WO2021057163A1 - 一种具有高分断能力的电涌保护装置 - Google Patents

一种具有高分断能力的电涌保护装置 Download PDF

Info

Publication number
WO2021057163A1
WO2021057163A1 PCT/CN2020/100457 CN2020100457W WO2021057163A1 WO 2021057163 A1 WO2021057163 A1 WO 2021057163A1 CN 2020100457 W CN2020100457 W CN 2020100457W WO 2021057163 A1 WO2021057163 A1 WO 2021057163A1
Authority
WO
WIPO (PCT)
Prior art keywords
fixed
electrode
protection device
surge protection
electrodes
Prior art date
Application number
PCT/CN2020/100457
Other languages
English (en)
French (fr)
Inventor
张祥贵
高天安
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
Priority to EP20869674.0A priority Critical patent/EP3972068B1/en
Priority to US17/623,856 priority patent/US11742656B2/en
Publication of WO2021057163A1 publication Critical patent/WO2021057163A1/zh

Links

Images

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H02H5/047Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a temperature responsive switch
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01CRESISTORS
    • H01C7/00Non-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
    • H01C7/10Non-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
    • H01C7/12Overvoltage protection resistors
    • H01C7/126Means for protecting against excessive pressure or for disconnecting in case of failure
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00Thermally-actuated switches
    • H01H37/74Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/764Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material in which contacts are held closed by a thermal pellet
    • H01H37/765Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material in which contacts are held closed by a thermal pellet using a sliding contact between a metallic cylindrical housing and a central electrode
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T1/00Details of spark gaps
    • H01T1/14Means structurally associated with spark gap for protecting it against overload or for disconnecting it in case of failure
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/008Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for protective arrangements according to this subclass
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/043Protection of over-voltage protection device by short-circuiting
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00Thermally-actuated switches
    • H01H37/74Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material

Definitions

  • the invention relates to the technical field of overvoltage protection, in particular to a surge protection device with high breaking capacity.
  • a surge protection device is an overvoltage protection device connected to electronic equipment or low-voltage power distribution systems. It is mainly used to discharge lightning current, lightning induction and surge current caused by switching operations, and limit the amplitude of overvoltage , So as to avoid the damage of surge current to other equipment in the loop.
  • the voltage-limiting surge protector has the following two outstanding problems:
  • the thermal protection device of the voltage-limiting surge protector uses a low melting point alloy as the thermal trigger medium, and is connected in series with the voltage-limiting device to form an electrical connection path.
  • the thermal triggering medium usually selects a melting point temperature between 100-160°C, and the thermal protection device is likely to trip by mistake or trip in advance when the surge current flows. The reason is that the heating of the voltage-limiting device during the surge current flow, the low melting point of the thermally triggered medium, the thermal effect and the electrodynamic effect of the surge current flowing through the thermally triggered medium, and the brittleness of the material of the thermally triggered medium affect each other.
  • the present invention proposes a surge protector with high breaking capacity.
  • the invention aims to provide a surge protection device with high breaking capacity to solve the problem that the thermal protection device of the existing surge protection device does not have the overcurrent protection function and the thermal protection device is prone to false tripping when the surge current flows. Or the problem of early tripping.
  • a surge protection device with high breaking capacity includes a housing with at least two lead electrodes, a voltage-limiting device and a thermal trip mechanism installed in the housing, wherein:
  • the voltage-limiting device includes a voltage-limiting device positioned and installed in an insulating cover, a first electrode, and a second electrode;
  • the thermal tripping mechanism includes a fixed component, a moving component, and a thermal triggering device.
  • the fixed component and the moving component form a plurality of displacement switches arranged in series.
  • the thermal triggering device is arranged in linkage with the moving component and includes a trigger metal sheet, Fusible alloy and energy storage parts. One end of the trigger metal sheet is fixed on the moving component, and the other end is fixed on the second electrode by welding of the fusible alloy to limit the displacement of the moving component relative to the moving component. Causing the energy storage member to accumulate potential energy that causes the movable component to be displaced relative to the fixed component;
  • the first electrode is electrically connected to one of the lead electrodes, and two ends of the plurality of displacement switches connected in series are electrically connected to the second electrode and the other lead electrode.
  • the fixed assembly includes a fixed support and n fixed electrodes sequentially fixed on the fixed support, wherein n ⁇ 2, and the fixed electrodes are disconnected from each other;
  • the dynamic assembly includes a movable support and a fixed electrode in sequence. There are n+1 movable electrodes fixed on the movable support, and a fracture is formed between two adjacent movable electrodes, and the movable support has a first state without displacement relative to the fixed support, and a first state after displacement.
  • each certain electrode In the first state, each certain electrode is in contact with the two adjacent moving electrodes corresponding to it, so that all fixed electrodes are connected; in the second state, the two adjacent moving electrodes are formed The fracture is located exactly at the break between two adjacent fixed electrodes corresponding to it, so that the fixed electrodes are disconnected from each other and are in a non-conducting state.
  • the movable support and the fixed support are provided with a limit structure that cooperates with each other, and the limit structure can limit the displacement distance or angle of the movable support relative to the fixed support.
  • the limiting structure is a protrusion and a relief groove respectively provided on the movable support and the fixed support.
  • the distance between the fractures is not less than 0.1 mm.
  • the fixed bracket has a substantially cylindrical cavity with a rotating shaft at the center of the cavity, and the movable bracket is pivotally connected to the fixed bracket through the rotating shaft, and has an arrangement corresponding to the inner wall of the cavity
  • the fixed electrode is fixed on the inner wall of the cavity, and the movable electrode is fixed on the outer peripheral wall of the movable support.
  • first electrode and the second electrode of the voltage-limiting device respectively have a first electrode lead-out portion and a second electrode lead-out portion that extend outside the insulating cover, and the first fixed electrode and the second electrode on the fixed component
  • Each of the n fixed electrodes has a certain electrode lead-out part, wherein the first electrode lead-out part and one lead-out electrode, the second electrode lead-out part and the certain electrode lead-out part, and the other fixed electrode lead-out part and the other lead-out electrode are respectively arranged next to each other.
  • a current fuse is connected in parallel to each of the n series of fractures, where k ⁇ n.
  • the moving electrodes on both sides of the even-numbered fractures are arranged in parallel with a current fuse.
  • the movable bracket is provided with a plurality of fixing slots for placing the current fuse, and each fixing slot is connected with two oppositely arranged card slots, and the two pins of the current fuse fixed in the fixing slot can be
  • the two card slots are in contact and conduction with the fixed electrodes on both sides of the corresponding fracture.
  • a remote signal switch or window set in linkage with the moving component also includes a remote signal switch or window set in linkage with the moving component.
  • the surge protection device with high breaking capacity provided by the present invention has the following advantages: the fusible alloy used as the solder joint of the thermal trigger medium in the thermal trip mechanism in the surge protection device provided by the present invention is not It is connected to the circuit, so there is no surge current that causes the thermal protection device to trip or trip in advance, and in the process of disconnecting the arc under the system voltage, multiple ( ⁇ 2) series-connected fractures are relatively single
  • the fracture has a higher arc voltage drop, which can limit the size of the arc current, and a sufficient fracture gap can limit the current within a safe range, which not only avoids the thermal trigger medium of the traditional surge protector thermal separation device due to the need
  • the risk of misoperation caused by thermal and electrodynamic effects through the lightning current also avoids the risk of fire caused by the large current caused by the short-circuit failure of the voltage-limiting device.
  • Fig. 1 schematically shows a schematic circuit diagram of the surge protection device in Embodiment 1 before the thermal trip action.
  • Fig. 2 schematically shows the circuit principle diagram of the surge protection device in the second embodiment after the thermal tripping action.
  • FIG. 3 schematically shows a front view of the surge protection device in Embodiment 1.
  • Fig. 4 schematically shows an exploded view of the surge protection device in Embodiment 1.
  • FIG. 5 schematically shows an exploded view of the voltage-limiting device in Embodiment 1.
  • FIG. 6 schematically shows an assembly diagram of the pressure-limiting device in Embodiment 1.
  • FIG. 7 schematically shows a schematic diagram of the thermal trip mechanism in Embodiment 1 before the thermal trip action.
  • FIG. 8 schematically shows a schematic diagram of the thermal tripping mechanism in Embodiment 1 after the thermal tripping action.
  • FIG. 9 schematically shows a schematic diagram of the fixed bracket in Embodiment 1.
  • FIG. 9 schematically shows a schematic diagram of the fixed bracket in Embodiment 1.
  • FIG. 10 schematically shows a schematic diagram of the movable support in Embodiment 1.
  • FIG. 10 schematically shows a schematic diagram of the movable support in Embodiment 1.
  • FIG. 11 schematically shows the assembly diagram between the electrode pins in the surge protection device in Embodiment 1.
  • FIG. 11 schematically shows the assembly diagram between the electrode pins in the surge protection device in Embodiment 1.
  • FIG. 12 schematically shows the assembly relationship between the electrode pins in the surge protection device in Embodiment 1.
  • FIG. 12 schematically shows the assembly relationship between the electrode pins in the surge protection device in Embodiment 1.
  • FIG. 13 schematically shows a schematic circuit diagram of the surge protection device in Embodiment 2 before the thermal trip action.
  • FIG. 14 schematically shows a schematic circuit diagram of the thermal tripping action of the surge protection device in the second embodiment.
  • FIG. 15 schematically shows the circuit principle diagram of the surge protection device in the second embodiment after the thermal trip action.
  • FIG. 16 schematically shows an assembly relationship diagram between the electrode pins in the surge protection device in Embodiment 2.
  • FIG. 16 schematically shows an assembly relationship diagram between the electrode pins in the surge protection device in Embodiment 2.
  • FIG. 17 schematically shows a schematic diagram of a current fuse installed on the movable support in Embodiment 2.
  • FIG. 18 schematically shows a schematic diagram of the surge protection device in the third embodiment.
  • FIG. 19 schematically shows a schematic diagram of another surge protection device in the third embodiment.
  • FIG. 20 schematically shows a schematic diagram of the movable support of the surge protection device in the fourth embodiment.
  • this embodiment provides a surge protection device with high breaking capacity, including a housing 1 with two lead electrodes 10a, 10b, and a voltage-limiting device 2 installed in the housing 1. And thermal tripping mechanism 3.
  • the circuit principle of the surge protection device is shown in Figs. 1 and 2, wherein Fig. 1 shows the principle diagram before operation, and Fig. 2 shows the principle diagram after operation.
  • the voltage limiting device 2 includes a voltage limiting device 20, a first electrode 21, a second electrode 22 and an insulating cover 23.
  • the voltage-limiting device 20 may be a voltage-limiting element such as a varistor or a transient voltage suppressor.
  • the voltage-limiting device 20 is a varistor as an example. Both ends of the voltage limiting device 20 are electrically connected to the first electrode 21 and the second electrode 22, and the voltage limiting device 20, the first electrode 21 and the second electrode 22 are all installed in the insulating cover 23, and the gap in the insulating cover 23 It can also be filled with insulating colloids such as epoxy resin and silica gel.
  • the thermal trip mechanism 3 includes a fixed assembly 30, a movable assembly 31, an energy storage member 32 and a thermal trigger device 33.
  • the fixed assembly 30 includes a fixed support 300 and n (n ⁇ 2) fixed electrodes 301 fixed on the fixed support 300, and the fixed electrodes 301 are disconnected from each other and are in a non-conducting state.
  • the moving assembly 31 includes a moving support 310 and n+1 moving electrodes 311 fixed on the moving support 310, and a gap (Gn) is formed between two adjacent moving electrodes 311, namely the first moving electrode 311 and the second moving electrode 311.
  • a fracture (G1) is formed between the movable electrodes 311
  • a fracture (G2) is formed between the second movable electrode 311 and the third movable electrode 311
  • a fracture (G2) is formed between the third movable electrode 311 and the fourth movable electrode 311.
  • a fracture (Gn) is formed between the n-th movable electrode 311 and the n+1-th movable electrode 311, and the n+1 movable electrodes 311 form a total of n fractures arranged in series.
  • the gap (Gn) should not be less than 0.1mm to avoid reignition of the arc, and more preferably 0.6 ⁇ 1.5mm. While avoiding reignition of the arc, it also ensures that the occupied space will not be too large. .
  • the energy storage element 32 acts on the above-mentioned movable support 310 to enable the movable support 310 to produce a certain relative displacement relative to the fixed support 300, so that the thermal trip mechanism 3 has the movable support 310 not displaced relative to the fixed support 300 The first state, and the second state after displacement.
  • the movable support 310 and the fixed support 300 are in the first state, all the fixed electrodes 301 are in contact with the two adjacent movable electrodes 311 corresponding to them, and the conduction between all the fixed electrodes 301 is realized. That is, the first fixed electrode 301 is in contact with the first movable electrode 311 and the second movable electrode 311, the second fixed electrode 301 is in contact with the second movable electrode 311 and the third movable electrode 311, and the third fixed electrode 301 is in contact with the third movable electrode 311 and the fourth movable electrode 311, ..., the n-th fixed electrode 301 is in contact with the n-th movable electrode 311 and the n+1-th movable electrode 311.
  • the fracture formed between the two adjacent movable electrodes 311 is exactly at the break between the two adjacent fixed electrodes 301, so that the fixed electrode 301 is only connected to one of the movable electrodes. 311 contacts, so that the fixed electrodes 301 are disconnected from each other and are in a non-conducting state.
  • the first fixed electrode 301 is only in contact with the first moving electrode 311
  • the second fixed electrode 301 is only in contact with the second moving electrode 311
  • the n-th fixed electrode 301 is only in contact with the n-th moving electrode 311 contact.
  • the first fixed electrode 301 is only in contact with the second movable electrode 311
  • the second fixed electrode 301 is only in contact with the third movable electrode 311
  • the n-th fixed electrode 301 is only in contact with the n+1th
  • the movable electrode 311 is in contact.
  • the thermal trigger device 33 includes a trigger metal sheet 330 fixed at one end on the fixed support 300, and the other end of the trigger metal sheet 330 is fixed on the second electrode 22 of the voltage limiting device 2 by welding with fusible alloy.
  • the fusible alloys mentioned here generally refer to metals and their alloys whose melting point is below 300°C. For example, they are composed of low melting point metal elements such as Bi, Sn, Pb, and In. When these metals are combined in different proportions (binary, Ternary or quaternary alloys), alloys with different melting points can be obtained.
  • the trigger metal piece 330 can be made of materials such as brass, bronze, cupronickel, etc., and the trigger metal piece 330 is directly welded and fixed to the second electrode 22, which is more conducive to the heat transfer of the voltage-limiting device 2 to the welding point, thereby making it easy to melt The alloy melts to achieve the tripping, so that the trigger metal sheet 330 thermal tripping is more timely.
  • the movable support 310 When the trigger metal piece 330 and the second electrode 22 of the voltage-limiting device 2 are welded and fixed, the movable support 310 does not move relative to the fixed support 300, and the thermal trip mechanism 3 is in the first state. At this time, the thermal trip The mechanism 3 is in a conducting state.
  • the thermal trip The mechanism 3 When the heat of the voltage-limiting device 2 is higher than the set value, the fusible alloy welding point of the trigger metal piece 330 and the second electrode 22 welded and fixed is melted, and under the force of the energy storage member 32, the movable support 310 is relative to the fixed support 300 displacement occurs, and the effective disconnection of the fracture is maintained, the main circuit is disconnected, and the thermal trip protection is realized.
  • the fusible alloy used as the thermal trigger medium solder joint in the thermal trip is not connected to the circuit, so there is no thermal protection device caused by the flow of surge current.
  • the phenomenon of false tripping or early tripping, and in the process of disconnecting the arc under the system voltage, multiple ( ⁇ 2) series-connected fractures have a higher arc voltage drop than a single fracture, which can limit the magnitude of the arc current.
  • Sufficient fracture gaps can limit the current within a safe range, and avoid the risk of misoperation caused by thermal and electrodynamic effects caused by the thermal and electrodynamic effects of the thermal trigger medium of the traditional surge protector thermal separation device due to the passing of the lightning current.
  • the above-mentioned fixed component 30 and moving component 31 can adopt a scheme in which the moving component 31 rotates relative to the fixed component 30 to achieve displacement as shown in the figure, but it is not limited to this, and the moving component 31 can also be displaced relative to the fixed component 30.
  • the aforementioned energy storage member 32 is a torsion spring
  • the aforementioned energy storage member 32 is a compression spring.
  • the solution of generating displacement by rotating motion is adopted. Compared with the solution of generating position by linear motion, the solution of generating displacement by rotating motion can make the structure of the thermal trip mechanism 3 more compact and more compact. Need volume.
  • the above-mentioned movable support 310 and fixed support 300 form a structure similar to a stator and a rotor.
  • the fixed bracket 300 has a substantially cylindrical cavity for accommodating the movable bracket 310, and a rotating shaft 302 at the center of the cavity.
  • the movable bracket 310 is pivotally connected to the fixed bracket 300 through the rotating shaft 302. And has a generally cylindrical outer peripheral wall.
  • the n fixed electrodes 301 on the fixed support 300 are sequentially fixed on the inner peripheral wall of the cavity, and the n movable electrodes 311 on the movable support 310 are sequentially fixed on the outer peripheral wall of the movable support 310.
  • the center of the torsion spring as the energy storage member 32 is sleeved on the rotating shaft 302, and at the same time, one leg of the torsion spring is fixed on the fixing position of the fixed bracket 300, and the other leg is fixed on the fixing position of the movable bracket.
  • the torsion force can push the movable assembly 31 to rotate in a certain direction with the rotating shaft 302 as the center (in this embodiment, the clockwise direction is taken as an example).
  • the trigger metal piece 330 in this embodiment has a substantially L-shaped structure, one end of which is fixed on the movable support 310, and the other end extends to the outside of the movable support 310 and is welded to the second electrode 22 to limit the rotation of the movable assembly 31.
  • the movable bracket 310 and the fixed bracket 300 are provided with limit locking points matched with each other, and the limit locking points can limit the rotation angle and direction of the movable assembly 31 relative to the fixed assembly 30.
  • the limiting locking point is protrudingly provided on the protrusion 312 on the outer peripheral wall of the movable bracket 310, and the inner wall of the cavity of the fixed bracket 300 is provided with the protrusion 312 corresponding to the rotation angle of the movable component.
  • the relief groove 303, the protrusion 312 can only move in the relief groove 303, so that when the metal sheet 330 is triggered to trip, the protrusion 312 can limit the angle of rotation of the movable support 310 to make the movable support 310
  • the upper fracture is located exactly at the break between two adjacent fixed electrodes 301 to ensure the port of the circuit and ensure safety.
  • the electrodes in this embodiment are preferably made of copper or copper alloy, and the electrodes in this embodiment are all copper electrodes as an example.
  • the housing 1, the insulating cover 23, the fixed bracket 300, and the movable bracket 310 are preferably made of highly flame-retardant and high-temperature resistant materials, and more preferably made of materials such as polyphenylene sulfide (PPS), polyimide (PI), and polyimide.
  • PPS polyphenylene sulfide
  • PI polyimide
  • PES polyphenylene sulfide
  • PEEK Ether ether ketone
  • PSF polysulfone
  • other special engineering plastics make it not only has high flame retardant and high temperature resistance, but also has the advantages of high strength, shock resistance, and drop resistance to ensure the surge protector Safety and durability.
  • the first electrode 21 and the second electrode 22 of the voltage-limiting device 2 respectively have a first electrode lead-out portion 210 and a first electrode lead-out portion 210 and a second electrode extending outside the insulating cover 23.
  • the first fixed electrode 301 and the n-th fixed electrode 301 on the fixed assembly 30 have fixed electrode lead-out portions 301a and 301b, respectively.
  • the first electrode lead-out portion 210 is arranged next to one lead-out electrode 10a
  • the second electrode lead-out portion 220 is located next to the fixed electrode lead-out portion 301a
  • the fixed electrode lead-out portion 301b is located next to the other lead-out electrode 10b, so as to facilitate between these electrodes.
  • the close-to-close arrangement mentioned here means that the two are in close contact with each other or can be directly welded and fixed with a small distance.
  • This embodiment also provides a surge protection device with high breaking capacity.
  • the surge protection device has basically the same structure as the surge protection device in Embodiment 1. The difference is that, referring to Figures 13-15, both The application protection mode is different.
  • a current fuse is connected in parallel to each of the n (n ⁇ 2) series-connected fractures, where k ⁇ n.
  • the circuit principle of the surge protection device is shown in Figure 13-15, where Figure 13 shows the principle diagram before operation, Figure 14 shows the principle diagram during operation, and Figure 15 shows the principle diagram after operation. Schematic diagram.
  • the voltage-limiting device 20 in this embodiment is the same as that of Embodiment 1, and the voltage-limiting device 20 is also used as an example of a varistor for description.
  • the surge protection device uses current insurance to shunt, first extinguishes the arc of the fracture, and then the fuse is blown in a segmented process, because the fuse itself has a higher current breaking capacity than a single fracture, thereby further improving the current The segmentation capability of the surge protection device.
  • the k current fuses Fk are arranged in parallel with the movable electrodes 311 on both sides of the even-numbered openings (G2, G4, G6).
  • the movable bracket 310 is provided with a plurality of fixing slots 314 for placing current fuses.
  • the movable bracket 310 is equipped with two current fuses F1 and F2 as an example for description.
  • the current fuse Fk can be placed in the corresponding fixing slot 314, and each fixing slot 314 is connected with two oppositely arranged card slots 315, and the two pins of the current fuse fixed in the fixing slot 314 can pass through the two cards
  • the groove 315 is in contact and conduction with the fixed electrodes on both sides of the corresponding fracture, thereby facilitating the fixation of the current fuse and the conduction with the corresponding fixed electrodes.
  • This embodiment also provides a surge protection device with high breaking capacity.
  • the surge protection device has basically the same structure as the surge protection device in Embodiment 1 or Embodiment 2. The difference is that in this embodiment The surge protection device also has a remote signal switch or window linked with the moving assembly 31 to give a failure signal.
  • the remote signal switch 4 is taken as an example for description.
  • the remote signaling switch 4 is fixed in the housing 1, and the pins of the remote signaling switch 4 extend to the outside of the housing 1.
  • the movable support 310 has a remote signal triggering part 316 that triggers the remote signal switch 4 with the synchronous rotation of the movable support 310.
  • the trigger metal piece 330 is thermally tripped to cause the movable support 310 to rotate
  • the remote signal triggering portion 316 acts on the remote signal switch 4 to cause the remote signal switch 4 to trigger a failure alarm.
  • FIG. 18 corresponds to a schematic diagram of the surge protection device in Embodiment 1 adding a remote signal switch
  • FIG. 19 corresponds to a schematic diagram of the surge protection device in Embodiment 2 adding a remote signal switch.
  • the above-mentioned remote signal triggering portion 316 is the raised portion 312 in the first embodiment, that is, the raised portion 312 serves as a member for restricting the rotation angle of the movable bracket 310 and also serves as a trigger for the remote signal switch
  • the remote signal trigger part 316 of 4 eliminates the need to add corresponding structures or functional parts to the movable support 310, which can make the structure of the movable support 310 simpler and more compact.
  • This embodiment also provides a surge protection device with high breaking capacity.
  • the surge protection device has basically the same structure as the surge protection device in Embodiment 1 or Embodiment 2. The difference is that, referring to FIG. 20,
  • the movable electrode 311 in Embodiment 1 or Embodiment 2 is an electrode made of copper or copper alloy, and the movable electrode 311 in this embodiment is a graphite electrode.
  • the movable electrode 311 of corresponding material can be selected according to the requirements of the protection mode.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Breakers (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Fuses (AREA)

Abstract

一种具有高分断能力的电涌保护装置,包括具有至少两引出电极(10a、10b)的外壳(1)以及安装于外壳(1)内的限压型器件(2)和热脱扣机构(3),所述热脱扣机构(3)包括定组件(30)、动组件(31)和热触发装置(33),所述定组件(30)和动组件(31)形成串联设置的多个位移开关,所述热触发装置(33)与动组件(31)联动设置,以解决现有的电涌保护装置的热保护装置不具备过电流保护功能以及浪涌电流流过时热保护装置易出现误脱扣或提前脱扣的问题。

Description

一种具有高分断能力的电涌保护装置
本申请要求在2019年9月29日提交中国专利局、申请号为201910932326.0、发明名称为“一种具有高分断能力的电涌保护装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及过压保护技术领域,具体是涉及一种具有高分断能力的电涌保护装置。
背景技术
电涌保护装置是一种连接在电子设备或低压配电系统中的过电压保护装置,其主要用于泄放雷电流、雷电感应和开关操作引起的浪涌电流,并限制过电压的幅值,从而避免浪涌电流对回路中其他设备的损害。
为了提高过电压的限制能力,通常需要在配电盘或设备前端配置限压型的电涌保护器。限压型的电涌保护器存在以下两个突出的问题:
1、限压型的电涌保护器的关键器件,如压敏电阻、瞬态电压抑制器等,其失效模式绝大多数情况均为热崩溃导致的短路,因此需要增加热保护功能,但是,热保护装置通常不具备过电流保护功能,仅能切断数十安培的交流电流或数A的直流电流,如果限压型的器件出现短路失效而热保护装置没有启动,导致数百数千安培的短路电流出现,电涌保护器自身无法切断故障电流,需要外接过流保护装置来切断故障电流,否则会有火灾危险;而外接过流保护装置来保护电涌保护器还存在浪涌电流承受能力、过电流保护启动电流难以配合、残压高、成本高等业内公认的难题。
2、限压型的电涌保护器的热保护装置采用低熔点合金作为热触发介质,并与限压性器件串联并形成电连接通路通。热触发介质通常选择100-160℃之间的熔点温度,在浪涌电流流过时易出现热保护装置误脱扣或提前脱扣的现象。其原因在于限压型器件在浪涌电流流过的过程中的发热、热触发介质熔点低、热触发介质流过浪涌电流存在热效应和电动力效应、热触发介质材质脆等因素相互影响。
为了避免以上两种情况对电涌保护器的不利影响,本发明提出一种具有 高分断能力的电涌保护器。
发明内容
本发明旨在提供一种具有高分断能力的电涌保护装置,以解决现有的电涌保护装置的热保护装置不具备过电流保护功能以及浪涌电流流过时热保护装置易出现误脱扣或提前脱扣的问题。
具体方案如下:
一种具有高分断能力的电涌保护装置,包括具有至少两引出电极的外壳以及安装于外壳内的限压型器件和热脱扣机构,其中,
所述限压型器件包括定位安装于绝缘盖体内的限压器件、第一电极和第二电极;
所述热脱扣机构包括定组件、动组件和热触发装置,所述定组件和动组件形成串联设置的多个位移开关,所述热触发装置与动组件联动设置,其包括触发金属片、易熔合金和蓄能件,所述触发金属片的一端固设于动组件上,另一端通过易熔合金焊接固定于第二电极上,以限制所述动组件相对所述动组件位移,并使所述蓄能件蓄积使动组件相对定组件位移的势能;
所述第一电极与引出电极的其一电连接设置,串联的多个位移开关的两端分别与第二电极以及另一引出电极电连接设置。
进一步的,所述定组件包括定支架以及依序固定于定支架上的n个定电极,其中n≥2,且各定电极之间相互断开设置;所述动组件包括动支架以及依序固定于动支架上的n+1个动电极,且相邻两动电极之间均形成一断口,且所述动支架具有相对于定支架未发生位移的第一状态,以及发生位移后的第二状态;在第一状态下,每一定电极均和与之对应的相邻两动电极接触,而使所有定电极之间的导通;在第二状态下,相邻两动电极之间形成的断口恰好位于与之对应的相邻两定电极之间的断开处,以使各定电极之间相互断开而处于非导通状态。
进一步的,所述动支架和定支架上设置有相互配合设置的限位结构,该限位结构能够限制所述动支架的相对于定支架的位移距离或者角度。
进一步的,所述限位结构为分别设置于动支架和定支架上的凸起部以及让位槽。
进一步的,所述断口间距不小于0.1mm。
进一步的,所述定支架上具有一大致呈圆柱形的凹腔,该凹腔中心处具 有一转轴,所述动支架通过该转轴枢接于该定支架上,且具有与凹腔内壁相当设置的外周壁,所述定电极固设于所述凹腔的内壁上,所述动电极固设于所述动支架的外周壁上。
进一步的,所述限压型器件的第一电极和第二电极分别具有延伸至绝缘盖体外的第一电极引出部和第二电极引出部,所述定组件上的第1个定电极和第n个定电极均具有一定电极引出部,其中,第一电极引出部与一引出电极、第二电极引出部与一定电极引出部、另一定电极引出部与另一引出电极分别紧邻设置。
进一步的,所述电涌保护装置在n个串联的断口的k个断口上分别并联有一电流保险丝,其中k≤n。
进一步的,所述偶数断口两侧的动电极均与一电流保险丝并联设置。
进一步的,所述动支架上设置有用于放置电流保险丝的多个固定槽,且每一固定槽上都连通有两相对设置的卡槽,固定于该固定槽内的电流保险丝的两引脚可以通过该两卡槽与相应断口两侧的定电极接触导通。
进一步的,还包括与动组件联动设置的遥信开关或视窗。
本发明提供的具有高分断能力的电涌保护装置与现有技术相比较具有以下优点:本发明提供的电涌保护装置中的热脱扣机构中作为热触发介质焊点的易熔合金并未接入电路,因此不存在浪涌电流流过而导致热保护装置误脱扣或提前脱扣的现象,而且在系统电压下断开电弧的过程中,多个(≥2)串联的断口较单一的断口具有更高的弧压降,可以限制电弧电流的大小,足够多的断口间隙可以将电流限制在安全的范围之内,既避免了传统电涌保护器热脱离装置的热触发介质由于要通过雷电流而因热效应和电动力效应引起的误动作的风险,也避免了限压型器件短路失效的大电流引发的着火风险。
上述说明仅是本发明技术方案的概述,为了能够更清楚了解本发明的技术手段,而可依照说明书的内容予以实施,并且为了让本发明的上述和其它目的、特征和优点能够更明显易懂,以下特举本发明的具体实施方式。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍,显而易见地,下 面描述中的附图是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1示意性地示出了实施例1中的电涌保护装置热脱扣动作前的电路原理图。
图2示意性地示出了实施例2中的电涌保护装置热脱扣动作后的电路原理图。
图3示意性地示出了实施例1中的电涌保护装置的主视图。
图4示意性地示出了实施例1中的电涌保护装置的爆炸图。
图5示意性地示出了实施例1中的限压型器件的爆炸图。
图6示意性地示出了实施例1中的限压型器件的装配图。
图7示意性地示出了实施例1中的热脱扣机构热脱扣动作前的示意图。
图8示意性地示出了实施例1中的热脱扣机构热脱扣动作后的示意图。
图9示意性地示出了实施例1中的定支架的示意图。
图10示意性地示出了实施例1中的动支架的示意图。
图11示意性地示出了实施例1中的电涌保护装置中各电极引脚之间的装配示意图。
图12示意性地示出了实施例1中电涌保护装置中各电极引脚之间的装配关系图。
图13示意性地示出了实施例2中的电涌保护装置热脱扣动作前的电路原理图。
图14示意性地示出了实施例2中的电涌保护装置热脱扣动作中的电路原理图。
图15示意性地示出了实施例2中的电涌保护装置热脱扣动作后的电路原理图。
图16示意性地示出了实施例2中的电涌保护装置中各电极引脚之间的装配关系图。
图17示意性地示出了实施例2中的动支架上安装有电流保险丝的示意图。
图18示意性地示出了实施例3中的电涌保护装置的示意图。
图19示意性地示出了实施例3中的另一电涌保护装置的示意图。
图20示意性地示出了实施例4中的电涌保护装置的动支架的示意图。
具体实施例
为进一步说明各实施例,本发明提供有附图。这些附图为本发明揭露内容的一部分,其主要用以说明实施例,并可配合说明书的相关描述来解释实施例的运作原理。配合参考这些内容,本领域普通技术人员应能理解其他可能的实施方式以及本发明的优点。图中的组件并未按比例绘制,而类似的组件符号通常用来表示类似的组件。
现结合附图和具体实施方式对本发明进一步说明。
实施例1
如图1-图10所示的,本实施例提供了一种具有高分断能力的电涌保护装置,包括具有两引出电极10a、10b的外壳1以及安装于外壳1内的限压型器件2和热脱扣机构3。该电涌保护装置的电路原理如图1和图2所示,其中图1示出的是动作前的原理图,图2示出的是动作后的原理图。
其中,参考图3-图6,限压型器件2包括限压器件20、第一电极21、第二电极22和绝缘盖体23。其中限压器件20可以是诸如压敏电阻、瞬态电压抑制器等限压元件,本实施例中以限压器件20为压敏电阻为例。限压器件20两端分别电连接第一电极21和第二电极22,并且限压器件20、第一电极21和第二电极22均安装于绝缘盖体23内,绝缘盖体23内的缝隙还可以填充环氧树脂、硅胶等绝缘胶体。
参考图7-图10,热脱扣机构3包括定组件30、动组件31、蓄能件32和热触发装置33。其中,定组件30包括定支架300以及固定于定支架300上的n个(n≥2)定电极301,且各定电极301之间相互断开设置,处于非导通状态。
动组件31包括动支架310以及固定于动支架310上的n+1个动电极311,且相邻两动电极311之间形成一断口(Gn),即第1个动电极311和第2个动电极311之间形成断口(G1),第2个动电极311和第3个动电极311之间形成断口(G2),第3个动电极311和第4个动电极311之间形成断口(G3),……,第n个动电极311与第n+1个动电极311之间形成断口(Gn),n+1个动电极311总共形成n个串联设置的断口。在本实施中,断口(Gn)间距应不小于0.1mm,以避免电弧重燃,其中更优选为0.6~1.5mm,在满足 避免电弧重燃的同时,也保证所占用的空间不会太大。
蓄能件32作用于上述的动支架310,以使该动支架310能够相对于定支架300产生一定的相对位移,从而使得该热脱扣机构3具有动支架310相对于定支架300未发生位移的第一状态,以及发生位移后的第二状态。
当动支架310和定支架300处于第一状态时,所有定电极301均和与之对应的相邻两动电极311接触,而实现所有定电极301之间的导通。即第1个定电极301与第1个动电极311和第2个动电极311接触,第2个定电极301与第2个动电极311和第3个动电极311接触,第3个定电极301与第3个动电极311和第4个动电极311接触,……,第n个定电极301与第n个动电极311和第n+1个动电极311接触。
而当动支架310和定支架300处于第二状态时,相邻两动电极311之间形成的断口恰好位于相邻两定电极301之间的断开处,使得定电极301仅与其中一动电极311接触,以使各定电极301之间相互断开,处于非导通状态。如,第1个定电极301仅与第1个动电极311接触,第2个定电极301仅与第2个动电极311接触,……,第n个定电极301仅与第n个动电极311接触。或者,第1个定电极301仅与第2个动电极311接触,第2个定电极301仅与第3个动电极311接触,……,第n个定电极301仅与第n+1个动电极311接触。
热触发装置33包括一端固设于定支架300上的触发金属片330,触发金属片330的另一端通过易熔合金焊接固定在限压型器件2的第二电极22上。这里所说的易熔合金通常是指熔点在300℃以下的金属及其合金,例如,由Bi、Sn、Pb、In等低熔点金属元素组成,当这些金属以不同比例化合时(二元、三元或四元合金),可以得到熔点不同的合金。触发金属片330可采用黄铜、青铜、白铜等材料制成,而且触发金属片330直接与第二电极22焊接固定,更有利于限压型器件2的热量传递至焊接点,从而使易熔合金熔化而实现脱扣,使得该触发金属片330热脱扣更及时。
当触发金属片330和限压型器件2的第二电极22焊接固定时,动支架310相对于定支架300未发生位移,该热脱扣机构3处于第一状态,此时,该热脱扣机构3处于导通状态。而当限压型器件2发热高于设定值时,触发 金属片330与第二电极22焊接固定的易熔合金焊接点熔化,在蓄能件32的作用力下,动支架310相对于定支架300发生位移,并保持断口的有效断开,断开主路,实现热脱扣保护。
本实施例中提供的具有高分断能力的电涌保护装置,热脱扣中作为热触发介质焊点的易熔合金并未接入电路,因此不存在在浪涌电流流过而导致热保护装置误脱扣或提前脱扣的现象,而且在系统电压下断开电弧的过程中,多个(≥2)串联的断口较单一的断口具有更高的弧压降,可以限制电弧电流的大小,足够多的断口间隙可以将电流限制在安全的范围之内,避免了传统电涌保护器热脱离装置的热触发介质由于要通过雷电流而因热效应和电动力效应引起的误动作的风险。
上述的定组件30、动组件31可以采用如附图中动组件31相对于定组件30旋转运动而实现位移的方案,但并不限定于此,还可以是动组件31相对于定组件30发生直线运动而实现位移的方案,在通过旋转运动产生位移的方案时,上述的蓄能件32为扭簧,而通过直线运动产生位移的方案时,上述的蓄能件32为压簧。而本实施例中采用的是通过旋转运动产生位移的方案,其相对于通过直线运动产生位于的方案,本采用旋转运动产生位移的方案可以使得该热脱扣机构3的结构更加的紧凑而所需体积。
具体的,上述的动支架310和定支架300构成类似定子、转子的结构。定支架300上具有一用于容置动支架310、且大致呈圆柱形的凹腔,以及位于该凹腔中心处的一转轴302,动支架310通过该转轴302枢接在定支架300上,且具有大致圆柱形的外周壁。上述定支架300上的n个定电极301依序固定于凹腔的内周壁上,动支架310上的n各动电极311则依序固定于动支架310的外周壁上。
作为蓄能件32的扭簧中心套设于转轴302上,同时扭簧的一支脚固定在定支架300的卡位上,另一支脚固定在动支架的卡位上,固定好的扭簧的扭力可以推动动组件31以转轴302为圆心朝一定方向旋转(本实施中以顺时针方向为例)。
本实施例中的触发金属片330为大致呈L形结构,其一端固定于动支架310上,另一端则延伸至动支架310外与第二电极22焊接固定,以限制动组 件31的旋转。
优选的,动支架310和定支架300上具有相互匹配设置的限位卡点,该限位卡点能够限制动组件31相对于定组件30的旋转角度和方向。如本实施例中的限位卡点凸设于动支架310外周壁上的凸起部312,定支架300凹腔的内壁上具有与该凸起部312匹配设置,且对应动组件旋转角度的让位槽303,该凸起部312仅能够在让位槽303内运动,以使在触发金属片330脱扣时,该凸起部312能够限制动支架310旋转的角度,以使动支架310上的断口恰好位于相邻两定电极301之间的断开处,以确保电路的端口,保证安全性。
另外,本实施例中的各电极从成本以及导电性上的考量,各电极优选采用铜或者铜合金制成,而本实施例中的电极也均是以其为铜电极为例来进行说明的。而外壳1、绝缘盖体23、定支架300、动支架310优选采用高阻燃、耐高温的材料制成,更优选由诸如聚苯硫醚(PPS)、聚酰亚胺(PI)、聚醚醚酮(PEEK)及聚砜(PSF)等特种工程塑料,使其在具有高阻燃、耐高温性能的同时还兼具高强度、抗震、抗跌落等优势,以保证该电涌保护器的安全性以及耐用性。
作为本实施例的一优选实施方式,参考图1-图10,限压型器件2的第一电极21和第二电极22分别具有延伸至绝缘盖体23外的第一电极引出部210和第二电极引出部220。定组件30上的第1个定电极301和第n个定电极301分别具有定电极引出部301a、301b。其中,第一电极引出部210与一引出电极10a紧邻设置,第二电极引出部220与定电极引出部301a紧邻设置,定电极引出部301b与另一引出电极10b紧邻设置,以便于这些电极之间的实现电连接。这里所说的紧邻设置是指两者之间相互贴合接触或者具有小的间距可直接焊接固定。
实施例2
本实施例也提供了一种具有高分断能力的电涌保护装置,该电涌保护装置与实施例1中的电涌保护装置的结构基本相同,其差别在于,参考图13-图15,两者的应用保护模式不同,本实施例中的电涌保护装置在n个(n≥2)串联的断口的k个断口上分别并联有一电流保险丝,其中k≤n。该 电涌保护装置的电路原理如图13-图15所示,其中图13示出的是动作前的原理图,图14示出的是动作中的原理图,图15示出的是动作后的原理图。本实施例中限压器件20和实施例1相同,也以限压器件20为压敏电阻为例来进行说明。
该电涌保护装置利用电流保险分流,先使得断口的电弧熄灭,然后是保险丝的熔断个分段过程,因为保险丝相比于单一断口,其本身具有较高的电流分断能力,从而进一步提高该电涌保护装置的分段能力。
优选的,参考图16,k个电流保险丝Fk是与偶数断口(G2、G4、G6……)两侧的动电极311并联设置。具体的,参考图17,动支架310上设置有用于放置电流保险丝的多个固定槽314,本实施例中以动支架310安装有两个电流保险丝F1、F2为例来进行说明。电流保险丝Fk可放置于对应的固定槽314内,且每一固定槽314上都连通有两相对设置的卡槽315,固定于该固定槽314内的电流保险丝的两引脚可以通过该两卡槽315与相应断口两侧的定电极接触导通,从而便于电流保险丝的固定以及与对应定电极的导通。
实施例3
本实施例也提供了一种具有高分断能力的电涌保护装置,该电涌保护装置与实施例1或实施例2中的电涌保护装置的结构基本相同,其差别在于,本实施例中的电涌保护装置还具有与动组件31联动的遥信开关或视窗,以给出失效信号。
本实施例中以遥信开关4为例来进行说明。参考图18和图19,遥信开关4固设于外壳1内,且该遥信开关4的引脚延伸至外壳1外部。动支架310上具有随该动支架310同步旋转而触发遥信开关4的遥信触发部316。当触发金属片330发生热脱扣而致使动支架310旋转时,该遥信触发部316作用于该遥信开关4而使该遥信开关4触发失效报警。其中,图18对应的是实施例1中的电涌保护装置增加遥信开关的示意图,图19对应的是实施例2中的电涌保护装置增加遥信开关的示意图。
作为本实施例一优选的,上述的遥信触发部316为实施例1中的凸起部312,即该凸起部312即作为限制动支架310旋转角度部件的同时,也作为 触发遥信开关4的遥信触发部316,使得该动支架310上无需额外增加相应的结构或者功能件,可使得该动支架310的结构更简单以及紧凑。
实施例4
本实施例也提供了一种具有高分断能力的电涌保护装置,该电涌保护装置与实施例1或实施例2中的电涌保护装置的结构基本相同,其差别在于,参考图20,实施例1或实施例2中的动电极311为铜或者铜合金制成的电极,而本实施例中的动电极311是石墨电极。可以根据保护模式需要而选择对应材质的动电极311。
尽管结合优选实施方案具体展示和介绍了本发明,但所属领域的技术人员应该明白,在不脱离所附权利要求书所限定的本发明的精神和范围内,在形式上和细节上可以对本发明做出各种变化,均为本发明的保护范围。
本文中所称的“一个实施例”、“实施例”或者“一个或者多个实施例”意味着,结合实施例描述的特定特征、结构或者特性包括在本发明的至少一个实施例中。此外,请注意,这里“在一个实施例中”的词语例子不一定全指同一个实施例。
在此处所提供的说明书中,说明了大量具体细节。然而,能够理解,本发明的实施例可以在没有这些具体细节的情况下被实践。在一些实例中,并未详细示出公知的方法、结构和技术,以便不模糊对本说明书的理解。

Claims (11)

  1. 一种具有高分断能力的电涌保护装置,其特征在于:包括具有至少两引出电极的外壳以及安装于外壳内的限压型器件和热脱扣机构,其中,
    所述限压型器件包括定位安装于绝缘盖体内的限压器件、第一电极和第二电极;
    所述热脱扣机构包括定组件、动组件和热触发装置,所述定组件和动组件形成串联设置的多个位移开关,所述热触发装置与动组件联动设置,其包括触发金属片、易熔合金和蓄能件,所述触发金属片的一端固设于动组件上,另一端通过易熔合金焊接固定于第二电极上,以限制所述动组件相对所述动组件位移,并使所述蓄能件蓄积使动组件相对定组件位移的势能;
    所述第一电极与引出电极的其一电连接设置,串联的多个位移开关的两端分别与第二电极以及另一引出电极电连接设置。
  2. 根据权利要求1所述的电涌保护装置,其特征在于:所述定组件包括定支架以及依序固定于定支架上的n个定电极,其中n≥2,且各定电极之间相互断开设置;所述动组件包括动支架以及依序固定于动支架上的n+1个动电极,且相邻两动电极之间均形成一断口,且所述动支架具有相对于定支架未发生位移的第一状态,以及发生位移后的第二状态;在第一状态下,每一定电极均和与之对应的相邻两动电极接触,而使所有定电极之间的导通;在第二状态下,相邻两动电极之间形成的断口恰好位于与之对应的相邻两定电极之间的断开处,以使各定电极之间相互断开而处于非导通状态。
  3. 根据权利要求2所述的电涌保护装置,其特征在于:所述动支架和定支架上设置有相互配合设置的限位结构,该限位结构能够限制所述动支架的相对于定支架的位移距离或者角度。
  4. 根据权利要求3所述的电涌保护装置,其特征在于:所述限位结构为分别设置于动支架和定支架上的凸起部以及让位槽。
  5. 根据权利要求2所述的电涌保护装置,其特征在于:所述断口的间距不小于0.1mm。
  6. 根据权利要求2所述的电涌保护装置,其特征在于:所述定支架上具有一大致呈圆柱形的凹腔,该凹腔中心处具有一转轴,所述动支架通过该 转轴枢接于该定支架上,且具有与凹腔内壁相当设置的外周壁,所述定电极固设于所述凹腔的内壁上,所述动电极固设于所述动支架的外周壁上。
  7. 根据权利要求6所述的电涌保护装置,其特征在于:所述限压型器件的第一电极和第二电极分别具有延伸至绝缘盖体外的第一电极引出部和第二电极引出部,所述定组件上的第1个定电极和第n个定电极均具有一定电极引出部,其中,第一电极引出部与一引出电极、第二电极引出部与一定电极引出部、另一定电极引出部与另一引出电极分别紧邻设置。
  8. 根据权利要求2所述的电涌保护装置,其特征在于:所述电涌保护装置在n个串联的断口的k个断口上分别并联有一电流保险丝,其中k≤n。
  9. 根据权利要求8所述的电涌保护装置,其特征在于:偶数断口两侧的动电极均与一电流保险丝并联设置。
  10. 根据权利要求8所述的电涌保护装置,其特征在于:所述动支架上设置有用于放置电流保险丝的多个固定槽,且每一固定槽上都连通有两相对设置的卡槽,固定于该固定槽内的电流保险丝的两引脚可以通过该两卡槽与相应断口两侧的定电极接触导通。
  11. 根据权利要求2所述的电涌保护装置,其特征在于:还包括与动组件联动设置的遥信开关或视窗。
PCT/CN2020/100457 2019-09-29 2020-07-06 一种具有高分断能力的电涌保护装置 WO2021057163A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20869674.0A EP3972068B1 (en) 2019-09-29 2020-07-06 Surge protection device having high breaking capacity
US17/623,856 US11742656B2 (en) 2019-09-29 2020-07-06 Surge protection device with high breaking capacity

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910932326.0A CN110492463A (zh) 2019-09-29 2019-09-29 一种具有高分断能力的电涌保护装置
CN201910932326.0 2019-09-29

Publications (1)

Publication Number Publication Date
WO2021057163A1 true WO2021057163A1 (zh) 2021-04-01

Family

ID=68544294

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/100457 WO2021057163A1 (zh) 2019-09-29 2020-07-06 一种具有高分断能力的电涌保护装置

Country Status (4)

Country Link
US (1) US11742656B2 (zh)
EP (1) EP3972068B1 (zh)
CN (1) CN110492463A (zh)
WO (1) WO2021057163A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110492463A (zh) * 2019-09-29 2019-11-22 厦门赛尔特电子有限公司 一种具有高分断能力的电涌保护装置
US11862967B2 (en) * 2021-09-13 2024-01-02 Raycap, S.A. Surge protective device assembly modules

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5321574A (en) * 1992-01-17 1994-06-14 Siemens Energy & Automation, Inc. Circuit breaker/surge arrestor package in which the arrestor uses an MOV that is thermally de-coupled from the breaker's thermal trip circuit
CN101692393A (zh) * 2009-09-11 2010-04-07 辽宁金立电力电器有限公司 有载调节20kv及以下电网中调容变压器的开关
CN107424881A (zh) * 2017-09-18 2017-12-01 广西新全通电子技术有限公司 一种快速分断的电涌保护器及其应用
CN107516885A (zh) * 2017-09-18 2017-12-26 广西新全通电子技术有限公司 一种双分离的防弧型电涌保护装置及其应用
CN209434871U (zh) * 2019-01-29 2019-09-24 厦门赛尔特电子有限公司 一种浪涌保护器
CN110492463A (zh) * 2019-09-29 2019-11-22 厦门赛尔特电子有限公司 一种具有高分断能力的电涌保护装置
CN210490462U (zh) * 2019-09-29 2020-05-08 厦门赛尔特电子有限公司 一种具有高分断能力的电涌保护装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6040971A (en) * 1998-06-08 2000-03-21 Martenson; Kenneth R. Circuit protection device
DE102009030629A1 (de) * 2009-06-25 2010-12-30 Phoenix Contact Gmbh & Co. Kg Überspannungsschutzelement
FR2958787B1 (fr) * 2010-04-09 2012-05-11 Abb France Dispositif de protection contre les surtensions a deconnecteurs thermiques dedoubles
DE202011110468U1 (de) * 2011-02-18 2014-03-07 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzeinrichtung, umfassend mindestens einen Überspannungsableiter
CN103296670A (zh) * 2012-03-02 2013-09-11 广东电网公司清远供电局 一种电力系统中用的直流电源防雷器
DE102013019391B4 (de) * 2013-04-11 2022-04-28 Dehn Se Anordnung zum Überlastschutz von Überspannungsschutzgeräten
CN203967740U (zh) * 2014-02-24 2014-11-26 贵阳高新益舸电子有限公司 可确保热脱离机构动作的新型浪涌保护器
DE202014002496U1 (de) * 2014-03-20 2014-04-17 Dehn + Söhne Gmbh + Co. Kg Überspannungsschutzeinrichtung, umfassend mindestens einen Überspannungsableiter und eine dem Überspannungsableiter parallel geschaltete, thermisch auslösbare, federvorgespannte Kurzschliessschalteinrichtung
CN203839326U (zh) * 2014-05-07 2014-09-17 厦门赛尔特电子有限公司 一种高压直流温度保险丝
CN208174263U (zh) * 2018-04-23 2018-11-30 厦门赛尔特电子有限公司 一种新型的热保护型压敏电阻

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5321574A (en) * 1992-01-17 1994-06-14 Siemens Energy & Automation, Inc. Circuit breaker/surge arrestor package in which the arrestor uses an MOV that is thermally de-coupled from the breaker's thermal trip circuit
CN101692393A (zh) * 2009-09-11 2010-04-07 辽宁金立电力电器有限公司 有载调节20kv及以下电网中调容变压器的开关
CN107424881A (zh) * 2017-09-18 2017-12-01 广西新全通电子技术有限公司 一种快速分断的电涌保护器及其应用
CN107516885A (zh) * 2017-09-18 2017-12-26 广西新全通电子技术有限公司 一种双分离的防弧型电涌保护装置及其应用
CN209434871U (zh) * 2019-01-29 2019-09-24 厦门赛尔特电子有限公司 一种浪涌保护器
CN110492463A (zh) * 2019-09-29 2019-11-22 厦门赛尔特电子有限公司 一种具有高分断能力的电涌保护装置
CN210490462U (zh) * 2019-09-29 2020-05-08 厦门赛尔特电子有限公司 一种具有高分断能力的电涌保护装置

Also Published As

Publication number Publication date
US11742656B2 (en) 2023-08-29
CN110492463A (zh) 2019-11-22
US20220360071A1 (en) 2022-11-10
EP3972068A1 (en) 2022-03-23
EP3972068A4 (en) 2022-09-14
EP3972068B1 (en) 2023-10-04

Similar Documents

Publication Publication Date Title
US9754707B2 (en) Overvoltage protection device
US8816812B2 (en) Varistor fuse element
US20160035529A1 (en) Combined surge protection device with integrated spark gap
WO2021057163A1 (zh) 一种具有高分断能力的电涌保护装置
JP5959447B2 (ja) サージ防護装置
WO2019205864A1 (zh) 一种新型的热保护型压敏电阻
CN103262375A (zh) 包括至少一个变阻器放电元件的过压防护放电装置
JP5959007B2 (ja) サージ防護装置
EP1747563A1 (en) Liquid immersed surge arrester
CN108376632B (zh) 一种自触发快速的分断器及其触发方法
US20240087831A1 (en) Fused electrical protection assemblies and surge protective devices
CN210490462U (zh) 一种具有高分断能力的电涌保护装置
CN110350501B (zh) 三相电涌保护装置
CN106887822B (zh) 一种过压保护装置
CN206164089U (zh) 一种具有高性能防弧罩灭弧的电涌保护装置
US20230318282A1 (en) Chargeless interrupter device for surge arrester
CN219106059U (zh) 脱扣装置和过压过流保护器件
CN211908359U (zh) 一种板载三相电涌保护器
CN107424881A (zh) 一种快速分断的电涌保护器及其应用
EP4339989A1 (en) Electrical protection assemblies and surge protective devices
JPS5882439A (ja) 通信用保安器
CN107611953A (zh) 一种快速分断防弧及灭弧型电涌保护装置
JPS61237317A (ja) 負荷時タツプ切換器
CN107516886A (zh) 一种快速分断防弧及灭弧型电涌保护装置及其应用
Wilkins et al. Protection of TVSS Systems

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20869674

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2020869674

Country of ref document: EP

Effective date: 20211217

NENP Non-entry into the national phase

Ref country code: DE