CN204695887U - A kind of Thermal protection piezo-resistance and composition element thereof - Google Patents
A kind of Thermal protection piezo-resistance and composition element thereof Download PDFInfo
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- CN204695887U CN204695887U CN201520376567.9U CN201520376567U CN204695887U CN 204695887 U CN204695887 U CN 204695887U CN 201520376567 U CN201520376567 U CN 201520376567U CN 204695887 U CN204695887 U CN 204695887U
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Abstract
The utility model discloses a kind of Thermal protection piezo-resistance and composition element thereof, this Thermal protection piezo-resistance comprises piezo-resistance MOV, alloy-type temperature fuse TCO, auxiliary heat conduction path and outer electrode.This auxiliary heat conduction path is made up of insulating heat-conductive parts and auxiliary heat conduction electrode.The heat that piezo-resistance can produce when exception by this Thermal protection piezo-resistance is more effectively delivered on two pins of Thermal Cutoffs; effectively improve the utilance of the heat that piezo-resistance produces; thus time when shortening piezo-resistance abnormal heating needed for Thermal Cutoffs open circuit; improve the validity of Thermal Cutoffs heat protection function, improve the safety in utilization of piezo-resistance.
Description
Technical field
The utility model relates to a kind of Surge Protector, particularly a kind of Thermal protection piezo-resistance and composition element thereof.
Background technology
Piezo-resistance is widely used in low-voltage distribution system as the surge protective device that cost performance is the highest.But, because piezo-resistance belongs to semiconductor device, in use, along with the consumption of own resource, certainly exist deterioration failure, the leakage current flowing through piezo-resistance can increase, and the electric current flowing through piezo-resistance can make piezo-resistance generate heat, when the accumulation of heat in piezo-resistance can make piezo-resistance body temperature rise, along with the rising of temperature, leakage current can increase further, forms vicious circle, finally cause piezo-resistance melting to puncture, form electric short circuit.
The generation of this situation can be avoided by the mode increasing thermel protection device (such as fuse) for piezo-resistance.Have the Thermal protection piezo-resistance of thermel protection device, the heat utilizing piezo-resistance to produce when deterioration makes thermel protection device action, piezo-resistance is departed from from circuit, effectively can reduce the electric short circuit probability of happening that pressure responsive resistor failure causes.
Conventional method protects the superheating phenomenon that piezo-resistance occurs in slow deterioration process by be welded on by the pin of Thermal Cutoffs (TCO) on piezo-resistance (MOV) electrode and to be enclosed in cavity volume; particularly, receive after piezo-resistance and Thermal Cutoffs being connected between the different circuits in distribution system.Piezo-resistance has obvious nonlinear characteristic, the amplitude of can release surge current and over-voltage, reaches the object of protection power consumption equipment; Thermal Cutoffs has the characteristic disconnected when specified temp, when ambient temperature does not reach its operating temperature, this Thermal Cutoffs is good conductor, when ambient temperature meets or exceeds its operating temperature, Thermal Cutoffs becomes open-circuit condition, this piezo-resistance is departed from from circuit.
But improve along with to the study plot of security requirement in pressure responsive resistor failure process and improve the short circuit current withstand requirements of larger grade, the method performance when piezo-resistance bears temporary overvoltage shows slightly not enough.And the rated function temperature of Thermal Cutoffs is selected usually at 125-135 DEG C, the upper limit working temperature of the serviceability temperature of Thermal protection piezo-resistance only has 85 DEG C.When being used in the higher equipment of ambient temperature, such as, in communication equipment time, the useful life of Thermal protection piezo-resistance can shorten.
Patent ZL201420306127.1 " novel Thermal protection piezo-resistance and Surge Protector " discloses a kind of Thermal protection piezo-resistance; wherein the second metal electrode of piezo-resistance and the first electrode of Thermal Cutoffs are same electrode; thus shorten heat conduction path; improve heat trnasfer, improve the fail safe of Thermal protection piezo-resistance and the reliability of Thermal protection.But, due between the second electrode of Thermal Cutoffs and piezo-resistance without any heat trnasfer path, the heat produced during piezo-resistance deterioration is not fully used.
Utility model content
In order to the heat produced when more effectively utilizing piezo-resistance abnormal heating, time during shortening piezo-resistance abnormal heating needed for Thermal Cutoffs open circuit, improve the validity of Thermal Cutoffs heat protection function, improve the safety in utilization of piezo-resistance; And by improving the utilization that Thermal Cutoffs generates heat to piezo-resistance, improving the rated function temperature of Thermal Cutoffs, reaching the object improving SC service ceiling temperature.The utility model provides a kind of novel Thermal protection piezo-resistance, and it comprises piezo-resistance, alloy-type temperature fuse, auxiliary heat conduction path and outer electrode.
Piezo-resistance comprises piezo-resistance substrate and has a MOV metal electrode, the 2nd MOV metal electrode of energy heat-conductivity conducting, two surfaces of this piezo-resistance substrate are all provided with conductive electrode, one MOV metal electrode and the 2nd MOV metal electrode welds respectively and electricity connects two conductive electrodes, this piezo-resistance adopts insulating material encapsulating;
Alloy-type temperature fuse, comprise a housing, one TCO electrode, 2nd TCO electrode and welding the low-melting alloy silk be connected electrically between a TCO electrode and the 2nd TCO electrode, 2nd MOV metal electrode and a TCO electrode are same electrode, one TCO electrode, 2nd TCO electrode and low-melting alloy silk are all positioned at together with housing, this alloy type Thermal Cutoffs also comprises flux disconnected agent and sealing resin, this B alloy wire is wrapped up in this disconnected agent of fluxing, this sealing resin and this housing form closed containing cavity and fixing TCO electrode, this closed containing cavity accommodates this low-melting alloy silk be wrapped in by this disconnected agent of fluxing,
Auxiliary heat conduction path, comprises insulating heat-conductive parts and auxiliary heat conduction electrode, and this auxiliary heat conduction electrode is by insulating heat-conductive parts and a MOV metal electrode close contact; This auxiliary heat conduction electrode and the 2nd TCO electrode are bulk electrode or by weld or crimping mode is connected, and are formed overall; These insulating heat-conductive parts are made up of the insulating material with high thermal conductivity coefficient, can be aluminium nitride ceramicss, or aluminium oxide ceramics, or silicon nitride, or heat-conducting silicon rubber.
Outer electrode, comprises the first outer electrode and the second outer electrode.This first outer electrode and the 2nd TCO electrode are bulk electrode or by weld or crimping mode is connected, and formed overall, this first outer electrode preferentially adopts crimping mode to be connected with the 2nd TCO electrode, distributes to outer electrode and attached article thereof to reduce heat; This second outer electrode and a MOV electrode are bulk electrode or by weld or crimping mode is connected, and formed overall, this second outer electrode preferably adopts crimping mode to be connected with a MOV electrode, distributes to outer electrode and attached article thereof to reduce heat.
This Thermal protection type piezo-resistance also can comprise the protecting sheathing system with shell and lower cover composition.
The utility model additionally provides a kind of composition element of Thermal protection piezo-resistance; this composition element is formed in parallel by the above-mentioned Thermal protection piezo-resistance of at least two groups; separated by insulating element between piezo-resistance, and have protecting sheathing system, wherein protecting sheathing system comprises shell and lower cover.
The present invention improves the utilization to the heat that electric current in piezo-resistance deterioration process causes piezo-resistance to generate heat effectively, on the one hand, can the rated function temperature of Thermal Cutoffs be brought up between 145 DEG C to 200 DEG C, the upper limit working temperature of the serviceability temperature of Thermal protection piezo-resistance can be brought up to more than 85 DEG C thus, even can reach 125 DEG C, better to protect the communication equipment of internal temperature up to more than 90 DEG C in the communications industry; Second aspect, the present invention can make shorten further the operate time of Thermal Cutoffs, reduces the time that piezo-resistance is in deterioration state, reduces the probability of piezo-resistance puncture short further, reduce the generation of fire risk.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 shows the schematic diagram of Thermal protection piezo-resistance first embodiment.
Fig. 2 shows the schematic diagram of Thermal protection piezo-resistance second embodiment, the 3rd embodiment.
Fig. 3 shows Thermal protection piezo-resistance first embodiment front perspective view.
Fig. 4 shows the rear perspective view of the Thermal protection piezo-resistance shown in Fig. 1.
Fig. 5 shows the assembling schematic diagram of Thermal protection piezo-resistance composition element second embodiment.
Fig. 6 shows the partial exploded view of the Thermal protection piezo-resistance composition element shown in Fig. 3.
Fig. 7 shows the assembling schematic diagram of Thermal protection piezo-resistance composition element the 3rd embodiment.
Fig. 8 shows the partial exploded view of the Thermal protection piezo-resistance composition element shown in Fig. 5.
Embodiment
Hereinafter with reference to the accompanying drawings embodiment is described in detail.
See the schematic diagram shown in Fig. 1 and Fig. 2, Thermal protection piezo-resistance, comprises piezo-resistance 1 and alloy type Thermal Cutoffs 2; This piezo-resistance 1 and this alloy type Thermal Cutoffs 2 are received after connecting between the different circuits in distribution system.This piezo-resistance 1 has obvious nonlinear characteristic, the amplitude of can release surge current and over-voltage, reaches the object of protection power consumption equipment; This alloy type Thermal Cutoffs 2 has the characteristic disconnected when specified temp, when ambient temperature does not reach its operating temperature, this alloy-type temperature fuse 2 is good conductors, when ambient temperature meets or exceeds its operating temperature, this alloy type Thermal Cutoffs 2, become open-circuit condition, this piezo-resistance 1 is departed from from circuit.In the use procedure of this piezo-resistance 1, along with the consumption of own resource, the leakage current flowing through this piezo-resistance 1 can increase, the electric current flowing through this piezo-resistance 1 can be make it generate heat, when the accumulation of heat in this piezo-resistance 1 can make its body temperature rise, along with the rising of temperature, leakage current can increase further, forms vicious circle.When the temperature in this piezo-resistance 1 is delivered on this alloy type Thermal Cutoffs 2, when temperature meets or exceeds the operating temperature of this alloy type Thermal Cutoffs 2, this alloy type Thermal Cutoffs 2, becomes open-circuit condition, this piezo-resistance 1 is departed from from circuit.
Embodiment one: see Fig. 1, Fig. 3 and Fig. 4, this Thermal protection piezo-resistance comprises:
Piezo-resistance 1, comprising piezo-resistance substrate 11 and have can a MOV metal electrode 12, the 2nd MOV metal electrode 13 of heat-conductivity conducting, one MOV metal electrode 12, the 2nd MOV metal electrode 13 usually adopt to be had certain thickness non-ferrous metal and makes, and such as copper, copper alloy, aluminum or aluminum alloy, also can be coated with the electrode etc. that (plating, sintering) has certain thickness (being usually greater than 0.1mm) metal material on the insulating material.Like this, these metal electrodes are the good conductor of heat, also be the good conductor of electricity, two surfaces of this piezo-resistance substrate are all provided with conductive electrode 14, one MOV metal electrode 12 and the 2nd MOV metal electrode 13 weld respectively and are electrically connected two conductive electrodes 14, and this piezo-resistance adopts insulating material encapsulating;
Alloy type Thermal Cutoffs 2, comprise housing 21, a TCO electrode 24, the 2nd TCO electrode 22 and low-melting alloy silk 23, wherein this low-melting alloy wire bond is connected between a TCO electrode 24 and the 2nd TCO electrode 22,2nd MOV metal electrode 13 and a TCO electrode 24 are integrated electrode, this low-melting alloy silk 23 is electrically connected the 2nd MOV metal electrode 13 of this piezo-resistance unit 1, there are not other and be connected between the 2nd MOV metal electrode 13 of this low-melting alloy silk 23 and this piezo-resistance unit;
One TCO electrode 24, the 2nd TCO electrode 22 and low-melting alloy silk 23 are connected by this housing, this alloy type Thermal Cutoffs 2 also comprises flux disconnected agent and sealing resin, this B alloy wire is wrapped up in this disconnected agent of fluxing, this fluxes disconnected agent when this low-melting alloy silk 23 one-tenth molten condition, reduce interfacial tension between the two, thus improve the surface tension of molten alloy, make molten alloy rapid desufflation, arrive the object disconnected, this disconnected agent of fluxing is organic substance.This sealing resin and this housing form closed containing cavity and fixing TCO electrode, and this closed containing cavity accommodates this low-melting alloy silk be wrapped in by this disconnected agent of fluxing;
Auxiliary heat conduction path 3, comprise insulating heat-conductive parts 31 and auxiliary heat conduction electrode 32, these insulating heat-conductive parts 31 are that the complex of heat-conducting silicon rubber or silicon nitride ceramics or aluminium oxide ceramics or heat-conduction epoxy resin etc. or two kinds and above previous materials is made, closely be enclosed within auxiliary heat conduction electrode 32, this auxiliary heat conduction electrode 32 and the 2nd TCO electrode 22 are same bulk electrode; The epitaxial part 121 of a MOV metal electrode 12 is close in this insulating heat-conductive parts 31 outside;
Outer electrode 4, comprise the first outer electrode 41 and the second outer electrode 42, this first outer electrode 41 welds with the 2nd TCO electrode 22, forms electric pathway; Second outer electrode 42 welds with the epitaxial part 121 of a MOV metal electrode 12, forms electric pathway.
Embodiment two: see Fig. 2, Fig. 5 and Fig. 6; a composition element for Novel hot protection piezo-resistance, comprising: Thermal protection piezo-resistance assembly A in parallel and Thermal protection piezo-resistance assembly B, auxiliary heat conduction path 3, outer electrode 4 and protecting sheathing system 5 and insulating pad 53.
Thermal protection piezo-resistance assembly A comprises:
Piezo-resistance A-1, comprising piezo-resistance substrate A-11 and have can a MOV metal electrode A-12, the 2nd MOV metal electrode A-13 of heat-conductivity conducting, one MOV metal electrode 12, the 2nd MOV metal electrode 13 usually adopt to be had certain thickness non-ferrous metal and makes, and such as copper, copper alloy, aluminum or aluminum alloy, also can be coated with the electrode etc. that (plating, sintering) has certain thickness (being usually greater than 0.1mm) metal material on the insulating material.Like this, these metal electrodes and be heat good conductor, be also electricity good conductor.Two surfaces of this piezo-resistance substrate are all provided with conductive electrode A-14, a MOV metal electrode A-12 and the 2nd MOV metal electrode A-13 welds respectively and electricity meets two conductive electrode A-14; This piezo-resistance A-1 adopts insulating material encapsulating;
Alloy type Thermal Cutoffs A-2, the low-melting alloy silk A-23 comprising housing A-21, a TCO electrode A-24, the 2nd TCO electrode A-22 and be welded in a TCO electrode A-24 and the 2nd TCO electrode A-22,2nd MOV metal electrode A-13 and a TCO electrode A-24 are same bulk electrode, being electrically connected with this B alloy wire A-23, there are not other with this B alloy wire A-23 and is connected in the 2nd MOV metal electrode A-13;
The 2nd MOV metal electrode A-13 of this piezo-resistance unit A-1, a TCO electrode A-24, the 2nd TCO electrode A-22 and low-melting alloy silk A-23 are connected by this housing respectively.This alloy type Thermal Cutoffs A-2 also comprises flux disconnected agent and sealing resin, this B alloy wire is wrapped up in this disconnected agent of fluxing, this sealing resin and this housing form closed containing cavity and fixing TCO electrode, and this closed containing cavity accommodates this low-melting alloy silk be wrapped in by this disconnected agent of fluxing.
Thermal protection piezo-resistance assembly B, comprising:
Piezo-resistance B-1, comprising piezo-resistance substrate B-11 and have can a MOV metal electrode B-12, the 2nd MOV metal electrode B-13 of heat-conductivity conducting, two surfaces of this piezo-resistance substrate are all provided with conductive electrode B-14, a MOV metal electrode B-12 and the 2nd MOV metal electrode B-13 welds respectively and electricity meets two conductive electrode B-14; This piezo-resistance B-1 adopts insulating material encapsulating;
Alloy type Thermal Cutoffs B-2, the low-melting alloy silk B-23 comprising a housing B-21, a TCO electrode B-24, the 2nd TCO electrode B-22 and be welded in a TCO electrode B-24 and the 2nd TCO electrode B-22,2nd MOV metal electrode B-13 and a TCO electrode B-24 are same bulk electrode, this B alloy wire B-23 is directly electrically connected the 2nd MOV metal electrode B-13 of this piezo-resistance unit B-1, and a TCO electrode B-24, the 2nd TCO electrode B-22 and low-melting alloy silk B-23 are connected by this housing respectively.This alloy type Thermal Cutoffs B-2 also comprises flux disconnected agent and sealing resin, this B alloy wire is wrapped up in this disconnected agent of fluxing, this sealing resin and this housing form closed containing cavity and fixing TCO electrode, and this closed containing cavity accommodates this low-melting alloy silk be wrapped in by this disconnected agent of fluxing.
Auxiliary heat conduction path 3, comprise insulating heat-conductive parts 31 and auxiliary heat conduction electrode 32, these insulating heat-conductive parts 31 are that the complex of heat-conducting silicon rubber or silicon nitride ceramics or aluminium oxide ceramics or heat-conduction epoxy resin etc. or two kinds and above previous materials is made, these insulating heat-conductive parts 31 are closely enclosed within auxiliary heat conduction electrode 32, and the 2nd TCO electrode A-22 of this auxiliary heat conduction electrode and this assembly A and the 2nd TCO electrode B-22 of this assembly B are same bulk electrode; These insulating heat-conductive parts 31 both sides are close to a MOV metal electrode A-12 of this assembly A and MOV metal electrode B-12 of this assembly B respectively;
Outer electrode 4, comprises the first outer electrode 41 and the second outer electrode 42, and this first outer electrode 41 welds with the 2nd TCO electrode A-22 of this assembly A and the 2nd TCO electrode B-22 of this assembly B, forms electric pathway; Second outer electrode 42 welds with a MOV metal electrode A-12 of this assembly A and a MOV metal electrode B-12 of this assembly B, forms electric pathway.
Protecting sheathing system 5,
Comprise lower cover 51, shell 52, this first outer electrode 41 and this second outer electrode 42 are through this lower cover 52; This shell 52 and this lower cover 51 clamping, load Thermal protection piezo-resistance A, B wherein.
Insulating pad 53, this insulating pad 53 between a MOV metal electrode A-12 and a MOV metal electrode B-12 of assembly B of assembly A, and loads in the chamber be made up of shell 52 and lower cover 51 together with Thermal protection piezo-resistance.
Embodiment three: see Fig. 2, Fig. 7 and Fig. 8, a kind of composition element of Novel hot protection piezo-resistance, comprises Thermal protection piezo-resistance assembly A in parallel and Thermal protection piezo-resistance assembly B, auxiliary heat conduction path 3, outer electrode 4 and protecting sheathing system 5.
Wherein Thermal protection piezo-resistance assembly A, comprising:
Piezo-resistance A-1, alloy type Thermal Cutoffs A-2; Wherein piezo-resistance A-1, comprising piezo-resistance substrate A-11 and have can a MOV metal electrode A-12, the 2nd MOV metal electrode A-13 of heat-conductivity conducting, two surfaces of this piezo-resistance substrate are all provided with conductive electrode A-14, and a MOV metal electrode A-12 and the 2nd MOV metal electrode A-13 welds respectively and is electrically connected two conductive electrode A-14; This piezo-resistance A-1 adopts insulating material encapsulating;
Alloy type Thermal Cutoffs A-2, the low-melting alloy silk A-23 comprising a housing A-21, a TCO electrode A-24, the 2nd TCO electrode A-22 and be welded in a TCO electrode A-24 and the 2nd TCO electrode A-22,2nd MOV metal electrode A-13 and a TCO electrode A-24 are same bulk electrode, this B alloy wire A-23 is directly electrically connected the 2nd MOV metal electrode A-13 of this piezo-resistance unit A-1, and a TCO electrode A-24, the 2nd TCO electrode A-22 and low-melting alloy silk A-23 are connected by this housing.This alloy type Thermal Cutoffs A-2 also comprises flux disconnected agent and sealing resin, this B alloy wire is wrapped up in this disconnected agent of fluxing, this sealing resin and this housing form closed containing cavity and fixing TCO electrode, and this closed containing cavity accommodates this low-melting alloy silk be wrapped in by this disconnected agent of fluxing.
Wherein Thermal protection piezo-resistance assembly B, comprises piezo-resistance B-1, alloy type Thermal Cutoffs B-2; Wherein piezo-resistance B-1, comprising piezo-resistance substrate B-11 and have can a MOV metal electrode B-12, the 2nd MOV metal electrode B-13 of heat-conductivity conducting, two surfaces of this piezo-resistance substrate are all provided with conductive electrode B-14, a MOV metal electrode B-12 and the 2nd MOV metal electrode B-13 welds respectively and electricity meets two conductive electrode B-14; This piezo-resistance B-1 adopts insulating material encapsulating.
Alloy type Thermal Cutoffs B-2, the low-melting alloy silk B-23 comprising a housing B-21, a TCO electrode B-24, the 2nd TCO electrode B-22 and be welded in a TCO electrode B-24 and the 2nd TCO electrode B-22,2nd MOV metal electrode B-13 and a TCO electrode B-24 are same bulk electrode, this B alloy wire B-23 is directly electrically connected the 2nd MOV metal electrode B-13 of this piezo-resistance unit B-1, and a TCO electrode B-24, the 2nd TCO electrode B-22 and low-melting alloy silk B-23 are connected by this housing.This alloy type Thermal Cutoffs B-2 also comprises flux disconnected agent and sealing resin, this B alloy wire is wrapped up in this disconnected agent of fluxing, this sealing resin and this housing form closed containing cavity and fixing TCO electrode, and this closed containing cavity accommodates this low-melting alloy silk be wrapped in by this disconnected agent of fluxing;
Auxiliary heat conduction path 3, comprise two groups of insulating heat-conductive components A-31, insulating heat-conductive part B-31 and auxiliary heat conduction electrode 32, this insulating heat-conductive components A-31 and B-31 are or the complex of silicon nitride ceramics or aluminium oxide ceramics or heat-conduction epoxy resin etc. or two kinds and above previous materials is made, closely be pressed on auxiliary heat conduction electrode 32, this auxiliary heat conduction electrode 32 is form good electric pathway and heat passage by welding with the 2nd TCO electrode A-22 of this assembly A and the 2nd TCO electrode B-22 of this assembly B; The 2nd MOV metal electrode A-13 of this insulating heat-conductive components A-31 opposite side and this assembly A is close to, and the 2nd MOV metal electrode B-13 of this insulating heat-conductive part B-31 opposite side and this assembly B is close to.
Outer electrode 4, comprises the first outer electrode 41 and the second outer electrode 42, and this first outer electrode 41 and this auxiliary heat conduction electrode 32, form electric pathway; Second outer electrode 42 welds with a MOV metal electrode A-12 of this assembly A and a MOV metal electrode B-12 of this assembly B, forms electric pathway.
Protecting sheathing system 5, comprises shell 51 and lower cover 52.This first outer electrode 41 and this second outer electrode 42 are through this lower cover 52; This shell 51 and this lower cover 52 clamping, load this assembly A and assembly B wherein.
Should be appreciated that above-described embodiment of the present utility model is only for the utility model example is clearly described, and be not the restriction to execution mode of the present utility model.For the those of ordinary skill in described field, can also make other changes in different forms on the basis of the above description.Here cannot give exhaustive to all execution modes.Every belong to the technical solution of the utility model the apparent change of amplifying out or change the row being still in protection range of the present utility model.
Claims (8)
1. a Thermal protection piezo-resistance, is characterized in that, described Thermal protection piezo-resistance comprises:
Piezo-resistance MOV, described piezo-resistance comprises piezo-resistance substrate, a MOV metal electrode and the 2nd MOV metal electrode, first conductive electrode and the second conductive electrode, described first conductive electrode and the second conductive electrode lay respectively on two surfaces of piezo-resistance substrate, a described MOV metal electrode and the 2nd MOV metal electrode weld respectively and are electrically connected to described first conductive electrode and the second conductive electrode, and described piezo-resistance adopts insulating material encapsulating;
Alloy-type temperature fuse TCO, described alloy-type temperature fuse comprises housing, one TCO electrode, 2nd TCO electrode and low-melting alloy silk, described low-melting alloy wire bond connects and is connected electrically between a described TCO electrode and the 2nd TCO electrode, described 2nd MOV metal electrode and a described TCO electrode are integrated electrode, a described TCO electrode, 2nd TCO electrode and low-melting alloy silk are connected by described housing, this alloy type Thermal Cutoffs also comprises flux disconnected agent and sealing resin, this B alloy wire is wrapped up in this disconnected agent of fluxing, this sealing resin and this housing form closed containing cavity and fixing TCO electrode, this closed containing cavity accommodates this low-melting alloy silk be wrapped in by this disconnected agent of fluxing,
Auxiliary heat conduction path, described auxiliary heat conduction path comprises insulating heat-conductive parts and auxiliary heat conduction electrode, described auxiliary heat conduction electrode is by described insulating heat-conductive parts and a MOV metal electrode close contact, and described auxiliary heat conduction electrode and the 2nd TCO electrode are integrated electrode or by weld or crimping mode is connected; And
Outer electrode, described outer electrode comprises the first outer electrode and the second outer electrode, described first outer electrode and the 2nd TCO Electrode connection, and described second outer electrode is connected with a described MOV metal electrode.
2. Thermal protection piezo-resistance according to claim 1, is characterized in that: described insulating heat-conductive parts are made up of the insulating material with high thermal conductivity coefficient.
3. Thermal protection piezo-resistance according to claim 1, is characterized in that: described first outer electrode and the 2nd TCO electrode are bulk electrode, or by weld or crimping mode is connected to form entirety.
4. Thermal protection piezo-resistance according to claim 1, is characterized in that: described second outer electrode and a MOV electrode are bulk electrode, or by weld or crimping mode is connected to form entirety.
5. Thermal protection piezo-resistance according to claim 1, is characterized in that, described Thermal protection piezo-resistance also comprises protecting sheathing system, and described shell protection system comprises shell and lower cover.
6. a Thermal protection piezo-resistance composition element, is characterized in that: this composition element comprises at least two Thermal protection piezo-resistances according to claim 1, and described at least two Thermal protection piezo-resistances are in parallel.
7. composition element according to claim 6, is characterized in that, is separated between described at least two Thermal protection piezo-resistances according to claim 1 by insulating element.
8. composition element according to claim 6, is characterized in that, described composition element also comprises protecting sheathing system, and described shell protection system comprises shell and lower cover.
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| CN201520376567.9U CN204695887U (en) | 2015-06-03 | 2015-06-03 | A kind of Thermal protection piezo-resistance and composition element thereof |
| PCT/CN2015/081185 WO2015188752A1 (en) | 2014-06-10 | 2015-06-10 | Novel thermal-protection metal-oxide varistor and surge protector |
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| CN201520376567.9U CN204695887U (en) | 2015-06-03 | 2015-06-03 | A kind of Thermal protection piezo-resistance and composition element thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054727A (en) * | 2017-12-28 | 2018-05-18 | 广东立信防雷科技有限公司 | A kind of surge protector and its manufacturing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054727A (en) * | 2017-12-28 | 2018-05-18 | 广东立信防雷科技有限公司 | A kind of surge protector and its manufacturing method |
| CN108054727B (en) * | 2017-12-28 | 2024-03-22 | 广东立信防雷科技有限公司 | Surge protector and manufacturing method thereof |
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