CN201733089U - Surge protector - Google Patents
Surge protector Download PDFInfo
- Publication number
- CN201733089U CN201733089U CN2010202812222U CN201020281222U CN201733089U CN 201733089 U CN201733089 U CN 201733089U CN 2010202812222 U CN2010202812222 U CN 2010202812222U CN 201020281222 U CN201020281222 U CN 201020281222U CN 201733089 U CN201733089 U CN 201733089U
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- electrode
- surge protector
- resistance
- piezo
- module
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Abstract
A surge protector comprises a module and a base. The module includes a piezoresistor arranged inside a casing, a first end of the piezoresistor is directly connected with a first electrode, a second end of the piezoresistor is directly connected with a second electrode via a hot fuse separator, and the module is electrically connected with the base via the first electrode and the second electrode. The surge protector is simple in structure as the piezoresistor in the module is directly connected with the second electrode via the hot fuse separator, omits middle process of temperature transmission of a traditional product, can timely fuse and reliably separate the piezoresistor to protect the circuit and the equipment when the piezoresistor is degraded or in short circuit and fault current occurs in a line, and simultaneously effectively avoids spontaneous combustion, explosion and the like.
Description
Technical field
The utility model relates to a kind of surge protector, specifically is a kind of surge protector that has special break-up device.
Background technology
Notification number be CN2615851Y patent disclosure a kind of isolated hot deprotection surge protector; it comprises temperature control solder joint, insulate fire-retardant division board and surge protector chip automatically; a wherein terminal of temperature controller contact one end and protected circuit links; a pole piece of the other end and surge protector chip links, and another pole piece of surge protector chip and another terminal or the earth connection of protected circuit link.Temperature control contact and automatically the fire-retardant division board of insulation be in one independently in the cavity volume, the fire-retardant division board that insulate automatically is arranged on by the temperature control contact.Automatically be provided with the elastomeric element of isolated temperature control contact automatically on the fire-retardant division board of insulation.When the surge protector chip failure; the heat energy of its generation is transmitted on the temperature control contact by the metal pole piece that is connected with temperature control contact; when the temperature of accumulation reaches the operating value of temperature contact; the contact of temperature control contact separately; simultaneously; automatically the fire-retardant division board of insulation is implemented reliable electrical isolation in separating of insertion temperature control contact under the effect of flexible member between the contact; the difficult problem of scolding tin adhesion and electric arc afterflow reaches reliable isolation breaking current purpose when stopping temperature control contact and separating contact.The heat that surge protector chip in the above-mentioned patent produces is transmitted on the temperature control contact via the metal pole piece, and temperature is controlled the fusing of contact contact and disconnected, and temperature needs to conduct earlier to realize disjunction in this process, and disjunction is not prompt enough.When thunderbolt or chip deterioration, the temperature rise of surge protector chip is a process that adds up, and this process duration long enough sufficient temp control contact is made corresponding fusing; But when the surge protector chip damages with the short circuit form; perhaps when breaking down electric current in the circuit; electric current by the surge protector chip can reach tens even the hundreds of ampere; and the transient current when being struck by lightning relatively; the duration of short circuit and fault current is longer; temperature rise under this rapid effect be one rapid; instantaneous process; temperature control contact has little time to make corresponding disjunction action by heat conduction; when break-up device does not also have disjunction; the surge protector chip has been the short circuit distress condition; at this moment, the surge protector chip will be blasted; problems such as burning.Surge protector in the above-mentioned application is because exist the temperature transfer process; make the disjunction action need the certain reaction time; when the surge protector chip broke down electric current with damage of short circuit form or circuit, there were problems such as blast, burning in above-mentioned surge protector.
Notification number is to disclose a kind of surge protector in the patent of CN201266524.Y; it includes shell; first electrode; second electrode; between first electrode and second electrode, be provided with piezo-resistance; elastic spring; fix first electrode and second electrode in the enclosure; two pins of piezo-resistance weld second electrode and elastic spring respectively; one end of elastic spring and the riveted joint of first electrode; the other end of elastic spring is welded on the pin of piezo-resistance; when surge protector is struck by lightning or overvoltage when the aging of product was lost efficacy; piezo-resistance will be generated heat; make the low temperature solder joint between piezo-resistance and the elastic spring melt; thereby piezo-resistance and elastic spring disconnect, and then make surge protector break away from power supply.Above-mentioned patent is the same with first patent; because the temperature of surge protector all has a process of transmitting accumulation just can finish disjunction control; its disjunction action needs the certain reaction time; when circuit breaks down electric current; perhaps when the surge protector chip damages with the short circuit form; transient current when being struck by lightning relatively; the duration of short circuit and fault current is longer; temperature rise under this rapid effect be one rapid; instantaneous process; temperature control contact can not be made corresponding action by heat conduction; when break-up device does not also have disjunction; the surge protector chip has been the short circuit distress condition; at this moment, the surge protector chip will be blasted; problems such as burning are used safety inadequately.The easy damage of surge protector self, but fire hazard also cause damage etc.
The utility model content
For this reason; to be solved in the utility model is that the temperature of surge protector of the prior art needs a transmittance process be delivered to the disjunction control device; the disjunction action needs the certain reaction time; and then make surge protector when circuit breaks down electric current; perhaps when the surge protector chip damages with the short circuit form, burn easily, explode; use unsafe technical problem; provide a kind of when circuit breaks down electric current, perhaps can be safe when the surge protector chip damages with the short circuit form and the surge protector of timely disjunction.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is as follows:
A kind of surge protector; comprise module and base; described module comprises the piezo-resistance that is arranged on enclosure interior; first end and first electrode of described piezo-resistance directly link; second end and second electrode of described piezo-resistance directly link by the thermal cut separator, and described module is electrically connected with described base by described first electrode and described second electrode.
Also comprise insulated isolated device, with after thermal cut separator fusing between described second electrode separates, described insulated isolated device is isolated described piezo-resistance and described second electrode at second end of described piezo-resistance.
Described insulated isolated device comprises insulation a fire-retardant division board and an elastomeric element that is connected with the fire-retardant division board of described insulation; the other end of described elastomeric element is fixed on the module housing of described surge protector; when the fire-retardant division board of described insulation separates with described second electrode fusing in described piezo-resistance, insert between described piezo-resistance and described second electrode.
Described elastomeric element is a spring.
Described insulated isolated device is an elastomeric element that is connected with described second electrode, when described piezo-resistance is separated with described second electrode fusing, imposes on power that trends towards away from described piezo-resistance of described second electrode.
Described thermal cut separator is the low temperature weld tabs.
Technique scheme of the present utility model has the following advantages compared to existing technology:
Piezo-resistance directly is connected by the thermal cut separator with second electrode in the module of surge protector of the present utility model, simple in structure, saved the pilot process of temperature transfer, when circuit breaks down electric current, perhaps when the surge protector chip damages with the short circuit form, the separation that can both in time fuse, protective circuit and device security; Simultaneously, prevent accidents such as surge protector burns, blast.
Surge protector in the utility model also comprises insulated isolated device; after described piezo-resistance and the disconnection of described second electrode; described insulated isolated device further safety is isolated the described piezo-resistance and second electrode; have good arc extinguishing ability, thoroughly solved thermal cut separator fusing contingent scolding tin adhesion problems in back and electric arc afterflow problem.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the part-structure schematic diagram of an embodiment surge protector of the utility model module.
Reference numeral is expressed as among the figure: 1-first electrode, 2-second electrode, 3-piezo-resistance, the 4-fire-retardant division board that insulate, 5-spring, 6-scolding tin, 7-housing.
Embodiment
Surge protector of the present utility model comprises module and base, and described module is connected by connected mode of the prior art with described base.Referring to shown in Figure 1, the part-structure schematic diagram of the described module of an embodiment of the utility model, it comprises the piezo-resistance 3 in the housing 7 that is arranged on described module, described piezo-resistance 3 constitutes the chip of described surge protector, first end of described piezo-resistance 3 and first electrode 1 directly link, and some stretches out described first electrode 1 outside the described housing 7; Second end of described piezo-resistance 3 links by the scolding tin 6 and second electrode 2, and described second electrode, 2 parts are stretched out outside the described housing 7.Be provided with the fire-retardant division board 4 of insulation in described piezo-resistance 3 and described second electrode 2 junctions, one end of a spring 5 links to each other with the fire-retardant division board 4 of described insulation, the other end is fixed on the housing, and described spring 5 imposes on 4 one power to described scolding tin 6 motions of the fire-retardant dividing plate of described insulation.Described module is stretched out described housing 7 outer parts by described first electrode 1 and described second electrode 2 and is electrically connected with described base.
The course of work of described surge protector is as follows: under the normal condition; line voltage distribution is applied to the product two ends; described piezo-resistance 3 between described first electrode 1 and described second electrode 2 is in high-impedance state, has only the electric current of microampere order to pass through between two electrodes, and can be considered does not have electric current to flow through.When Lightning Over-voltage or switching overvoltage generation, described piezo-resistance 3 can be the low-resistance conducting state in nanosecond in the time, with the overcurrent bleed off.After having served as loss of voltage, described piezo-resistance 3 is replied its high-impedance state again.As long as overvoltage is in surge protector design protection value scope; (full name is its heat accumulative total: International Electrotechnical Commission by IEC; International Electrotechnical Commission) and the GB continuous item require can not to surpass 120 ℃, described scolding tin 6 can not melt.When raise unusually overlong time or amplitude of line voltage distribution surpasses surge protector design protection value scope, when just surpassing the ability to bear of described piezo-resistance 3; Again or because of described piezo-resistance 3 long-term works under mal-condition, cause leakage current to increase, at this moment, the temperature of described piezo-resistance 3 can raise, and described scolding tin 6 can be sensed fast and surpass 120 ℃ temperature rise, and quick fuse, described second electrode 2 is separated with described piezo-resistance 3, simultaneously, the fire-retardant dividing plate 4 of described insulation is slipping under the active force of described spring 5 between described second electrode leader 2 and the described piezo-resistance 3, and described piezo-resistance 3 is thoroughly separated with described second electrode 2.Thoroughly solved described scolding tin 6 fusing contingent adhesion problems in back and electric arc afterflow problems, disjunction is more reliable.In addition, described piezo-resistance 3 directly is connected by low temperature scolding tin 6 with second electrode 2, has saved the pilot process of temperature transfer, when circuit breaks down electric current, perhaps when the surge protector chip damages with the short circuit form, the separation that can both in time fuse, the safety of protective circuit and equipment; Simultaneously, effectively prevent accidents such as described piezo-resistance 3 generations are on fire, blast.
As a distortion of the foregoing description, described scolding tin 6 can be other low temperature weld tabs of the prior art and replaces, and described low temperature weld tabs refers to that fusing point is at 130 ℃-140 ℃ weld tabs.Can both realize the purpose of this utility model, be within the protection range of the present utility model.
Above-mentioned low temperature weld tabs also can be other thermal cut separators except that the low temperature weld tabs of the prior art and replaces, as long as described thermal cut separator can be realized the function of described low temperature weld tabs, all belongs to protection range of the present utility model.
As second embodiment of the present utility model, described module comprises the piezo-resistance 3 in the housing that is arranged on described module, first end of described piezo-resistance 3 and first electrode 1 directly link, and second end of described piezo-resistance 3 links by the scolding tin 6 and second electrode 2.Described second electrode 2 is connected with a spring, described spring imposes on 2 one power that trend towards away from described piezo-resistance 6 of described second electrode, after described scolding tin 6 fusings, described second electrode 2 leaves described piezo-resistance 6 certain distances under the effect of described spring, guarantee the safe disjunction of described second electrode 2 and described piezo-resistance 6.Can realize the purpose of this utility model equally.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all execution modes.And conspicuous variation of being extended out thus or change still are among the protection range of the present utility model.
Claims (7)
1. surge protector; comprise module and base; it is characterized in that: described module comprises the piezo-resistance that is arranged on enclosure interior; first end and first electrode of described piezo-resistance directly link; second end and second electrode of described piezo-resistance directly link by the thermal cut separator, and described module is electrically connected with described base by described first electrode and described second electrode.
2. surge protector according to claim 1; it is characterized in that: also comprise insulated isolated device; with after thermal cut separator fusing between described second electrode separates, described insulated isolated device is isolated described piezo-resistance and described second electrode at second end of described piezo-resistance.
3. surge protector according to claim 2; it is characterized in that: described insulated isolated device comprises insulation a fire-retardant division board and an elastomeric element that is connected with the fire-retardant division board of described insulation; the other end of described elastomeric element is fixed on the module housing of described surge protector; when the fire-retardant division board of described insulation separates with described second electrode fusing in described piezo-resistance, insert between described piezo-resistance and described second electrode.
4. surge protector according to claim 3 is characterized in that: described elastomeric element is a spring.
5. surge protector according to claim 2 is characterized in that: described insulated isolated device is an elastomeric element that is connected with described second electrode, and described elastomeric element imposes on power that trends towards away from described piezo-resistance of described second electrode.
6. according to the arbitrary described surge protector of claim 1-5, it is characterized in that: described thermal cut separator is the low temperature weld tabs.
7. surge protector according to claim 6 is characterized in that: described low temperature weld tabs is a low temperature scolding tin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202812222U CN201733089U (en) | 2010-08-04 | 2010-08-04 | Surge protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202812222U CN201733089U (en) | 2010-08-04 | 2010-08-04 | Surge protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201733089U true CN201733089U (en) | 2011-02-02 |
Family
ID=43524245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202812222U Expired - Fee Related CN201733089U (en) | 2010-08-04 | 2010-08-04 | Surge protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201733089U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580001A (en) * | 2012-07-24 | 2014-02-12 | 三星Sdi株式会社 | Current breaking device and battery pack having the same |
| CN106655139A (en) * | 2017-01-23 | 2017-05-10 | 北京乾源风电科技有限公司 | Novel surge protector |
| CN106960709A (en) * | 2017-04-10 | 2017-07-18 | 西安市西无二电子信息集团有限公司 | A kind of surge protector of long life height protection |
| CN107275394A (en) * | 2016-04-08 | 2017-10-20 | 株洲中车时代电气股份有限公司 | A kind of power semiconductor modular and its self-protection method |
| CN107958758A (en) * | 2017-12-19 | 2018-04-24 | 上海盎特电气有限公司 | A kind of fusing piezoresistor certainly |
| WO2019140691A1 (en) * | 2018-01-22 | 2019-07-25 | 上海雷迅防雷技术有限公司 | Externally controllable thermal trip device and method suitable for varistor, and application |
| CN110678941A (en) * | 2017-05-19 | 2020-01-10 | 菲尼克斯电气公司 | Isolating device for piezoresistor |
-
2010
- 2010-08-04 CN CN2010202812222U patent/CN201733089U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103580001A (en) * | 2012-07-24 | 2014-02-12 | 三星Sdi株式会社 | Current breaking device and battery pack having the same |
| CN107275394A (en) * | 2016-04-08 | 2017-10-20 | 株洲中车时代电气股份有限公司 | A kind of power semiconductor modular and its self-protection method |
| CN106655139A (en) * | 2017-01-23 | 2017-05-10 | 北京乾源风电科技有限公司 | Novel surge protector |
| CN106960709A (en) * | 2017-04-10 | 2017-07-18 | 西安市西无二电子信息集团有限公司 | A kind of surge protector of long life height protection |
| CN110678941A (en) * | 2017-05-19 | 2020-01-10 | 菲尼克斯电气公司 | Isolating device for piezoresistor |
| CN107958758A (en) * | 2017-12-19 | 2018-04-24 | 上海盎特电气有限公司 | A kind of fusing piezoresistor certainly |
| WO2019140691A1 (en) * | 2018-01-22 | 2019-07-25 | 上海雷迅防雷技术有限公司 | Externally controllable thermal trip device and method suitable for varistor, and application |
| CN111448625A (en) * | 2018-01-22 | 2020-07-24 | 上海雷迅防雷技术有限公司 | Externally controllable thermal trip device and method suitable for piezoresistor and application |
| US11145442B2 (en) | 2018-01-22 | 2021-10-12 | Shanghai ASP Lighting Protective Technology Co., Ltd. | Externally controlled thermal trip device, method and application for varistors |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110202 Termination date: 20190804 |