fuse 901A is in close contact with the upper left corner of the TMOV module 901, and the TMOV module 901
  • the gas discharge tube 902 is disposed on the right side of the gas discharge tube 902.
  • the bottom electrode 904 of the gas discharge tube 902 has two mounting holes 905, and the mounting holes 905 are respectively sleeved on the two convex portions 906 on the first electrode electrode 1003A. With effective electrical connection and mechanical positioning, the top electrode 903 on the gas discharge tube 902 leads out the fourth pin. Such an assembly minimizes the overall volume to meet the miniaturization of the overall product volume.
  • Figure 10 shows the details of the component TMOV module 901.
  • first and second MOV ceramic dies 1001-1 and 1001-2 four-sided conductive silver layers 1002A, 1002B, 1002C, and 1002D are respectively coated to form electrical characteristics of the MOV;
  • An electrode 1003A, an intermediate electrode 1004, and a fourth electrode 1003B are respectively soldered to the conductive silver layers 1002A, 1002B, 1002C, and 1002D, and the intermediate electrode 1004 includes a whole of the second and third electrodes, and is soldered over the lead 1005.
  • the second pin 1006 which is bent across the lead 1005 and spans the two surfaces of the MOV, and is on the outside of the first electrode 1003A with the temperature-sensitive fuse of the temperature-sensitive alloy wire 1011, the first pin 1008, the flux breaker 1010, and the outer casing. 1012.
  • the sealing material 1009 is assembled into a complete thermal fuse 901A; the fuse housing 1012 of the thermal fuse 901A abuts the first electrode 1003A on the MOV.
  • FIG. 1 it is a schematic diagram of a general assembly of a third embodiment of the present invention; the compact modular whole has four output pins, which are respectively a first pin 508 connecting the -48V terminal and a second lead connecting the neutral wire.
  • one TCO (temperature fuse) and one MOV (varistor) constitute a TMOV structure connected in series, which is formed in the TMOV module 401 in FIG. 4; and another gas discharge tube GDT is connected in series to the TMOV module.
  • the GDT module 402 of FIG. 12 is constructed. While the TMOV module 401 and the GDT module 402 are structurally compactly coupled together, the core 301 in FIG. 12 is constructed, and the core 301 is placed in the housing 302 of FIG.
  • the outer casing 302 is an injection molded engineering plastic or ceramic outer casing and then sealed with an epoxy resin, a silicone resin, an inorganic filler or the like. It is also possible to electrically and mechanically fix the outer casing 302 of the 301 by an integral encapsulation process of epoxy or silicone.
  • the thermal fuse 401A is in close contact with the upper left corner of the TMOV module 401, while TMOV
  • the gas discharge tube 402 is disposed in the lower right corner of the module 401.
  • the bottom electrode 404 of the gas discharge tube 402 has two mounting holes 405.
  • the mounting holes 405 are sleeved and fixed on the first electrode 503 of the TMOV module 401.
  • the two raised portions 406 form an effective electrical connection and mechanical positioning, and the top electrode 403 on the gas discharge tube 402 is externally led out of the fourth fourth pin 403.
  • FIG. 13 shows some details of the component TMOV module 401.
  • two layers of conductive silver layers 502A, 502B are applied; the first electrode 503 and the second electrode 504 are soldered separately by tin solder.
  • the second electrode 504 is soldered with a temperature fuse across the lead 505 and the second pin 506, which is bent across the lead 505 and spans both surfaces of the MOV and is outside the first electrode 503.
  • the temperature-sensitive alloy wire 511, the first pin 508, the flux breaker 510, the fuse housing 512, and the sealing material 509 of the thermal fuse are assembled into a complete thermal fuse.
  • the fuse housing 512 of the thermal fuse 401A has a contact surface (not shown) that abuts the first electrode 503 on the MOV.
  • the thermal fuse (TCO), varistor (MOV) and gas discharge tube (GDT) are integrated into one body, and the PCB board welding method can effectively reduce the volume of the occupied module. It is used in DC power supply, especially 48V communication DC power supply, to effectively and safely protect against surge and overvoltage.

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  • Fuses (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

La présente invention a trait à un module de protection contre la surtension destiné à un circuit à courant continu, lequel module inclut un fusible à blocage thermique, une varistance à oxyde métallique et un tube à décharge gazeuse. Le fusible à blocage thermique, la varistance à oxyde métallique et le tube à décharge gazeuse sont montés en série de façon successive à l'intérieur d'un module; une extrémité du fusible à blocage thermique est utilisée en tant que première broche, le point de raccordement entre le fusible à blocage thermique et la varistance à oxyde métallique est utilisé en tant que deuxième broche; le point de raccordement entre la varistance à oxyde métallique et le tube à décharge gazeuse est utilisé en tant que troisième broche; et une extrémité du tube à décharge gazeuse est utilisée en tant que quatrième broche. La combinaison du fusible à blocage thermique (TCO), de la varistance à oxyde métallique (MOV) et du tube à décharge gazeuse (GDT) et l'utilisation du procédé de brasage de carte de circuit imprimé permettent de réduire de façon efficace le volume du module occupé. L'application dans un bloc d'alimentation en courant continu, et tout particulièrement un bloc d'alimentation en courant continu de communication de 48 V, protège de façon efficace et en toute sécurité contre les surtensions.
PCT/CN2012/076953 2011-06-30 2012-06-15 Module de protection contre la surtension destiné à un circuit à courant continu WO2013000361A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201120232550.8 2011-06-30
CN 201120232550 CN202121318U (zh) 2011-06-30 2011-06-30 一种直流电路的过压保护模组

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Publication Number Publication Date
WO2013000361A1 true WO2013000361A1 (fr) 2013-01-03

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WO (1) WO2013000361A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ309285B6 (cs) * 2014-06-27 2022-07-20 KIWA sk, s.r.o Zařízení pro přepěťovou ochranu

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202121318U (zh) * 2011-06-30 2012-01-18 厦门赛尔特电子有限公司 一种直流电路的过压保护模组
CN107611949A (zh) * 2017-09-30 2018-01-19 上海欣丰电子有限公司 一种防雷器件及其包含有该防雷器件的小体积浪涌保护器
CN107645158A (zh) * 2017-09-30 2018-01-30 上海欣丰电子有限公司 一种小体积浪涌保护器
CN208173323U (zh) * 2017-11-10 2018-11-30 厦门赛尔特电子有限公司 热保护型压敏电阻
US11223200B2 (en) * 2018-07-26 2022-01-11 Ripd Ip Development Ltd Surge protective devices, circuits, modules and systems including same
CN109687392A (zh) * 2019-02-15 2019-04-26 漳州雅宝电子有限公司 一种具有过流和过温保护的瞬态二极管模组
CN114927484A (zh) * 2022-05-16 2022-08-19 富芯微电子有限公司 一种双向三端固体放电管

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US6765777B2 (en) * 2000-08-29 2004-07-20 Citel Overvoltage-protection device
US6778375B1 (en) * 2000-12-22 2004-08-17 Panamax Hybrid MOV/gas-tube AC surge protector for building entrance
CN1925072A (zh) * 2005-09-03 2007-03-07 徐忠厚 设有合金型温度保险丝的压敏电阻
CN201820968U (zh) * 2010-07-01 2011-05-04 厦门赛尔特电子有限公司 一种具有过流过压过温保护功能的电源插座模块
CN202042877U (zh) * 2011-05-13 2011-11-16 稳得实业股份有限公司 防突波保护装置
CN202121318U (zh) * 2011-06-30 2012-01-18 厦门赛尔特电子有限公司 一种直流电路的过压保护模组
US8125308B1 (en) * 2009-04-02 2012-02-28 Bruce Barton Relocatable power tap with surge suppression or surge protection and a method for its manufacture

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6765777B2 (en) * 2000-08-29 2004-07-20 Citel Overvoltage-protection device
US6778375B1 (en) * 2000-12-22 2004-08-17 Panamax Hybrid MOV/gas-tube AC surge protector for building entrance
CN1925072A (zh) * 2005-09-03 2007-03-07 徐忠厚 设有合金型温度保险丝的压敏电阻
US8125308B1 (en) * 2009-04-02 2012-02-28 Bruce Barton Relocatable power tap with surge suppression or surge protection and a method for its manufacture
CN201820968U (zh) * 2010-07-01 2011-05-04 厦门赛尔特电子有限公司 一种具有过流过压过温保护功能的电源插座模块
CN202042877U (zh) * 2011-05-13 2011-11-16 稳得实业股份有限公司 防突波保护装置
CN202121318U (zh) * 2011-06-30 2012-01-18 厦门赛尔特电子有限公司 一种直流电路的过压保护模组

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ309285B6 (cs) * 2014-06-27 2022-07-20 KIWA sk, s.r.o Zařízení pro přepěťovou ochranu

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