CN201804648U - Three-terminal element formed through combination of PTC (positive temperature coefficient) thermistor and piezoresistor, and electronic equipment - Google Patents
Three-terminal element formed through combination of PTC (positive temperature coefficient) thermistor and piezoresistor, and electronic equipment Download PDFInfo
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- CN201804648U CN201804648U CN2010205147601U CN201020514760U CN201804648U CN 201804648 U CN201804648 U CN 201804648U CN 2010205147601 U CN2010205147601 U CN 2010205147601U CN 201020514760 U CN201020514760 U CN 201020514760U CN 201804648 U CN201804648 U CN 201804648U
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Abstract
The utility model discloses a three-terminal element formed through combination of a PTC (positive temperature coefficient) thermistor and a piezoresistor, and equipment. The three-terminal element formed through combination of the PTC thermistor and the piezoresistor includes a piezoresistor body, a PTC thermistor body, a first pin, a second pin, a third pin and an epoxy resin layer; a first terminal of the piezoresistor body is electrically connected with the first pin, and a second terminal of the piezoresistor body is electrically connected with the second pin; a first terminal of the PTC thermistor body is electrically connected with the second pin, and a second terminal of the PTC thermistor body is electrically connected with the third pin; and the piezoresistor body, the PTC thermistor body, the first pin, the second pin and the third pin are encapsulated with the cured epoxy resin layer. The utility model has the benefits as follows: the piezoresistor body and the PTC thermistor body are encapsulated with epoxy resin to form the three-terminal element, so that the functions of overvoltage protection and overcurrent protection of the piezoresistor body and the PTC thermistor body are integrated, and the trends towards miniature and light electronic components can be met.
Description
Technical field
The utility model relates to the electronic devices and components field, relates in particular to a kind of PTC thermistor and piezo-resistance synthetic three-terminal element and electronic equipment.
Background technology
Varistor (VSR) is the abbreviation of voltage-sensitive resistor, and it is a kind of novel over-voltage protection element.The core material that constitutes piezo-resistance is a zinc oxide, zinc oxide comprises the grain boundary layer around zinc oxide grain and the crystal grain again, the resistivity of zinc oxide grain is very low, and grain boundary layer resistivity is very high, contacted two intergranules form a potential barrier that is equivalent to Zener diode, become a piezo-resistance unit, many resistance units compose in parallel the varistor matrix by series connection.Varistor is when work, surge energy is all born in each piezo-resistance unit, and these piezo-resistance unit are to be evenly distributed on substantially in the whole resistive element, just whole resistive element is all born energy, and be that electrical power is born in the interface unlike Zener two utmost point voltage-stabiliser tubes, Here it is, and the ceramic varistor utensil has than the very large through-flow and energy of Duoing of Zener two utmost point voltage-stabiliser tubes reason by norm.The resistance value of varistor changes with terminal voltage, can constitute overvoltage crowbar.
PTC thermistor (semistor) is a kind of semiconductor resistor of tool temperature sensitivity, in case when surpassing certain temperature (Curie temperature), its resistance value is along with the rising of temperature almost is to be increasing of phase step type.The variation of PTC thermistor body temperature can be obtained by the electric current that flows through the PTC thermistor, also can import heat or the stack of these two obtains by the external world.Macromolecular PTC thermistor often is called resettable fuse by people, because it has unique positive temperature coefficient resistor characteristic, thereby very is suitable as over-current protection device.
Existing varistor (VSR) and PTC thermistor generally are separately to use as resolution element, and the ceramic packaging form is all adopted in the encapsulation of these two kinds of resistors, because the quality of pottery self is bigger, bigger with the element individuality after the ceramic packaging, require today of more and more miniaturization at integrated circuit, have serious defective.
The utility model content
The technical problem that the utility model mainly solves provides a kind of electronic equipment that varistor (VSR) and PTC thermistor is synthesized a kind of three-terminal element and have this three-terminal element; this three-terminal element and have the electronic equipment of this three-terminal element; not only have overvoltage protection characteristic and overcurrent protection characteristic, also have the advantage of lightness and miniaturization encapsulation in addition.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: provide a kind of PTC thermistor and piezo-resistance synthetic three-terminal element, comprise piezo-resistance body, PTC thermistor body, first pin, second pin, the 3rd pin and epoxy resin layer, described first pin, second pin and the 3rd pin all have connecting portion and conductive part, and described connecting portion and conductive part conduct; First end of described piezo-resistance body is electrically connected with the connecting portion of first pin, second end of described piezo-resistance body is electrically connected with the connecting portion of second pin, first end of described PTC thermistor body is electrically connected with the connecting portion of second pin, and second end of described PTC thermistor body is electrically connected with the connecting portion of the 3rd pin; The linking part of described piezo-resistance body, PTC thermistor body, first pin, the linking part of second pin, the linking part of the 3rd pin all place in the epoxy resin layer of curing.
For solving the problems of the technologies described above, another technical scheme that the utility model adopts is: the electronic equipment of the synthetic three-terminal element of a kind of PTC of having thermistor and piezo-resistance is provided, comprises the three-terminal element that electronic equipment main body circuit, electronic equipment power source input and PTC thermistor and piezo-resistance are synthetic; The synthetic three-terminal element of described PTC thermistor and piezo-resistance comprises piezo-resistance body, PTC thermistor body, first pin, second pin, the 3rd pin and epoxy resin layer, described first pin, second pin and the 3rd pin all have connecting portion and conductive part, and described connecting portion and conductive part conduct; First end of described piezo-resistance body is electrically connected with the connecting portion of first pin, second end of described piezo-resistance body is electrically connected with the connecting portion of second pin, first end of described PTC thermistor body is electrically connected with the connecting portion of second pin, and second end of described PTC thermistor body is electrically connected with the connecting portion of the 3rd pin; The linking part of the linking part of described piezo-resistance body, PTC thermistor body, first pin, the linking part of second pin, the 3rd pin all places in the epoxy resin layer of curing; First pin of described electronic equipment is used for being connected with two power ends of external power supply with the conductive part of second pin, and two input terminals of described electronic equipment power source input are connected with the conductive part of described first pin and the 3rd pin.
The beneficial effects of the utility model are: the resolution element that is different from prior art adopts ceramic packaging can not satisfy the trend of electronic component miniaturization lightness; the utility model becomes one three end member device with the piezo-resistance body with PTC thermistor body and function epoxy encapsulation; the function of integrated piezo-resistance body and body overvoltage of PTC thermistor and overcurrent protection, and can satisfy the trend of electronic component miniaturization lightness.
Further, in the electronic equipment with the synthetic three-terminal element of PTC thermistor and piezo-resistance of the present utility model, connect electronic equipment power source end and electronic equipment main body power end by three-terminal element, the high voltage pulse of the lightning voltage that can import the electronic equipment power source end effectively, electric spark high pressure, unknown cause provides the low resistance discharge channel, can prevent the damage of various high pressure or overcurrent electronic equipment main body circuit.
Description of drawings
Fig. 1 is the exploded view of the utility model embodiment three-terminal element;
Fig. 2 is the left view before the utility model embodiment three-terminal element cured epoxy resin;
Fig. 3 is the left view behind the utility model embodiment three-terminal element cured epoxy resin;
Fig. 4 is that the utility model embodiment has the schematic diagram that three-terminal element is connected in the electronic equipment power source end;
Fig. 5 is that the utility model embodiment has the schematic diagram that three-terminal element is connected in device power supply (DPS) end and various interface.
Wherein, 1: the piezo-resistance body; 2:PTC thermistor body; 3: the first pins; 4: the second pins; 5: the three pins; 6: epoxy resin layer
Embodiment
By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, give explanation below in conjunction with execution mode and conjunction with figs. are detailed.
See also Fig. 1, Fig. 2 and Fig. 3, the three-terminal element that the utility model PTC thermistor and piezo-resistance are synthetic, comprise piezo-resistance body 1, PTC thermistor body 2, first pin 3, second pin 4, the 3rd pin 5 and epoxy resin layer 6, described first pin 3, second pin 4 and the 3rd pin 5 all have connecting portion and conductive part, and described connecting portion and conductive part conduct; First end of described piezo-resistance body 1 is electrically connected with the connecting portion of first pin 3, second end of described piezo-resistance body 1 is electrically connected with the connecting portion of second pin 4, first end of described PTC thermistor body 2 is electrically connected with the connecting portion of second pin 4, and second end of described PTC thermistor body 2 is electrically connected with the connecting portion of the 3rd pin 5; The linking part of the linking part of described piezo-resistance body 1, PTC thermistor body 2, first pin 3, the linking part of second pin 4, the 3rd pin 5 all places in the epoxy resin layer 6 of curing.
The utility model is packaged into one three end member device with piezo-resistance body 1 and PTC thermistor body 2 usefulness epoxy resin 6; the overvoltage and the overcurrent protection function of integrated piezo-resistance body 1 and PTC thermistor body 2 can satisfy the trend of electronic component miniaturization lightness.
Operation principle is: during PTC thermistor body normal temperature is low resistance state; when occurring opening circuit or transship; when having unusual big electric current to flow through PTC thermistor body; PTC thermistor body generates heat because of overcurrent; heating is a high-resistance state above PTC thermistor volume resistance value drastic change after the range points, has limited the electric current of circuit, finishes overcurrent protection and overtemperature protection; to prevent the damage to electronic equipment main body circuit of high temperature, big electric current, PTC thermistor body 2 will recover automatically when removing short circuit or overload.The piezo-resistance body is in high-impedance state usually, seal in circuit as thunder and lightning or not clear high voltage, when being higher than the voltage of design, the piezo-resistance body is finished to various high pressure the low resistance discharge channel is provided, prevent that high voltage, big electric current from sealing in circuit to damage of circuit, after removing high pressure, piezo-resistance body 1 reverts to high-impedance state automatically.
In an embodiment of three end member devices, piezo-resistance body 1 is Zinc-oxide piezoresistor or silicon-carbide varistor.Zinc-oxide piezoresistor and silicon-carbide varistor all can be realized the purpose of this utility model, promptly reach the purpose of overvoltage protection.
In an embodiment of three end member devices, PTC thermistor body 2 is PTC ceramic thermal resistance or PTC organic polymer thermistor.PTC ceramic thermal resistance or PTC organic polymer thermistor all can be realized the purpose of this utility model, promptly reach the purpose of overcurrent protection.
In an embodiment of three end member devices, first pin 3, second pin 4 and the 3rd pin 5 are zinc-plated pin.Zinc-plated pin can increase the weldability of element.
In an embodiment of three end member devices, the connecting portion welding of first end of piezo-resistance body 1 and first pin 3, the connecting portion welding of second end of piezo-resistance body 1 and second pin 4, the connecting portion welding of first end of PTC thermistor body 2 and second pin 4, the connecting portion welding of second end of PTC thermistor body 2 and the 3rd pin 5.
Referring to Fig. 4, the utlity model has the electronic equipment of PTC thermistor body 2 and piezo-resistance body 1 synthetic three-terminal element, comprise the three-terminal element that electronic equipment main body circuit, electronic equipment power source input and PTC thermistor and piezo-resistance are synthetic; The synthetic three-terminal element of described PTC thermistor and piezo-resistance comprises piezo-resistance body 1, PTC thermistor body 2, first pin 3, second pin 4, the 3rd pin 5 and epoxy resin layer 6, described first pin 3, second pin 4 and the 3rd pin 5 all have connecting portion and conductive part, and described connecting portion and conductive part conduct; First end of described piezo-resistance body 1 is electrically connected with the connecting portion of first pin 3, second end of described piezo-resistance body 1 is electrically connected with the connecting portion of second pin 4, first end of described PTC thermistor body 2 is electrically connected with the connecting portion of second pin 4, and second end of described PTC thermistor body 2 is electrically connected with the connecting portion of the 3rd pin 5; The linking part of the linking part of described piezo-resistance body 1, PTC thermistor body 2, first pin 3, the linking part of second pin 4, the 3rd pin 5 all places in the epoxy resin layer 6 of curing; First pin 3 of electronic equipment and the conductive part of second pin 4 are used for being connected with two power ends of external power supply, and two input terminals of electronic equipment power source input are connected with the conductive part of described first pin 3 and the 3rd pin 5.
In the electronic equipment with the synthetic three-terminal element of PTC thermistor 2 and piezo-resistance 1 of the present utility model, connect electronic equipment power source end and electronic equipment main body power end by three-terminal element, the high voltage pulse of the lightning voltage that can import the electronic equipment power source end effectively, electric spark high pressure, unknown cause provides the conductive discharge passage, can prevent the damage of various high pressure or overcurrent electronic equipment main body circuit.
In an embodiment of electronic equipment, piezo-resistance body 1 is Zinc-oxide piezoresistor or silicon-carbide varistor.Zinc-oxide piezoresistor and silicon-carbide varistor all can be realized the purpose of this utility model, promptly reach the purpose of overvoltage protection.
In an embodiment of electronic equipment, PTC thermistor body 2 is PTC ceramic thermal resistance or PTC organic polymer thermistor.PTC ceramic thermal resistance or PTC organic polymer thermistor all can be realized the purpose of this utility model, promptly reach the purpose of overcurrent protection.
In an embodiment of electronic equipment, first pin 3, second pin 4 and the 3rd pin 5 are zinc-plated pin.Zinc-plated pin can increase the weldability of element.
In an embodiment of electronic equipment, the connecting portion welding of first end of piezo-resistance body 1 and first pin 3, the connecting portion welding of second end of piezo-resistance body 1 and second pin 4, the connecting portion welding of first end of PTC thermistor body 2 and second pin 4, the connecting portion welding of second end of PTC thermistor body 2 and the 3rd pin 5.
Referring to Fig. 5, PTC thermistor 2 synthesizes the power end that three-terminal element can be connected in electronic equipment with piezo-resistance 1, also can be connected on the communication interface of electronic equipment, to realize overvoltage, overcurrent and overtemperature protection, guarantees the electronic equipment normal communication.Above-mentioned communication interface has: RS485 communication interface, RS232 communication interface, 422 communication interfaces, CAN communication interface and LAN communication interface etc.
The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (8)
1. the synthetic three-terminal element of PTC thermistor and piezo-resistance, it is characterized in that: comprise piezo-resistance body, PTC thermistor body, first pin, second pin, the 3rd pin and epoxy resin layer, described first pin, second pin and the 3rd pin all have connecting portion and conductive part, and described connecting portion and conductive part conduct;
First end of described piezo-resistance body is electrically connected with the connecting portion of first pin, second end of described piezo-resistance body is electrically connected with the connecting portion of second pin, first end of described PTC thermistor body is electrically connected with the connecting portion of second pin, and second end of described PTC thermistor body is electrically connected with the connecting portion of the 3rd pin;
The linking part of described piezo-resistance body, PTC thermistor body, first pin, the linking part of second pin, the linking part of the 3rd pin all place in the epoxy resin layer of curing.
2. the three-terminal element that PTC thermistor according to claim 1 and piezo-resistance are synthetic, it is characterized in that: described piezo-resistance body is Zinc-oxide piezoresistor or silicon-carbide varistor.
3. the three-terminal element that PTC thermistor according to claim 1 and piezo-resistance are synthetic, it is characterized in that: described PTC thermistor body is PTC ceramic thermal resistance or PTC organic polymer thermistor.
4. the three-terminal element that PTC thermistor according to claim 1 and piezo-resistance are synthetic, it is characterized in that: described first pin, second pin and the 3rd pin are zinc-plated pin.
5. the three-terminal element that PTC thermistor according to claim 1 and piezo-resistance are synthetic, it is characterized in that: first end of described piezo-resistance body and the welding of the connecting portion of first pin, second end of described piezo-resistance body and the welding of the connecting portion of second pin, first end of described PTC thermistor body and the welding of the connecting portion of second pin, second end of described PTC thermistor body and the welding of the connecting portion of the 3rd pin.
6. the electronic equipment with the synthetic three-terminal element of PTC thermistor and piezo-resistance is characterized in that, comprises the three-terminal element that electronic equipment main body circuit, electronic equipment power source input and PTC thermistor and piezo-resistance are synthesized;
The synthetic three-terminal element of described PTC thermistor and piezo-resistance comprises piezo-resistance body, PTC thermistor body, first pin, second pin, the 3rd pin and epoxy resin layer, described first pin, second pin and the 3rd pin all have connecting portion and conductive part, and described connecting portion and conductive part conduct; First end of described piezo-resistance body is electrically connected with the connecting portion of first pin, second end of described piezo-resistance body is electrically connected with the connecting portion of second pin, first end of described PTC thermistor body is electrically connected with the connecting portion of second pin, and second end of described PTC thermistor body is electrically connected with the connecting portion of the 3rd pin; The linking part of the linking part of described piezo-resistance body, PTC thermistor body, first pin, the linking part of second pin, the 3rd pin all places in the epoxy resin layer of curing;
First pin of described electronic equipment is used for being connected with two power ends of external power supply with the conductive part of second pin, and two input terminals of described electronic equipment power source input are connected with the conductive part of described first pin and the 3rd pin.
7. the electronic equipment with the synthetic three-terminal element of PTC thermistor and piezo-resistance according to claim 6, it is characterized in that: described piezo-resistance body is Zinc-oxide piezoresistor or silicon-carbide varistor; Described PTC thermistor body is PTC ceramic thermal resistance or PTC organic polymer thermistor.
8. the electronic equipment with the synthetic three-terminal element of PTC thermistor and piezo-resistance according to claim 6, it is characterized in that: described first pin, second pin and the 3rd pin are zinc-plated pin; First end of described piezo-resistance body and the welding of the connecting portion of first pin, second end of described piezo-resistance body and the welding of the connecting portion of second pin, first end of described PTC thermistor body and the welding of the connecting portion of second pin, second end of described PTC thermistor body and the welding of the connecting portion of the 3rd pin.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205147601U CN201804648U (en) | 2010-09-02 | 2010-09-02 | Three-terminal element formed through combination of PTC (positive temperature coefficient) thermistor and piezoresistor, and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205147601U CN201804648U (en) | 2010-09-02 | 2010-09-02 | Three-terminal element formed through combination of PTC (positive temperature coefficient) thermistor and piezoresistor, and electronic equipment |
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| CN201804648U true CN201804648U (en) | 2011-04-20 |
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| CN2010205147601U Expired - Fee Related CN201804648U (en) | 2010-09-02 | 2010-09-02 | Three-terminal element formed through combination of PTC (positive temperature coefficient) thermistor and piezoresistor, and electronic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103391A (en) * | 2014-08-01 | 2014-10-15 | 贵州凯里经济开发区中昊电子有限公司 | Method adopting stereoscopic metal belt technology for producing thermal pressure-sensitive resistor and products thereof |
| CN108257750A (en) * | 2018-03-07 | 2018-07-06 | 朱同江 | The production method and product of plastic packaging patch hot pressing sensitive resistor |
-
2010
- 2010-09-02 CN CN2010205147601U patent/CN201804648U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104103391A (en) * | 2014-08-01 | 2014-10-15 | 贵州凯里经济开发区中昊电子有限公司 | Method adopting stereoscopic metal belt technology for producing thermal pressure-sensitive resistor and products thereof |
| CN104103391B (en) * | 2014-08-01 | 2017-07-11 | 贵州凯里经济开发区中昊电子有限公司 | Using the method for stereo metal with technique productions hot pressing sensitive resistor and products thereof |
| CN108257750A (en) * | 2018-03-07 | 2018-07-06 | 朱同江 | The production method and product of plastic packaging patch hot pressing sensitive resistor |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGXI WANRUIHE ELECTRONIC CO., LTD. Free format text: FORMER OWNER: SHENZHEN WANRUIHE ELECTRIC CO., LTD. Effective date: 20131008 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518000 SHENZHEN, GUANGDONG PROVINCE TO: 332020 JIUJIANG, JIANGXI PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20131008 Address after: 332020 Jiangxi province Jiujiang Gongqing Gongqing City Avenue industrial area Patentee after: JIANGXI WONDHOPE ELECTRIC CO., LTD. Address before: 518000 Guangdong city of Shenzhen province Baoan District streets of Minkang Lu Min Xing Industrial Zone 3, floor 2, 1 Patentee before: Shenzhen Wanruihe Electric Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20140902 |
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| EXPY | Termination of patent right or utility model |