CN203722223U - Lightning protection module with current-limiting over-temperature function - Google Patents
Lightning protection module with current-limiting over-temperature function Download PDFInfo
- Publication number
- CN203722223U CN203722223U CN201420020337.4U CN201420020337U CN203722223U CN 203722223 U CN203722223 U CN 203722223U CN 201420020337 U CN201420020337 U CN 201420020337U CN 203722223 U CN203722223 U CN 203722223U
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- China
- Prior art keywords
- resistance
- lightning protection
- protection module
- piezoresistor
- temperature
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- 239000000956 alloy Substances 0.000 claims abstract description 15
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims description 22
- 238000009434 installation Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract 3
- 230000015556 catabolic process Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
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- Thermistors And Varistors (AREA)
Abstract
The utility model provides a lightning protection module with a current-limiting over-temperature function. An existing power supply module is large, which is not convenient to be matched and installed. Simultaneously, when a piezoresistor is used, under the conditions that the size is large, and welding and installation of a circuit board are not convenient, stability of a conventional thermal tripping technology has a certain difference problem. The lightning protection module with the current-limiting over-temperature function comprises the piezoresistor. Two sides of the piezoresistor are tightly contacted with piezoresistor electrodes respectively. The module is characterized in that one side of the piezoresistor electrodes is tightly contacted with a composite component formed by a high power resistor and a low temperature alloy temperature fuse; the composite component is connected to a composite component electrode. By using the module of the utility model, under the condition of overcurrent and heating, connection between the piezoresistor and power supply equipment can be guaranteed to be cut off effectively; failure of the piezoresistor does not cause a damage of the equipment and breakdown of the whole system.
Description
technical field:
The utility model relates to a kind of lightning protection module of crossing temperature function with current limliting, is specifically related to one and is easy to the plane-weldings such as wiring board, and what be convenient to that small space installs crosses the lightning protection module of temperature function with current limliting.
background technology:
Along with the development of electric era, making rapid progress of information technology, the integrated levels such as modern power-supply device and industrial, domestic electric appliance are also more and more higher, and the huge market capacity of China's Telecommunication's power supply industry also makes the application to power-supply device in the industry and protection consider object as emphasis.Simultaneous and following people are to product miniaturization, the growth of security requirement, and its reliability operation has become the topic of people's growing interests.
Along with the integrated level of power supply and relevant device increases, it has fundamentally changed and has gone large and stupid outward appearance more, to small but excellent future development.This makes used relevant components and parts also carry out relevant change.Change gradually a large amount of polycrystal devices that use at present into by the high voltage bearing large-scale device in past, and in the principle of lightning protection, adopt integral module to protect the overall lightning protection being progressively converted to relevant device integrated design.Lightning protection is not re-used as a supporting installation of independent individuality, but the leading portion of considering in the time designing as following equipment protects an important ring.But with regard to the lightning-protection module of existing market circulation, not being the band releasing structure lightning-protection module that volume is difficult to more greatly wiring board welding, is exactly independent piezo-resistance, and it exists long high pressure leakage current to increase aging risk in running.Enable to accomplish being combined with of Thermal Cutoffs and piezo-resistance, can not effectively ensure effectively to fuse in the time that piezo-resistance has leakage current temperature rise, cut off the connection of all the other main circuits, be to have unsafe hidden danger in the time of operation.
summary of the invention:
The purpose of this utility model is when increasing for the integrated level of the relevant devices such as current power supply, and used power module is larger, is not easy to carry out Matching installation.Simultaneously in the time using piezo-resistance; conventional heat dropout technology is larger at volume; be not easy in the situation of wiring board welded and installed; its stability problem that there is some difference simultaneously; the utility model provides a kind of lightning protection module of crossing temperature function with current limliting; ensure can effectively cut off itself and being connected of power-supply device under condition that piezo-resistance heats up at overcurrent, can not cause the damage of equipment or even the collapse of whole system because of the inefficacy of itself.
Above-mentioned object realizes by following technical scheme:
Cross the lightning protection module of temperature function with current limliting; comprise piezo-resistance; the both sides of described piezo-resistance are fitted with respectively piezoresistance electrode; the composition element that is fitted with high-power resistance and low-temperature alloy Thermal Cutoffs composition on piezoresistance electrode described in one side, described composition element connects composition element electrode.
The described lightning protection module of crossing temperature function with current limliting, described composition element and piezo-resistance outer setting have organic gel embedding shell.
The described lightning protection module of crossing temperature function with current limliting, described piezoresistance electrode and composition element electrode have respectively the pin that stretches out described organic gel embedding shell.
The described lightning protection module of crossing temperature function with current limliting, described high-power resistance is selected the resistance of resistance between 5W0.1 Ω～20w1 Ω.
The described lightning protection module of crossing temperature function with current limliting, described low-temperature alloy Thermal Cutoffs is selected 100 DEG C～135 DEG C of temperature ranges, the fuse of current range: 10A～20A.
The described lightning protection module of crossing temperature function with current limliting, described high-power resistance and low-temperature alloy Thermal Cutoffs adopt the mode of combination in series.
Beneficial effect:
The utility model utilize a kind of alloy low temperature fuse be combined with high-power resistance composition an element; be connected in series with piezo-resistance again; and making element be close to piezoresistance electrode surface, entirety adopts organic gel embedding to form a kind of lightning protection module with current limliting excess temperature safeguard function.Its protection principle is exactly that alloy low temperature fuse plays when (100 DEG C～135 DEG C) or electric current excessive (10A～20A) and cuts off being connected of piezo-resistance and main circuit in the time of excess Temperature, protects the normal operation of main circuit.Simultaneously in the case of having less leakage current, be limited by powerful resistance, make its further reduction can flow through the electric current of piezo-resistance, simultaneously in the situation that having lightning overvoltage, high-power resistance and piezo-resistance again can fine combinations, hour can there is high-power resistance to carry out the restriction in advance in early stage, when band overvoltage is excessive, be protected by pressure-sensitive working.The module being used in combination than conventional Temperature protection and piezo-resistance more can, at little electric current, play restriction timely, avoids piezo-resistance to be failure to actuate in the time of lower overvoltage, and makes overvoltage direct effect cause the damage of equipment to rear class equipment.
2, the utility model is than little with the piezo-resistance module volume of releasing structure, and welded and installed is convenient, stable performance.And can in overheat protector, play the effect of current limliting.
3, the cost of the utility model lightning-protection module is low, is beneficial to production.
brief description of the drawings:
Fig. 1 is circuit diagram of the present utility model.
Fig. 2 is structural representation of the present utility model.
In figure: shell 1, piezo-resistance one electrode 2, piezo-resistance 3, high-power resistance and low-temperature alloy Thermal Cutoffs composition element 4, the electrode 5 that piezo-resistance and composition element 4 are shared, the electrode 6 of composition element 4.
embodiment:
As shown in Figure 2: the present embodiment cross the lightning protection module of temperature function with current limliting; comprise piezo-resistance 3; the both sides of described piezo-resistance are fitted with respectively piezoresistance electrode 2 and piezoresistance electrode 5; the composition element 4 that is fitted with high-power resistance and low-temperature alloy Thermal Cutoffs composition on piezoresistance electrode 5 described in one side, described composition element connects composition element electrode 6.
The described lightning protection module of crossing temperature function with current limliting, described composition element and piezo-resistance outer setting have organic gel embedding shell 1.
The described lightning protection module of crossing temperature function with current limliting, described piezoresistance electrode and composition element electrode have respectively the pin that stretches out described organic gel embedding shell.
The described lightning protection module of crossing temperature function with current limliting, described high-power resistance is selected the resistance of resistance between 5W0.1 Ω～20w1 Ω.
The described lightning protection module of crossing temperature function with current limliting, described low-temperature alloy Thermal Cutoffs is selected 100 DEG C～135 DEG C of temperature ranges, the fuse of current range: 10A～20A.
The described lightning protection module of crossing temperature function with current limliting, described high-power resistance and low-temperature alloy Thermal Cutoffs adopt the mode of combination in series.
Specific works process as shown in Figure 1, in the time that lightening pulse arrives, enters from input port, when pulse hour, play metering function by high-power resistance, play preliminary protective action, low temperature fuse is short path principle simultaneously, in the pulse situation that can bear again, overvoltage pulse reaches piezo-resistance, and piezo-resistance is high-impedance state under normal circumstances, in the time having lightning overvoltage pulse to arrive, moment becomes low resistive state, the overvoltage of releasing, thus play the lightning protection effect to equipment.Exported by port finally by crossing the residue low pulse voltage of releasing.
In the time that the quality imperfection of piezo-resistance has leakage current, hour limited by high-power resistance, reduce the leakage current that flows through piezo-resistance, extend its useful life.In the time having larger electric current to pass through, in the time not exceeding the scope of low-temperature alloy fuse, piezo-resistance continues overcurrent heating, temperature raises, be affixed on its surperficial assembly and absorb heat, while reaching the limit of fuse, fuse, cut off contacting of piezo-resistance and main circuit.In the time of the rated current of larger electric current over insurance silk, low-temperature alloy fuse fuses, and cuts off contacting of piezo-resistance and main circuit.So ensureing, on the basis of basic lightning protection function, to have realized again current limliting, excess temperature double effects.
The disclosed technological means of the utility model scheme is not limited only to the disclosed technological means of technique scheme, also comprises by above technical characterictic and is equal to the technical scheme that replacement forms.Unaccomplished matter of the present utility model, belongs to those skilled in the art's common practise.
Claims (6)
1. cross the lightning protection module of temperature function with current limliting for one kind; comprise piezo-resistance; the both sides of described piezo-resistance are fitted with respectively piezoresistance electrode; it is characterized in that: on the piezoresistance electrode described in a side, be fitted with the composition element of high-power resistance and low-temperature alloy Thermal Cutoffs composition, described composition element connects composition element electrode.
2. the lightning protection module of crossing temperature function with current limliting according to claim 1, is characterized in that: described composition element and piezo-resistance outer setting have organic gel embedding shell.
3. the lightning protection module of crossing temperature function with current limliting according to claim 2, is characterized in that: described piezoresistance electrode and composition element electrode have respectively the pin that stretches out described organic gel embedding shell.
4. according to crossing the lightning protection module of temperature function with current limliting described in claim 1 or 2 or 3, it is characterized in that: described high-power resistance is selected the resistance of resistance between 5W0.1 Ω～20w1 Ω.
5. according to crossing the lightning protection module of temperature function with current limliting described in claim 1 or 2 or 3, it is characterized in that: described low-temperature alloy Thermal Cutoffs is selected 100 DEG C～135 DEG C of temperature ranges, the fuse of current range: 10A～20A.
6. according to crossing the lightning protection module of temperature function with current limliting described in claim 1 or 2 or 3, it is characterized in that: described high-power resistance and low-temperature alloy Thermal Cutoffs adopt the mode of combination in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420020337.4U CN203722223U (en) | 2014-01-14 | 2014-01-14 | Lightning protection module with current-limiting over-temperature function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420020337.4U CN203722223U (en) | 2014-01-14 | 2014-01-14 | Lightning protection module with current-limiting over-temperature function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203722223U true CN203722223U (en) | 2014-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420020337.4U Expired - Fee Related CN203722223U (en) | 2014-01-14 | 2014-01-14 | Lightning protection module with current-limiting over-temperature function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203722223U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107565508A (en) * | 2017-10-25 | 2018-01-09 | 四川中光防雷科技股份有限公司 | TVS protective devices with failure breaking function |
-
2014
- 2014-01-14 CN CN201420020337.4U patent/CN203722223U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107565508A (en) * | 2017-10-25 | 2018-01-09 | 四川中光防雷科技股份有限公司 | TVS protective devices with failure breaking function |
| CN107565508B (en) * | 2017-10-25 | 2019-09-27 | 四川中光防雷科技股份有限公司 | TVS protective device with failure breaking function |
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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 |
Granted publication date: 20140716 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |