CN205881605U - Over -current protection component that has adhesive body - Google Patents
Over -current protection component that has adhesive body Download PDFInfo
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- CN205881605U CN205881605U CN201620882964.8U CN201620882964U CN205881605U CN 205881605 U CN205881605 U CN 205881605U CN 201620882964 U CN201620882964 U CN 201620882964U CN 205881605 U CN205881605 U CN 205881605U
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- electrode
- adhesive body
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- ptc module
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Abstract
The utility model relates to an over -current protection component that has adhesive body contains: at least one PTC module, a first electrode, a second electrode that has positive temperature coefficient, the PTC module is located between first electrode and the second electrode, a bottom insulating layer, the laminating first electrode, a top insulating layer, the laminating second electrode, an adhesive body, the cladding constitutes the integral structure with bottom insulating layer and top insulating layer all around in the PTC module, and including wrapping up in PTC module, first electrode and the 2nd electrode package, first and second electrodes extend to one of them side end face surface of adhesive body respectively, a first outer termination electrode, wrapped insulating layer, adhesive body, first electrode component integration structural element's a side end face and component are surperficial from top to bottom, the outer termination electrode of a second, wrapped insulating layer, adhesive body, second electrode component integration structural element's opposite side terminal surface and component are surperficial from top to bottom. The utility model discloses the over -current protection component has good weatherability when guaranteeing the miniaturization.
Description
Technical field
This utility model relates to a kind of over-current protecting element having adhesive body, and accessory has the miniaturization mistake of good weatherability properties
Overcurrent protection element.
Background technology
Over-current protecting element can maintain relatively low resistance value at a normal temperature, has variations in temperature reaction acumen
Characteristic, i.e. when overcurrent occurring in circuit or crossing high temperataure phenomena, its resistance can increase to a high value moment, makes circuit be in
Off state, to reach the purpose of protection circuit element, this class component has been widely used on electronic circuit protection components and parts.
Make the trend of technology microminiaturization to adapt to IC, electronics and IT products have moved towards compact trend, with
For SMD, its specification is usually SMD1812,1210,1206,0805,0603,0402 etc., with specification 1812 and 0402 is
Example, SMD1812 element surface amasss as 35.49mm2, its volume is 6.97 mm3, it is converted to the be exposed to environment of element unit volume
Middle area is 5.09mm2；SMD0402 element surface amasss as 2.556mm2, its volume is 0.258 mm3, it is converted to unit volume
It is 9.91mm that element is exposed area in the environment2；SMD0402 element unit volume is exposed area in the environment and is almost
2 times of SMD1812.So small size over-current protecting element element is more prone to be affected by external environment, thus accelerate
The deterioration of its electric property, the SMD0402 in over-current protecting element is almost dimension limit, cross undersized SMD product its
Weatherability can become excessively poor, it is impossible to meets the demand that electronic product is growing.
Utility model content
All the solving the technical problem that of this utility model is: provide a kind of over-current protecting element having adhesive body, is protecting
While card over-current protecting element miniaturization, its weatherability can be promoted.
This utility model technical problem is realized by following proposal: a kind of over-current protecting element having adhesive body, its bag
Contain:
At least one has the PTC module of positive temperature coefficient, one first electrode, one second electrode, and PTC module is located at the first electricity
Between pole and the second electrode；
One bottom insulation layer, the first electrode of fitting；
One top layer, the second electrode of fitting；
One adhesive body, is coated on PTC module surrounding and bottom insulation layer and top layer being integrally formed structure, will
In PTC module, the first electrode and the second electrode package are rolled in, the first and second electrodes extend respectively to a wherein side of adhesive body
Surface, face；
One first external electrode, coated insulation layer, adhesive body, a side end face of the first electrode being integrally formed structural detail
With element upper and lower surface；
One second external electrode, coated insulation layer, adhesive body, another side of the second electrode being integrally formed structural detail
Face and element upper and lower surface.
On the basis of such scheme, described PTC module comprises the polymer-matrix electric conduction composite wood with positive temperature coefficient
Material and the PTC unit of metal electrode, wherein, polymer base conductive composite material is stacked between two metal electrodes.
On the basis of such scheme, described first electrode is located at bottom insulation layer upper surface, with PTC module lower surface metal
Electrode is fitted；Described second electrode is located at top layer lower surface, fits with PTC module upper surface metal electrode.
On the basis of such scheme, described PTC module is in series by the PTC unit of more than two.
On the basis of such scheme, described PTC module is constituted with PTC unit parallel connection by two.
The described polymer base conductive composite material specific insulation when 25 DEG C is less than 0.01 Ω .cm, and it carries electric current
More than 0.25A/mm2, it is characterised by that it comprises:
1) at least one polymer, accounts for polymer base conductive composite material volume fraction 30%～60%；Described polymer is:
Polyethylene, chlorinated polyethylene, oxidic polyethylene, polrvinyl chloride, hycar, acrylonitrile-butadiene-benzene second
Alkene copolymer, polystyrene, Merlon, polyamide, polyimides, polyethylene terephthalate, poly terephthalic acid
Butanediol ester, polyphenylene oxide, polyphenylene sulfide, polyformaldehyde, phenolic resin, politef, tetrafluoraoethylene-hexafluoropropylene copolymer,
Poly-trifluoro-ethylene, polyvinyl fluoride, maleic anhydride grafted polyethylene, polypropylene, Kynoar, epoxy resin, ethyl vinyl acetate second
One in alkene copolymer, polymethyl methacrylate, ethylene-acrylic acid copolymer and mixture thereof.
2) at least one conductive filler, described conductive filler is selected from metal dust or conductivity ceramics powder.
Described metal dust is selected from: one in nickel, copper, ferrum, stannum, lead, silver, gold, platinum, palladium, bismuth, indium and mixture thereof or
Its alloy.
Described conductivity ceramics powder is selected from: ramet, vanadium carbide, zirconium carbide, titanium carbide, niobium carbide, dimolybdenum carbide, carbonization
One among among hafnium, tungsten carbide, ditungsten carbide or Cr3C2 and mixture thereof.Preferably a kind of metal carbides powder
End, metal carbide powders accounts for the 40%～70% of described polymer base conductive composite material volume fraction, is scattered in described polymerization
In thing base material.
Described insulating barrier is the material system that ceramic material, polymer or polymer matrix composite etc. have heat dissipation characteristics
Become.
Described first electrode is located at bottom insulation layer upper surface, fits with PTC module lower surface metal electrode, the first electrode
Extend to the side end face surface of adhesive body, with the first external electrode electrical connection；Described second electrode is located at top layer
Lower surface, fits with PTC module upper surface metal electrode, and the second electrode extends to the side end face surface of adhesive body, with second
External electrode is electrically connected.
Described adhesive body, and bottom insulation layer and top layer being integrally formed structure, by PTC module, the first electrode
In being rolled in the second electrode package, make the first electrode and the second external electrode electrical isolation, the second electrode and the first external electrode electricity
Air bound from.
Described adhesive body base material one in epoxy resin, phenolic resin, polyester resin, the polyamide or they
Complex.
Said two external electrode, first and second electrode base material are selected from: in silver, gold, copper, nickel, palladium, bismuth, indium or platinum
A kind of or its alloy complex, and with coating, be stained with cover, evaporated film, sputtering thin film or hot pressing combination process are made.
Of the present utility model it is advantageous in that: by introducing adhesive body structure, makes over-current protecting element ensure element
There is while miniaturization good weatherability.
Accompanying drawing explanation
Fig. 1 is the structure sectional view of the over-current protecting element of embodiment 1；
Fig. 2 is the structure sectional view of the over-current protecting element of PTC block coupled in series；
Fig. 3 is the structure sectional view of the over-current protecting element of PTC wired in parallel；
Fig. 4 is 85 DEG C, embodiment 1SMD element and tradition SMD element electric property comparison diagram in the environment of 85%RH；
Figure medium size illustrates:
10,20,30 PTC module；
11,21,31 first external electrode；
12,22,32 second external electrode；
13,23,33 top layer；
14,24,34 bottom insulation layer；
15,25,35 first electrode；
16,26,36 second electrode；
17,27,37 adhesive body；
In embodiment 1:
The upper metal electrode of 19 PTC modules；
The lower metal electrode of 18 PTC modules；
The ptc layer of 110 PTC modules；
In embodiment 3:
38, the upper metal electrode one, two of 312 PTC modules；
39, the lower metal electrode one, two of 311 PTC modules；
3-10,3-13 ptc layer one, two.
Detailed description of the invention
Below by way of specific embodiment, the utility model is described in further detail.
Embodiment 1
Fig. 1 is shown in the structure sectional view of the over-current protecting element of embodiment 1, the first electricity that bottom insulation layer 14 is fitted
Pole 15, top layer 13 is fitted the second electrode 16, has PTC module 10 upper and lower surface of positive temperature coefficient, is stacked at first
Between electrode 15 and the second electrode 16, the surrounding of PTC module 10 is surrounded by adhesive body 17, adhesive body 17 and bottom insulation layer 14 and
Top layer 13 being integrally formed structure, in PTC module the 10, first electrode 15 and the second electrode 16 are wrapped in, the first electricity
Pole 15 and the second electrode 16 extend respectively to the wherein side end face surface of adhesive body 17；First external electrode 11 is coated on,
Lower insulating barrier 13,14, a side end face of adhesive body the 17, first electrode 15 be integrally formed structure and element upper and lower surface；The
Two external electrodes 12 in the upper and lower insulating barrier of cladding 13,14, adhesive body the 17, second electrode 16 be integrally formed structure another
Side end face and element upper and lower surface.
The present embodiment enumerates a kind of preparation technology preparing this utility model over-current protecting element；Comprise the steps of
1) the previously prepared PTC module with positive temperature coefficient；
2) there is the material of heat dissipation characteristics as insulation using ceramic material, polymer or polymer matrix composite etc.
Layer, is provided with the first electrode and the second electrode on the insulating layer；
3) in bottom insulation layer 14, in the first electrode 15 and top layer 13, the second electrode 16 stamps, is stained with or on point
Conductive paste；
4) being connected by conductive paste, the PTC module 10 step 1) prepared is connected to the first electrode in bottom insulation layer 14
15 and top layer 13 between the second electrode 16；
5) space between described bottom insulation layer 14 and top layer 13 is implemented insulant encapsulation, formed
Described adhesive body 17；
6) insulating barrier up and down 13 of the semi-finished product that step 5) is made, 14, adhesive body the 17, first electrode 15 is integrally formed
Change structure one side end face and element upper and lower surface prepares the first external electrode 11 respectively, and electrically connect with corresponding first electrode composition
Connect；The insulating barrier up and down 13 of semi-finished product, 14, the side end face of adhesive body the 17, second electrode 16 be integrally formed structure and element
Upper and lower surface prepares the second external electrode 12 respectively, and constitutes electrical connection with corresponding second electrode 16, constitutes SMD element.
The described polymer base conductive composite material specific insulation when 25 DEG C is less than 0.01 Ω .cm, and it carries electric current
More than 0.25A/mm2。
Described adhesive body base material one in epoxy resin, phenolic resin, polyester resin, the polyamide or they
Complex, preferred epoxy, more preferably bisphenol A type epoxy resin.
Said two external electrode, first and second electrode base material are selected from: in silver, gold, copper, nickel, palladium, bismuth, indium or platinum
One or its alloy complex, preferably Copper Foil；And with coating, be stained with cover, evaporated film, sputtering thin film or hot pressing combination process system
Become.
Fig. 4 is 85 DEG C, in the environment of 85%RH, and the SMD element of the present embodiment 1 and tradition SMD element electric property contrast
Figure, in Fig. 4, SMD size of product is 0402, is small size SMD product, as seen from the figure, over current protection described in the utility model
Protection element can keep good weatherability undersized while, and service life is longer.
Embodiment 2
As shown in the structure sectional view that Fig. 2 is the over-current protecting element of PTC block coupled in series, other structures and embodiment 1
Identical, simply PTC unit PTC in series module 20；
Fitting in bottom insulation layer 24 first electrode 25, top layer 23 is fitted the second electrode 26, has positive temperature system
PTC module 20 upper and lower surface of number, is stacked between the first electrode 25 and the second electrode 26, and the surrounding of PTC module 20 is by sealing
Body 27 surrounds, and adhesive body 27 and bottom insulation layer 24 and top layer 23 being integrally formed structure, by PTC module 20, first
In electrode 25 and the second electrode 26 are wrapped in, the first electrode 25 and the second electrode 26 extend respectively to a side end face of adhesive body 17
Surface；First external electrode 21 be coated with upper and lower insulating barrier 23,24, adhesive body the 27, first electrode 25 be integrally formed structure
One side end face and element upper and lower surface；Second external electrode 22 in the upper and lower insulating barrier of cladding 23,24, adhesive body the 27, second electrode
The opposite side end face of 26 be integrally formed structures and element upper and lower surface, wherein, PTC module 20 is according to by upper and lower PTC module
Upper metal electrode one 29,28 and the PTC module one that constitutes of ptc layer 1, and the upper gold of upper and lower PTC module above it
Belonging to electrode 2 212,211 and the PTC module two of ptc layer 2 213 composition, PTC module two is superimposed upon above PTC module one,
The upper metal electrode 2 212 of PTC module connects with the second electrode 26；The lower metal electrode 1 of PTC module and the first electrode 25
Connect；The lower metal electrode two of upper the metal electrode one 29 and PTC module of PTC module connects, and constitutes two PTC series units
PTC module 20.
Embodiment 3
Fig. 3 is shown in the structure sectional view of the over-current protecting element of PTC wired in parallel, other structures and embodiment 1 phase
With, simply PTC unit PTC in series module 30；
Fitting in bottom insulation layer 34 first electrode 35, top layer 33 is fitted the second electrode 36, has positive temperature system
PTC module 30 upper and lower surface of number, has two PTC unit parallel connections to be located between the first electrode 35 and the second electrode 36, PTC module
The surrounding of 30 is surrounded by adhesive body 37, adhesive body 37 and bottom insulation layer 34 and top layer 33 being integrally formed structure, will
In PTC module the 30, first electrode 35 and the second electrode 36 are wrapped in, the first electrode 35 and the second electrode 36 extend respectively to sealing
The wherein side end face surface of body 37；First external electrode 31 be coated on upper and lower insulating barrier 33,34, adhesive body the 37, first electrode
One side end face of 35 be integrally formed structures and element upper and lower surface；Second external electrode 32 be coated with upper and lower insulating barrier 33,
34, the opposite side end face of adhesive body the 17, second electrode 36 be integrally formed structure and element upper and lower surface.
The upper metal electrode one, 2 38,312 of PTC module connects with the second electrode 36, the lower metal electrode one of PTC module,
2 39,311 connect with the first electrode 35, and ptc layer one, two 3-10,3-13 are respectively placed in the upper metal electrode of PTC module
One, 2 38,312 and the lower metal electrode one, 2 39,311 of PTC module.
In this utility model, on the basis of embodiment 1 structure, can also be mono-by two or more PTC in described PTC module
Unit constitutes PTC module in parallel or in series, or PTC block coupled in series or other elements in parallel, to realize different functions.
Content of the present utility model and feature have revealed that as above, however this utility model above described only briefly or
Pertaining only to specific part of the present utility model, protection domain of the present utility model should be not limited to the content disclosed in embodiment, and
Should include various without departing substantially from replacement of the present utility model and modification, and be contained by claims of the present utility model.
Claims (5)
1. the over-current protecting element having adhesive body, it is characterised in that it comprises:
At least one has the PTC module of positive temperature coefficient, one first electrode, one second electrode, PTC module be located at the first electrode and
Between second electrode；
One bottom insulation layer, the first electrode of fitting；
One top layer, the second electrode of fitting；
One adhesive body, is coated on PTC module surrounding and bottom insulation layer and top layer being integrally formed structure, by PTC mould
In block, the first electrode and the second electrode package are rolled in, the first and second electrodes extend respectively to a wherein side end face table of adhesive body
Face；
One first external electrode, coated insulation layer, adhesive body, a side end face of the first electrode being integrally formed structural detail and unit
Part upper and lower surface；
One second external electrode, coated insulation layer, adhesive body, the opposite side end face of the second electrode being integrally formed structural detail and
Element upper and lower surface.
The over-current protecting element having adhesive body the most according to claim 1, it is characterised in that described PTC module comprises
Having the polymer base conductive composite material of positive temperature coefficient and the PTC unit of metal electrode, wherein, polymer-matrix electric conduction is combined
Material is stacked between two metal electrodes.
The over-current protecting element having adhesive body the most according to claim 1 and 2, it is characterised in that described first electrode
It is located at bottom insulation layer upper surface, fits with PTC module lower surface metal electrode；Described second electrode is located under top layer
Surface, fits with PTC module upper surface metal electrode.
The over-current protecting element having adhesive body the most according to claim 3, it is characterised in that described PTC module by
The PTC unit of more than two is in series.
The over-current protecting element having adhesive body the most according to claim 3, it is characterised in that described PTC module by
Two are constituted with PTC unit parallel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620882964.8U CN205881605U (en) | 2016-08-16 | 2016-08-16 | Over -current protection component that has adhesive body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620882964.8U CN205881605U (en) | 2016-08-16 | 2016-08-16 | Over -current protection component that has adhesive body |
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| Publication Number | Publication Date |
|---|---|
| CN205881605U true CN205881605U (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620882964.8U Active CN205881605U (en) | 2016-08-16 | 2016-08-16 | Over -current protection component that has adhesive body |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109963361A (en) * | 2017-12-22 | 2019-07-02 | 埃贝赫卡腾有限两合公司 | Manufacture the method for being thermally generated element |
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2016
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109963361A (en) * | 2017-12-22 | 2019-07-02 | 埃贝赫卡腾有限两合公司 | Manufacture the method for being thermally generated element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 200083 806, floor 8, No. 125, Liuying Road, Hongkou District, Shanghai Patentee after: Shanghai Wei'an Electronic Co.,Ltd. Address before: Seven road 201202 Shanghai Pudong New Area Shiwan No. 1001 Patentee before: Shanghai Changyuan Wayon Circuit Protection Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 806, 8th floor, 125 Liuying Road, Hongkou District, Shanghai 200083 Patentee after: Shanghai Weian Electronics Co.,Ltd. Address before: 806, 8th floor, 125 Liuying Road, Hongkou District, Shanghai 200083 Patentee before: Shanghai Wei'an Electronic Co.,Ltd. |
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| CP03 | Change of name, title or address |