CN203444894U - Polymer thermistor element with multiple zero-power resistance values - Google Patents
Polymer thermistor element with multiple zero-power resistance values Download PDFInfo
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- CN203444894U CN203444894U CN201320444745.8U CN201320444745U CN203444894U CN 203444894 U CN203444894 U CN 203444894U CN 201320444745 U CN201320444745 U CN 201320444745U CN 203444894 U CN203444894 U CN 203444894U
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- thermosensitive resistor
- macromolecular thermosensitive
- pin
- macromolecular
- conductive metal
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Abstract
The utility model discloses a polymer thermistor element with multiple zero-power resistance values. The element comprises a plurality of polymer thermistor chips with positive temperature coefficients, wherein the plurality of polymer thermistor chips are arranged in a stacked manner, a conductive metal sheet provided with a pin is connected with each side of each polymer thermistor chip, a pin end of each conductive metal sheet extends out of each polymer thermistor chip, and the conductive metal sheets provided with the pins are connected with the polymer thermistor chips in a conductive manner or an insulated manner. The polymer thermistor element is high in pressure resistance and non-operating current, large in holding current, small in overcurrent and size and sensitive to overload response, and thermistors can have a cooperative response function through connection of the different pins, so that the safety of a circuit is improved.
Description
[technical field]
The utility model relates to the thermistor element that a kind of overcurrent or overtemperature protection are used, and particularly relates to a kind of macromolecular thermosensitive resistor element with a plurality of zero-power resistances.
[background technology]
Macromolecular thermosensitive resistor is used widely in fields such as computer, communication, electronics, illumination, battery, LED, motors as overcurrent or overtemperature protection device.Overcurrent protection is mainly that when in circuit, electric current surpasses the rated current of components and parts, the over-current protection device in circuit will cut off electric current, with protection equipment.Overtemperature protection is in circuit, to apply macromolecular thermosensitive resistor; when the equipment in circuit surpasses certain temperature, the resistance of macromolecular thermosensitive resistor will be along with the rising of temperature increasing of step evolution, thereby has blocked electric current; be equivalent to make circuit to interrupt, equipment is protected.
The feature of existing macromolecular thermosensitive resistor be high pressure-resistive products to maintain electric current less, the electric current that maintains of low pressure-resistive products can be larger, and it is high withstand voltage and maintain the product that electric current is large and comparatively lack, and range of application is limited to, function is comparatively single, cannot make to have between thermistor the function of cooperative response.For maintaining the product that electric current is large, generally will be by adding a large amount of conductive fillers to form more conduction tunnel or by increasing the area of dissipation of macromolecular thermosensitive resistor, or the thickness that reduces macromolecular thermosensitive resistor chip reaches and maintains greatly electric current object.Yet, add more conductive fillers and the meeting that reduces thermistor chip thickness to cause the proof voltage ability of thermistor significantly to decline, also can cause the PTC intensity (lift-drag ratio) of macromolecular thermosensitive resistor significantly to decline.The thermistor resistance that reduces the area of dissipation that increases thermistor improve maintain the method for electric current can be because of the application of dimensional problem limits product.
[summary of the invention]
The utility model is intended to address the above problem, and provide a kind of by the different zero energy resistances that are connected to form between different conductive base pins, and there is low resistance, high withstand voltage, small size size, maintain electric current greatly, and between thermistor, have mutually pin down, the macromolecular thermosensitive resistor element with a plurality of zero-power resistances of cooperative response effect.
For achieving the above object, the utility model provides a kind of macromolecular thermosensitive resistor element with a plurality of zero-power resistances, this macromolecular thermosensitive resistor element comprises a plurality of macromolecular thermosensitive resistor chips with positive temperature coefficient, a plurality of macromolecular thermosensitive resistor chips are stacked setting, in the both sides of each macromolecular thermosensitive resistor chip, be respectively connected with one with the conductive metal sheet of pin, each pin with the conductive metal sheet of pin reaches outside macromolecular thermosensitive resistor chip, with being conduction UNICOM or insulation UNICOM between the conductive metal sheet of pin and macromolecular thermosensitive resistor chip.
This macromolecular thermosensitive resistor element comprises n sheet macromolecular thermosensitive resistor chip and the conductive metal sheet of the n+1 sheet band pin that is connected with macromolecular thermosensitive resistor chip.
The macromolecular thermosensitive resistor chip of little resistance is set in the central area of this thermistor element, and the macromolecular thermosensitive resistor chip of large resistance is arranged on the outer peripheral areas of the macromolecular thermosensitive resistor chip of little resistance.
Macromolecular thermosensitive resistor chip comprises positive temp coefficient high molecular sheet material and is connected in the metal electrode diaphragm of positive temp coefficient high molecular sheet material both sides.
Form a plurality of macromolecular thermosensitive resistor chips of macromolecular thermosensitive resistor element resistance, withstand voltage scope, maintain electric current and the action protection time can be identical or different.
With the conductive metal sheet of pin, comprise a strip brace and by the outward extending pin in strip brace one end.
The pin of a plurality of conductive metal sheets with pin can be electrically connected to selectively, to produce different resistance values.
The pin of a plurality of conductive metal sheets with pin is positioned at same one side or the different edge of macromolecular thermosensitive resistor chip periphery, and described macromolecular thermosensitive resistor chip is connected by conducting resinl or scolding tin with the described conductive metal sheet with pin.
Contribution of the present utility model is, it efficiently solves the existing problem of existing macromolecular thermosensitive resistor element.The utility model is connected to form multiple zero-power resistance by different conductive base pins in circuit, make it have different performances, it also can realize the effect of a plurality of elements on identity element, thereby can save wiring board space, improves the withstand voltage and non-operating current of thermistor.The utility model also can the selectivity by pin connects make element produce the effect of feedback cooperative response, the feature such as the utlity model has low resistance, height is withstand voltage, volume is little, it is large to maintain electric current, overload response sensitivity.
[accompanying drawing explanation]
Fig. 1 is positive temp coefficient high molecular thermistor chip structural representation.
Fig. 2 is the conductive metal sheet structural representation with pin.
Fig. 3 is the macromolecular thermosensitive resistor component side view of pin many zero power resistances of being positioned at different edge.
Fig. 4 is the macromolecular thermosensitive resistor element vertical view of pin many zero power resistances of being positioned at different edge.
Fig. 5 is that pin is at the structural representation of the macromolecular thermosensitive resistor element with many zero power resistances on one side.
Fig. 6 is the structural representation of macromolecular thermosensitive resistor element with many zero power resistances of collaborative feedback effect.
Fig. 7 is the circuit theory diagrams of Fig. 6.
[embodiment]
The following example is to further explanation of the present utility model and explanation, and the utility model is not constituted any limitation.
Embodiment 1
As shown in Figure 3, by resistance value be 49m Ω, to maintain electric current be 3A, 6A is the macromolecular thermosensitive resistor chip 10E of 31.72 seconds operate time; Resistance value is 49m Ω, maintain electric current is 3A, and 6A is the macromolecular thermosensitive resistor chip 10F of 28.68 seconds operate time; Resistance value is 49m Ω, maintain electric current is 3A, and 6A is macromolecular thermosensitive resistor chip 10G totally three macromolecular thermosensitive resistor chips and be stacked with the conductive metal sheet 20 of pin in the mould of solid shape and be staggeredly placed of 30.56 seconds operate time.Wherein, with evenly smearing tin cream between the strip brace 21 of conductive metal sheet 20 of pin and the metal electrode diaphragm 12 of macromolecular thermosensitive resistor chip 10, apply after tin cream it fast by Reflow Soldering, make it to form firmly and be electrically connected to, after connection, on macromolecular thermosensitive resistor chip 10, seal one deck epoxy resins insulation layer (not shown), with mould, the pin of the conductive metal sheet with pin 20 22 is bent, make the macromolecular thermosensitive resistor element with a plurality of zero-power resistances.Between the pin 22 of the different conductive metal sheets 20 with pin, can connect selectively, in the present embodiment, by selectivity, connect the thermistor element that can obtain four kinds of different resistance values.As shown in Figure 4, pin 226 is connected with pin 229, its resistance is 108m Ω; Pin 228 is connected with pin 229, and its resistance is 156m Ω; Pin 226, pin 229 are connected with pin 227, and its resistance value is 28m Ω; Pin 227 is connected with pin 229, and pin 227 is connected with pin 226 or pin 226 is connected and can forms respectively resistance 49m Ω with pin 228.In addition, pin 226, pin 229 are connected to the resistance obtaining with pin 227 be 28m Ω, and it maintains electric current is 6A, and 12A and operate time are 18.08 seconds.Simultaneously; between each macromolecular thermosensitive resistor chip 10 of this macromolecular thermosensitive resistor element, form mutual coordinating protection relation, accelerated the operate time of this macromolecular thermosensitive resistor element, maintain electric current and increase; withstand voltage is 40V, and the maximum that maintains electric current is 40A.Macromolecular thermosensitive resistor element as shown in Figure 3, it can provide the zero power resistance resistance that is greater than 4 kinds simultaneously, thereby multiple different overcurrent protection characteristic is provided.
Embodiment 2
A slice resistance value is 0.15 Ω, maintains electric current and be respectively 2A, and 10A is the macromolecular thermosensitive resistor chip 10A that 10 seconds, voltage endurance capability are 250V operate time, and two sheet resistor value be 0.042 Ω, to maintain electric current be 5A, the macromolecular thermosensitive resistor chip 10B that 24 seconds operate times of 25A, proof voltage ability are 90V, and a slice resistance value 0.20 Ω, maintaining electric current is 2A, 10A is the macromolecular thermosensitive resistor chip 10C of 7 seconds operate time, by the mode of Fig. 5, above-mentioned macromolecular thermosensitive resistor chip is connected by conducting resinl or scolding tin with the conductive metal sheet 20 with pin, after connection, on macromolecular thermosensitive resistor chip 10, seal one deck epoxy resins insulation layer (not shown), make macromolecular thermosensitive resistor element as shown in Figure 5, connection between the pin 22 of the conductive metal sheet 20 by different band pin can obtain multiple zero-power resistance, and provide different withstand voltage rank and the action protection time, can also obtain thering is large electric current, the macromolecular thermosensitive resistor element of small resistor and high voltage endurance.
Embodiment 3
Press the connected mode shown in Fig. 6, by a slice resistance value be 0.15 Ω, to maintain electric current be 2A, 10A is that macromolecular thermosensitive resistor chip 10A and a slice resistance value that 10 seconds, voltage endurance capability are 250V is 0.042 Ω, to maintain electric current be 5A operate time, and the macromolecular thermosensitive resistor chip 10B that 24 seconds operate times of 25A, proof voltage ability are 90V is connected with the strip brace 212 of the conductive metal sheet 20 with pin.By resistance value be 1.5 Ω, to maintain electric current be 0.3A, 0.6A is 20 seconds, the proof voltage value macromolecular thermosensitive resistor chip 10D that is 60V with the strip brace 215 of conductive metal sheet 20 with pin and with the strip brace 214 of the conductive metal sheet 20 of pin, forms conduction and be connected operate time.
For circuit is carried out to overcurrent protection, between the strip brace 214 of the conductive metal sheet with pin being connected with thermistor chip 10D and the strip brace 213 of the pin sheet metal that is connected with thermistor chip 10B, one deck heat conduction and the good insulating heat-conductive layer of silica gel 30 of insulating properties are set.As shown in Figure 6; when the macromolecular thermosensitive resistor element of this structure is used for circuit; its two circuit of can simultaneously contacting; in two circuit wherein an electric current is excessive time; the heat of its generation passes to the thermistor chip 10 on another circuit by thermal conductive silicon glue-line 30; thereby the resistance generation step evolution of the thermistor chip 10 on another circuit is increased, form overcurrent protection.This macromolecular thermosensitive resistor element that possesses multiple zero power resistance can be used in feedback circuit, synchronous related circuit.As shown in Figure 6, pin 225 and pin 224 are connected to form to conductive path, and maintaining electric current is 0.3A, and formation conductive path is connected pin 222 with pin 223, article two, between circuit, be provided with insulating heat-conductive layer of silica gel 30, pin 225 is connected to form conductive path with pin 224.If while there is overcurrent; the heat producing passes to macromolecular thermosensitive resistor chip 10B by insulating heat-conductive layer of silica gel 30; the resistance generation step evolution of macromolecular thermosensitive resistor chip 10B is increased; form overcurrent protection, be equivalent to cut off the conductive path between connected pin 222 and pin 223.Adopt the macromolecular thermosensitive resistor element of these many zero power resistances can reach the object that Small current control has large-current electric way switch, thermistor in little current circuit has energy-conservation simultaneously, withstand voltage low, the feature that overcurrent is little, overload response is responsive, the fail safe of circuit is improved, and this kind of element also can be used as collaborative, the feedback of circuit.
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 (8)
1. a macromolecular thermosensitive resistor element with a plurality of zero-power resistances, it is characterized in that, this macromolecular thermosensitive resistor element comprises a plurality of macromolecular thermosensitive resistor chips (10) with positive temperature coefficient, a plurality of macromolecular thermosensitive resistor chips (10) are stacked setting, in the both sides of each macromolecular thermosensitive resistor chip (10), be respectively connected with a conductive metal sheet with pin (20), the pin (22) of each conductive metal sheet with pin (20) reaches outside macromolecular thermosensitive resistor chip (10), with being conduction UNICOM or insulation UNICOM between the conductive metal sheet (20) of pin and macromolecular thermosensitive resistor chip (10).
2. the macromolecular thermosensitive resistor element with a plurality of zero-power resistances as claimed in claim 1, it is characterized in that, this macromolecular thermosensitive resistor element comprises n sheet macromolecular thermosensitive resistor chip (10) and the conductive metal sheet (20) of the n+1 sheet band pin that is connected with macromolecular thermosensitive resistor chip (10).
3. the macromolecular thermosensitive resistor element with a plurality of zero-power resistances as claimed in claim 2, it is characterized in that, the macromolecular thermosensitive resistor chip (10) of little resistance is set in the central area of this thermistor element, and the macromolecular thermosensitive resistor chip (10) of large resistance is arranged on the outer peripheral areas of the macromolecular thermosensitive resistor chip (10) of little resistance.
4. the macromolecular thermosensitive resistor element with a plurality of zero-power resistances as claimed in claim 1, it is characterized in that, described macromolecular thermosensitive resistor chip (10) comprises positive temp coefficient high molecular sheet material (11) and is connected in the metal electrode diaphragm (12) of positive temp coefficient high molecular sheet material (11) both sides.
5. the macromolecular thermosensitive resistor element with a plurality of zero-power resistances as claimed in claim 4; it is characterized in that, form a plurality of macromolecular thermosensitive resistor chips (10) of macromolecular thermosensitive resistor element resistance, withstand voltage scope, maintain electric current and the action protection time can be identical or different.
6. a kind of macromolecular thermosensitive resistor element with a plurality of zero-power resistances as claimed in claim 1, it is characterized in that, the described conductive metal sheet with pin (20) comprises a strip brace (21) and by the outward extending pin in strip brace (21) one end (22).
7. the macromolecular thermosensitive resistor element with a plurality of zero-power resistances as claimed in claim 6, is characterized in that, the pin (22) of a plurality of conductive metal sheets with pin (20) can be electrically connected to selectively, to produce different resistance values.
8. the macromolecular thermosensitive resistor element with a plurality of zero-power resistances as claimed in claim 7, it is characterized in that, the pin (22) of described a plurality of conductive metal sheet with pin (20) is positioned at macromolecular thermosensitive resistor chip (10) peripheral same one side or different edge, and described macromolecular thermosensitive resistor chip (10) is connected by conducting resinl or scolding tin with the described conductive metal sheet with pin (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320444745.8U CN203444894U (en) | 2013-07-25 | 2013-07-25 | Polymer thermistor element with multiple zero-power resistance values |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320444745.8U CN203444894U (en) | 2013-07-25 | 2013-07-25 | Polymer thermistor element with multiple zero-power resistance values |
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| Publication Number | Publication Date |
|---|---|
| CN203444894U true CN203444894U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320444745.8U Withdrawn - After Issue CN203444894U (en) | 2013-07-25 | 2013-07-25 | Polymer thermistor element with multiple zero-power resistance values |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103426576A (en) * | 2013-07-25 | 2013-12-04 | 深圳市金瑞电子材料有限公司 | Macromolecular thermistor element with a plurality of zero-power resistance values |
-
2013
- 2013-07-25 CN CN201320444745.8U patent/CN203444894U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103426576A (en) * | 2013-07-25 | 2013-12-04 | 深圳市金瑞电子材料有限公司 | Macromolecular thermistor element with a plurality of zero-power resistance values |
| CN103426576B (en) * | 2013-07-25 | 2016-04-20 | 深圳市金瑞电子材料有限公司 | There is the macromolecular thermosensitive resistor element of multiple zero-power resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140219 Effective date of abandoning: 20160420 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140219 Effective date of abandoning: 20160420 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |