CN203588780U - Polymer thermistor capable of displaying working state - Google Patents
Polymer thermistor capable of displaying working state Download PDFInfo
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- CN203588780U CN203588780U CN201320699920.8U CN201320699920U CN203588780U CN 203588780 U CN203588780 U CN 203588780U CN 201320699920 U CN201320699920 U CN 201320699920U CN 203588780 U CN203588780 U CN 203588780U
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- thermosensitive resistor
- macromolecular thermosensitive
- indicating material
- temperature indicating
- material layer
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Abstract
The utility model discloses a polymer thermistor capable of displaying a working state. The polymer thermistor comprises a polymer thermistor body, wherein a reversible thermochromic material layer capable of changing color along with a temperature change so as to display the working state of the polymer thermistor body is arranged at the outer surface of the polymer thermistor body; the reversible thermochromic material layer can partially or completely cover the outer surface of the polymer thermistor body. The temperature change state of the thermistor can be reflected by the color change of the reversible thermochromic material, so that the efficiencies for product model selection, service life judgment of the product, prevention and elimination of the product, circuit design, fault handling and the like are improved.
Description
[technical field]
The utility model relates to a kind of thermistor for short circuit, overcurrent or overtemperature protection, particularly relates to a kind ofly can showing by reversible temperature indicating material the macromolecular thermosensitive resistor of its operating state.
[background technology]
Three kinds of operating states of the general existence of macromolecular PTC thermistor, are respectively low temperature, low resistance state, high temperature, high resistance guard mode and failure state.When circuit is normally worked, thermistor temp and room temperature are close, and resistance is very little, can not hinder electric current and pass through, and now it is in low temperature, low resistance operating state; While there is overcurrent phenomenon when circuit because fault; thermistor is because heating power increase makes himself temperature rising; when temperature surpasses switch temperature; resistance moment can become very large; current limit in circuit is arrived to very low level; voltage in circuit is nearly all added in thermistor two ends, thereby can play the effect of other element of protection, and now it is in high temperature, high resistance guard mode.After artificial cut-out circuit is fixed a breakdown, the resistance of thermistor can return to rapidly original level, and after fault is got rid of, thermistor can continue without replacing to use.Thermistor in guard mode, when being carried in its both end voltage higher than its proof voltage value, surface temperature can continue to raise, and burns, and this is its failure state.In production testing, practical engineering application, the judgement to the operating state of thermistor, product type screening, product judgement in useful life, the potential safety hazard of prevention and eliminating product, the aspects such as circuit design and troubleshooting are significant.Yet current macromolecular thermosensitive resistor cannot be quick, detect online and obtain simply, intuitively a series of information of the operating state of thermistor.
[summary of the invention]
The utility model object is intended to address the above problem, and provides a kind of and can change fast by surface color, simply and intuitively react himself macromolecular thermosensitive resistor of operating state.
For achieving the above object, the utility model provides a kind of macromolecular thermosensitive resistor that can display working condition, this macromolecular thermosensitive resistor, comprise macromolecular thermosensitive resistor, at the outer surface of described macromolecular thermosensitive resistor, be provided with and can vary with temperature and change color, to show the reversible temperature indicating material layer of macromolecular thermosensitive resistor operating state, described reversible temperature indicating material layer segment or be covered in the outer surface of macromolecular thermosensitive resistor completely.
Described macromolecular thermosensitive resistor is the macromolecular thermosensitive resistor of Curie temperature between 110 ℃-160 ℃.
Described reversible temperature indicating material layer is reversible temperature indicating material is coated on to the part or all of outer surface of macromolecular thermosensitive resistor and forms.
The reversible temperature indicating material that part is coated on the outer surface of macromolecular thermosensitive resistor forms word or pattern.
Described reversible temperature indicating material layer is reversible temperature indicating material is doped in macromolecular thermosensitive resistor product packaging material and forms.
The reversible temperature indicating material being doped in macromolecular thermosensitive resistor product packaging material forms word or pattern.
Described reversible temperature indicating material layer is to form macromolecular thermosensitive resistor encapsulated layer with reversible temperature indicating material.
Described reversible temperature indicating material layer is PbCrO4 type heat-sensitive variable colour thermo-color.
The beneficial effects of the utility model are, it efficiently solves conventional macromolecular thermosensitive resistor cannot be fast, simply, detect online and obtain intuitively the problem of the information of macromolecular PTC thermistor operating state.The thermistor of this composite construction of the present utility model reacts thermistor temp variable condition by reversible temperature indicating material change color, thereby has greatly improved the efficiency of potential safety hazard, circuit design and the troubleshooting etc. of product type screening, product judgement in useful life, prevention and eliminating product.
[accompanying drawing explanation]
Fig. 1 is embodiment 1 structural representation.
Fig. 2 is embodiment 2 structural representations.
Fig. 3 is embodiment 3 structural representations.
[embodiment]
The following example is further explanation of the present invention, and the present invention is not constituted any limitation.
Embodiment 1
Consult Fig. 1, macromolecular thermosensitive resistor 10 that can display working condition of the present utility model comprises macromolecular thermosensitive resistor 11 and reversible temperature indicating material layer 12.
As shown in Figure 1, in the present embodiment, macromolecular thermosensitive resistor 11 is the macromolecular thermosensitive resistor of polyethylene/carbon ink material system, and this material Curie temperature is about 120 ℃, and resistive surface temperature is about 100 ℃.During lower than Curie temperature, thermistor is in low temperature, low resistance operating state, and while surpassing Curie temperature, thermistor is in high temperature, high resistance guard mode, and when temperature surpasses 280 ℃, thermistor will, in failure state, face and burn frequently.At the outer surface of described macromolecular thermosensitive resistor 11, be provided with and can vary with temperature and change color, to show the reversible temperature indicating material layer 12 of macromolecular thermosensitive resistor operating state.In the present embodiment, described reversible temperature indicating material layer 12 is PbCrO4 type heat-sensitive variable colour thermo-color, and these reversible temperature indicating material layer 12 parts are covered in the outer surface of macromolecular thermosensitive resistor.More specifically, the reversible temperature indicating material layer 12 that this part covers can be made into word or the pattern that represents product type, and is coated on the outer surface of macromolecular thermosensitive resistor 11.
When macromolecular thermosensitive resistor 10 that can display working condition is connected in circuit, described macromolecular thermosensitive resistor 11 surface temperatures are during lower than 90 ℃ of left and right, described reversible temperature indicating material layer 12 is shown as khaki, and now described macromolecular thermosensitive resistor 10 is low temperature, low resistance operating state; When described macromolecular thermosensitive resistor 11 surface temperatures are during 100～110 ℃, 120～130 ℃ or 140 ℃, described reversible temperature indicating material layer 12 is shown as orange colour, salmon pink or dark salmon pink, and now described macromolecular thermosensitive resistor 10 is high temperature protection state; When described macromolecular thermosensitive resistor 11 surface temperatures are during at 280～300 ℃, described reversible temperature indicating material layer 12 is shown as dark orange or bronzing, and now described macromolecular thermosensitive resistor 10 is failure state.When described macromolecular thermosensitive resistor 11 surface temperatures are during 100～110 ℃, 120～130 ℃ or 140 ℃; described reversible temperature indicating material layer 12 is shown as orange colour, salmon pink or dark salmon pink; when described macromolecular thermosensitive resistor 10 is high temperature protection state; when artificial cut-out circuit or after fixing a breakdown; the resistance of described macromolecular thermosensitive resistor 10 can return to rapidly original level, and described macromolecular thermosensitive resistor 10 can continue without replacing to use.
The color of the reversible temperature indicating material layer 12 of macromolecular thermosensitive resistor 10 that can display working condition of the present utility model varies with temperature obviously, accurate and reversible, it changes by surface color can not only be fast, simple and react intuitively himself operating state, and greatly improved product type screening, product judgement in useful life, prevention and got rid of the efficiency of potential safety hazard, circuit design and the troubleshooting etc. of product.
Embodiment 1 can display working condition operating state and the judgement of temperature indicating color of the quick resistance 10 of macromolecule as shown in table 1.
Table 1
Embodiment 2
The basic structure of macromolecular thermosensitive resistor 10 that as shown in Figure 2, can display working condition is with embodiment 1.Difference is, in the present embodiment, reversible temperature indicating material layer 13 is reversible temperature indicating material is doped in macromolecular thermosensitive resistor 11 product packaging material and forms.In the present embodiment, word or the pattern of the reversible temperature indicating material formation product type in encapsulating material will be entrained in, this reversible temperature indicating material layer 13 is PbCrO4 type heat-sensitive variable colour thermo-color, when macromolecular thermosensitive resistor 11 surface temperatures change, the reversible temperature indicating material color being entrained in encapsulating material changes, thereby demonstrates the operating state of macromolecular thermosensitive resistor.
In the present embodiment, macromolecular thermosensitive resistor 11 is the macromolecular thermosensitive resistor of polypropylene/carbon black materials system, and this material Curie temperature is about 150 ℃, and now resistive surface temperature is about 120 ℃.Lower than Curie temperature, thermistor, in low temperature, low resistance operating state, surpasses Curie temperature, and thermistor is in high temperature, high resistance guard mode, and resistance invalid temperature is 280 ℃ of left and right.
In the present embodiment; when described macromolecular thermosensitive resistor 11 surface temperatures are during at 120～140 ℃; described reversible temperature indicating material layer 13 is shown as salmon pink or dark salmon pink; when described macromolecular thermosensitive resistor 10 is high temperature protection state; when artificial cut-out circuit or after fixing a breakdown; the resistance of macromolecular thermosensitive resistor 10 can return to rapidly original level, and described macromolecular thermosensitive resistor 10 can continue without replacing to use.Described macromolecular thermosensitive resistor 10 that can display working condition, the color of the reversible temperature indicating material layer 13 of its outer surface varies with temperature obviously, accurate and reversible.
Embodiment 2 can display working condition the quick resistance 10 use states of macromolecule and the judgement of temperature indicating color as shown in table 2.
Table 2
Embodiment 3
As shown in Figure 3, macromolecular thermosensitive resistor 10 basic structures that can display working condition are with embodiment 1, and difference is that in the present embodiment, reversible temperature indicating material layer 14 is using reversible temperature indicating material as encapsulated layer, to be encapsulated in the outer surface of macromolecular thermosensitive resistor 11 completely.When macromolecular thermosensitive resistor 11 surface temperatures change, the color of reversible temperature indicating material encapsulated layer changes, thereby demonstrates the operating state of macromolecular thermosensitive resistor.In the present embodiment, reversible temperature indicating material layer 14 is selected PbCrO4 type heat-sensitive variable colour thermo-color, macromolecular thermosensitive resistor 11 is the macromolecular thermosensitive resistor of polypropylene/carbon black materials system, and this material Curie temperature is about 150 ℃, and now resistive surface temperature is about 120 ℃.Lower than Curie temperature, thermistor, in low temperature, low resistance operating state, surpasses Curie temperature, and thermistor is in high temperature, high resistance guard mode, and resistance invalid temperature is 280 ℃ of left and right.Macromolecular thermosensitive resistor 10 that can display working condition of the present utility model, the color of its reversible temperature indicating material layer 14 varies with temperature obviously, accurate and reversible.This can display working condition macromolecular thermosensitive resistor 10 by surface color, change can not only be fast, simple and react intuitively himself operating state, and greatly improved product type screening, product judgement in useful life, prevention and got rid of the efficiency of potential safety hazard, circuit design and the troubleshooting etc. of product.
Embodiment 3 can display working condition the quick resistance 10 use states of macromolecule and the judgement of temperature indicating color as shown in table 3.
Table 3
Although the utility model is disclosed by above embodiment; but protection range of the present utility model is not limited to this; do not departing under the condition of the utility model design, the distortion that above each member is done, replacement etc. all will fall within the scope of claim of the present utility model.
Claims (6)
- One kind can display working condition macromolecular thermosensitive resistor, comprise macromolecular thermosensitive resistor, it is characterized in that, at the outer surface of described macromolecular thermosensitive resistor, be provided with and can vary with temperature and change color, to show the reversible temperature indicating material layer of macromolecular thermosensitive resistor operating state, described reversible temperature indicating material layer segment or be covered in the outer surface of macromolecular thermosensitive resistor completely.
- 2. macromolecular thermosensitive resistor that can display working condition as claimed in claim 1, is characterized in that, described macromolecular thermosensitive resistor is the macromolecular thermosensitive resistor of Curie temperature between 110 ℃-160 ℃.
- 3. macromolecular thermosensitive resistor that can display working condition as claimed in claim 1, is characterized in that, described reversible temperature indicating material layer is reversible temperature indicating material is coated on to the part or all of outer surface of macromolecular thermosensitive resistor and forms.
- 4. macromolecular thermosensitive resistor that can display working condition as claimed in claim 1, is characterized in that, described reversible temperature indicating material layer is reversible temperature indicating material is doped in macromolecular thermosensitive resistor product packaging material and forms.
- 5. macromolecular thermosensitive resistor that can display working condition as claimed in claim 1, is characterized in that, described reversible temperature indicating material layer is to form macromolecular thermosensitive resistor encapsulated layer with reversible temperature indicating material.
- As described in claim 1-5 any one can display working condition macromolecular thermosensitive resistor, it is characterized in that, described reversible temperature indicating material layer is PbCrO 4type heat-sensitive variable colour thermo-color.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320699920.8U CN203588780U (en) | 2013-11-07 | 2013-11-07 | Polymer thermistor capable of displaying working state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320699920.8U CN203588780U (en) | 2013-11-07 | 2013-11-07 | Polymer thermistor capable of displaying working state |
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| Publication Number | Publication Date |
|---|---|
| CN203588780U true CN203588780U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320699920.8U Expired - Fee Related CN203588780U (en) | 2013-11-07 | 2013-11-07 | Polymer thermistor capable of displaying working state |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110534948A (en) * | 2019-08-20 | 2019-12-03 | 东风海博新能源科技有限公司 | Fast socket, connector |
| DE102018116208A1 (en) * | 2018-07-04 | 2020-01-09 | Phoenix Contact Gmbh & Co. Kg | Surge protection device |
-
2013
- 2013-11-07 CN CN201320699920.8U patent/CN203588780U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018116208A1 (en) * | 2018-07-04 | 2020-01-09 | Phoenix Contact Gmbh & Co. Kg | Surge protection device |
| CN110534948A (en) * | 2019-08-20 | 2019-12-03 | 东风海博新能源科技有限公司 | Fast socket, connector |
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| 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: 20140507 Termination date: 20201107 |