CN208256394U - A kind of PTC thermistor element - Google Patents
A kind of PTC thermistor element Download PDFInfo
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- CN208256394U CN208256394U CN201820923887.5U CN201820923887U CN208256394U CN 208256394 U CN208256394 U CN 208256394U CN 201820923887 U CN201820923887 U CN 201820923887U CN 208256394 U CN208256394 U CN 208256394U
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- ptc thermistor
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Abstract
The utility model provides a kind of PTC thermistor element, comprising: PTC thermistor layer, positive electrode, negative electrode, the first insulating heat-conductive film and the second insulating heat-conductive film, the PTC thermistor layer are electrically connected with the positive electrode and the negative electrode respectively；The first insulating heat-conductive film and the second insulating heat-conductive film are separately positioned on the two opposite surfaces of the PTC thermistor layer.The PTC thermistor element of the utility model embodiment has good insulating properties and thermal conductivity, can efficiently conduct heat to the shell of heater；By controlling the voltage and quantity of PTC thermistor, heating temperature can control.
Description
Technical field
The utility model relates to PTC thermistor technical field more particularly to a kind of PTC thermistor elements.
Background technique
Auxiliary of the heater for motor vehicles heats.It uses PTC thermistor element to be heated.The prior art
PTC thermistor element can not combine insulating properties and thermal conductivity when being applied to heater.
Utility model content
The utility model embodiment provides a kind of PTC thermistor element, to solve the PTC thermistor member of the prior art
Part is when being applied to heater, the problem of can not combining insulating properties and thermal conductivity.
The utility model embodiment provides a kind of PTC thermistor element, comprising: PTC thermistor layer, is born positive electrode
Electrode, the first insulating heat-conductive film and the second insulating heat-conductive film, the PTC thermistor layer respectively with the positive electrode and described negative
Electrode electrical connection；The first insulating heat-conductive film and the second insulating heat-conductive film are separately positioned on the PTC thermistor layer
Two opposite surfaces on.
Further, further includes: shell, the PTC thermistor layer, the positive electrode, the negative electrode, described first are absolutely
Edge heat conducting film and the second insulating heat-conductive film are respectively positioned in the shell；The surface of the shell using hot-spraying technique or
Oxidation technology is coated with the first insulating film.
Further, first insulating film with a thickness of 0.01~0.5mm.
Further, the first insulating heat-conductive film and the second insulating heat-conductive film are by one layer of second insulating film and one layer
Thermal conductive silicon glue film composition, wherein second insulating film is than the thermal conductive silicon glue film close to the PTC thermistor layer.
Further, second insulating film with a thickness of 0.05~0.1mm, the thermal conductive silicon glue film with a thickness of 0.2~
0.8mm。
Further, the first insulating heat-conductive film and the second insulating heat-conductive film are the silica gel with fibre structure
Film.
Further, the pellosil with fibre structure with a thickness of 0.2~0.8mm.
Further, the PTC thermistor layer is made of multiple PTC thermistors, all PTC thermistors are divided
For at least one set, the quantity of the positive electrode is one, the number of the grouping of the quantity of the negative electrode and the PTC thermistor
Measure identical, PTC thermistor described in every group is electrically connected with the positive electrode, PTC thermistor described in every group respectively with it is each
The negative electrode electrical connection；The positive electrode is described between the PTC thermistor layer and the first insulating heat-conductive film
Negative electrode is between the PTC thermistor layer and the second insulating heat-conductive film.
Further, the positive electrode and the negative electrode are strip shaped electric poles；The positive electricity extremely convex shape；If described negative
The quantity of electrode is one, then the negative electricity extremely convex shape；It is all described if the quantity of the negative electrode is two or more
Negative electrode forms convex shape.
Further, further includes: insulating frame, the insulating frame are separated into multiple blocks, the PTC thermistor setting
In the block of the insulating frame.
Further, the maximum gauge after the insulating frame expanded by heating is not more than the thickness of the PTC thermistor layer.
Further, the PTC thermistor layer, the first insulating heat-conductive film, the second insulating heat-conductive film and described
Insulating frame is convex shape.
Further, further includes: the hot with the PTC of the first insulating heat-conductive film is arranged in buffer layer, the buffer layer
On the surface that quick resistive layer is separated by.
When the PTC thermistor element of the utility model embodiment is applied to heater, the first insulating heat-conductive film and second
Insulating heat-conductive film can play the role of insulation, and PTC thermistor layer is avoided to leak electricity；Meanwhile first insulating heat-conductive film and second absolutely
Edge heat conducting film can play thermally conductive effect, to be conducive to the heat that PTC thermistor generates efficiently being transmitted to heater
Shell, so that heat is further diverted into desired position by it.
Detailed description of the invention
It, below will be to the utility model embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only that this is practical new
Some embodiments of type for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the explosive view of the PTC thermistor element of the utility model embodiment；
Fig. 2 is the perspective view of the PTC thermistor element of the utility model embodiment；
Fig. 3 is the partial sectional view of the PTC thermistor element of the utility model embodiment；
Fig. 4 is the side view of the PTC thermistor element of the utility model embodiment.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
It clearly and completely describes, it is clear that the embodiments are a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
The every other embodiment obtained, fall within the protection scope of the utility model.
The utility model embodiment provides a kind of PTC thermistor element.The PTC thermistor element can be used for automobile
Heater.As shown in figures 1-4, which includes: PTC thermistor layer 1, positive electrode 2, negative electrode 3, first
Insulating heat-conductive film 4 and the second insulating heat-conductive film 5, PTC thermistor layer 1 are electrically connected with positive electrode 2 and negative electrode 3 respectively, thus
It can electrified regulation.In addition, can control heating temperature by the voltage of control positive electrode 2 and negative electrode 3.Preferably, positive electrode 2
PTC thermistor layer 1 is protruded from the terminals of negative electrode 3, to be electrically connected with peripheral control unit etc..Preferably, positive electricity
It is furnished with insulation rubber mat around pole 2 and negative electrode 3, to avoid electric leakage.First insulating heat-conductive film 4 and the second insulating heat-conductive film 5 difference
It is arranged on the two opposite surfaces of PTC thermistor layer 1, is contacted with PTC thermistor layer 1.It should be understood that " element "
An overall structure being made of herein only for expression several independent elements, specific form can be device etc..
When the PTC thermistor element is applied to heater, the first insulating heat-conductive film 4 and the second insulating heat-conductive film 5 can
Play the role of insulation, PTC thermistor layer 1 is avoided to leak electricity；Meanwhile first insulating heat-conductive film 4 and the second insulating heat-conductive film 5 can
Thermally conductive effect is played, heat-conducting area is increased, is added to be conducive to for the heat that PTC thermistor generates efficiently being transmitted to
The shell of hot device, so that heat is further diverted into desired position by it.
In a preferred embodiment, thermistor element further include: shell (not shown).PTC thermistor
Layer 1, positive electrode 2, negative electrode 3, the first insulating heat-conductive film 4 and the second insulating heat-conductive film 5 are located in shell.It adopts on the surface of the shell
The first insulating film is coated with hot-spraying technique or oxidation technology.First insulating film can be the film of ceramic material.Pass through
The first insulating film is set on the surface of shell, further functions as the effect of insulation.It should be understood that first insulating film is general
Coating is on an interior surface of the housing；In addition, first insulating film can also be coated in simultaneously in the inner surface and the outer surface of shell.
In a preferred embodiment, the first insulating heat-conductive film 4 and the second insulating heat-conductive film 5 are by one layer of second insulating film
It is formed with one layer of thermal conductive silicon glue film.Second insulating film can be polyimide film.Second insulating film plays the role of insulation, and will
Heat transfer is to thermal conductive silicon glue film；Thermal conductive silicon glue film plays the role of high-efficiency heat conduction, transfers heat to the shell of heater.Its
In, insulating film close to PTC thermistor layer 1, that is, forms than thermal conductive silicon glue film and is followed successively by PTC thermistor layer 1, the second insulating film
With the layer structure of thermal conductive silicon glue film.Preferably, the second insulating film with a thickness of 0.05~0.1mm, thermal conductive silicon glue film with a thickness of
0.2~0.8mm, to be more advantageous to efficiently thermally conductive while guaranteeing insulation.It should be understood that no matter the PTC temperature-sensitive
Resistive element includes shell and the first insulating film thereon, does not still include shell and the first insulating film thereon, the first insulation
Heat conducting film 4 and the second insulating heat-conductive film 5 can be above-mentioned two-layer film configurations.
In an additional preferred embodiment, when the PTC thermistor element includes shell, 4 He of the first insulating heat-conductive film
Second insulating heat-conductive film 5 can be a film structure.Specifically, the first insulating heat-conductive film 4 and the second insulating heat-conductive film 5 are tool
There is the pellosil of fibre structure.The pellosil of the fibre structure, since with fibre structure, intensity is not than having fibre structure
Pure silicon glue is high, is hardly damaged rupture, meanwhile, silica gel can play the role of insulation.It is furthermore preferred that the pellosil with fibre structure
With a thickness of 0.2~0.8mm, thus be more advantageous to guarantee insulation while it is efficiently thermally conductive.
Specifically, PTC thermistor layer 1 is made of multiple PTC thermistors.Specifically, multiple PTC thermistors are successively
Arrangement, forms multiple rows of multiple row.The quantity of PTC thermistor is indefinite, can be arranged according to the actual situation, in general, in certain area
Interior arrangement that can be more as far as possible, in a preferred embodiment, the quantity of PTC thermistor is 44.Each PTC thermistor
Thickness should be consistent substantially, to avoid PTC thermistor and the first insulating heat-conductive film 4 and/or the second insulation of certain positions
Heat conducting film 5 contacts unevenly, leads to heating efficiency reduction or hot-spot.
All PTC thermistors are divided at least one set.By being grouped to PTC thermistor, can control respectively according to demand
Every group of PTC thermistor is made to be heated.The quantity of positive electrode 2 is one, the quantity of negative electrode 3 and point of PTC thermistor
The quantity of group is identical.Every group of PTC thermistor is electrically connected with positive electrode 2, every group of PTC thermistor respectively with each negative electrode
3 electrical connections.For example, in a preferred embodiment, PTC thermistor is grouped into three groups, every group of PTC comprising at least one column
Thermistor.The quantity of negative electrode 3 is three, the first negative electrode 31 respectively arranged in parallel, the second negative electrode 32 and third
Negative electrode 33.First negative electrode 31, the second negative electrode 32 and third negative electrode 33 are electrically connected with three groups of PTC thermistors respectively.
Specifically, positive electrode 2 is located between PTC thermistor layer 1 and the first insulating heat-conductive film 4, negative electrode 3 is located at PTC
Between thermal resistor layer 1 and the second insulating heat-conductive film 5.For example, in a preferred embodiment, the first negative electrode 31, second is negative
Electrode 32 and third negative electrode 33 are located between PTC thermistor layer 1 and the second insulating heat-conductive film 5.Preferably, 2 He of positive electrode
Negative electrode 3 is strip shaped electric poles.
Specifically, the PTC thermistor element further include: insulating frame 6.It should be understood that insulating frame 6 is located at shell
In vivo.The material of insulating frame 6 is heat-barrier material.Insulating frame 6 is separated into multiple blocks.PTC thermistor setting is being isolated
In the block of frame 6.Preferably, the block of the separation can be the strip block being set side by side, then each column PTC thermistor is set
It sets in a strip block.Preferably, the block of the separation can be blocky block, then each PTC thermistor setting exists
In one blocky block.It should be understood that the block can also be other forms, it can specifically divide and set according to actual needs
It sets.
Maximum gauge after 6 expanded by heating of insulating frame is not more than the thickness of PTC thermistor layer 1, to avoid positive electrode
2, negative electrode 3 is separated with PTC thermistor layer 1.
Preferably, PTC thermistor element further include: buffer layer 7.It should be understood that buffer layer 7 is located at shell
It is interior.Buffer layer 7 is arranged on the surface of the first insulating heat-conductive film 4 being separated by with PTC thermistor layer 1.It should be understood that the
There are two opposite surfaces for one insulating heat-conductive film 4, and a surface and PTC thermistor layer 1 are opposite, then another surface be exactly with
The meaning on the surface that PTC thermistor layer 1 is separated by, following " being separated by " is identical, repeats no more.When the PTC thermistor element
When being arranged in the heater, when heater is by hitting, shell can apply pressure, buffering to PTC thermistor element
Layer 7 can play buffer function, avoid instantaneous pressure is excessive from leading to PTC thermistor fragmentation；Furthermore, it is possible to make each PTC temperature-sensitive
Resistance is all contacted with shell, balances the in uneven thickness of PTC thermistor, increases heat-conducting area.The material of buffer layer 7 can be
Copper sheet is compressed, with good thermal conductivity and ductility.
Preferably, when PTC thermistor element is arranged in the heater, concrete shape structure can be according to heater
It is laid out and adjusts.For example, the heater has waterway channel at the two corners of shell when heater is water-warming heater, therefore,
PTC thermistor can be arranged in the corresponding position of PTC thermistor layer 1 less, and PTC thermistor layer 1 is made to form convex shape.One
In preferred embodiment, that is, at two corners each two PTC thermistors can be arranged less in the corresponding position of PTC thermistor layer 1.Together
Sample, the shape of positive electrode 2, negative electrode 3, the first insulating heat-conductive film 4, the second insulating heat-conductive film 5, insulating frame 6 and buffer layer 7
Also corresponding adjustment.For example, positive electrode 2, the first insulating heat-conductive film 4, the second insulating heat-conductive film 5, insulating frame 6 and buffer layer 7 are equal
For convex shape.If the quantity of negative electrode 3 is one, negative electrode 3 is convex shape；If the quantity of negative electrode 3 is two or more,
All negative electrodes 3 form convex shape.For example, when the quantity of negative electrode 3 is 3, the first negative electrode 31,32 and of the second negative electrode
Third negative electrode 33 forms convex shape.It should be understood that the protruding end of the structure of above-mentioned all convex shapes is positioned at ipsilateral corresponding
Position.
To sum up, the PTC thermistor element of the utility model embodiment has good insulating properties and thermal conductivity, can be high
Conduct heat to effect the shell of heater；By controlling the voltage and quantity of PTC thermistor, heating temperature can control.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
Although the preferred embodiment of the utility model embodiment has been described, those skilled in the art are once learnt
Basic creative concept, then additional changes and modifications can be made to these embodiments.So appended claims are intended to solve
It is interpreted as including preferred embodiment and all change and modification for falling into the utility model embodiment range.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements not only wrap
Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, article
Or the element that terminal device is intrinsic.In the absence of more restrictions, being wanted by what sentence "including a ..." limited
Element, it is not excluded that there is also other identical elements in process, method, article or the terminal device for including the element.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be wanted with right
Subject to the protection scope asked.
Claims (10)
1. a kind of PTC thermistor element characterized by comprising PTC thermistor layer, positive electrode, negative electrode, first are absolutely
Edge heat conducting film and the second insulating heat-conductive film, the PTC thermistor layer are electrically connected with the positive electrode and the negative electrode respectively；
The first insulating heat-conductive film and the second insulating heat-conductive film are separately positioned on the two opposite tables of the PTC thermistor layer
On face.
2. PTC thermistor element according to claim 1, which is characterized in that further include: shell, the PTC temperature-sensitive electricity
Resistance layer, the positive electrode, the negative electrode, the first insulating heat-conductive film and the second insulating heat-conductive film are respectively positioned on the shell
In vivo；
The surface of the shell is coated with the first insulating film using hot-spraying technique or oxidation technology.
3. PTC thermistor element according to claim 2, it is characterised in that: first insulating film with a thickness of
0.01~0.5mm.
4. PTC thermistor element according to claim 1 or 2, it is characterised in that: the first insulating heat-conductive film and institute
It states the second insulating heat-conductive film to be made of one layer of second insulating film and one layer of thermal conductive silicon glue film, wherein the second insulating film ratio
The thermal conductive silicon glue film is close to the PTC thermistor layer.
5. PTC thermistor element according to claim 4, it is characterised in that: second insulating film with a thickness of
0.05~0.1mm, the thermal conductive silicon glue film with a thickness of 0.2~0.8mm.
6. PTC thermistor element according to claim 2, it is characterised in that: the first insulating heat-conductive film and described
Second insulating heat-conductive film is the pellosil with fibre structure.
7. PTC thermistor element according to claim 6, it is characterised in that: the pellosil with fibre structure
With a thickness of 0.2~0.8mm.
8. PTC thermistor element according to claim 1, it is characterised in that: the PTC thermistor layer is by multiple
PTC thermistor composition, all PTC thermistors are divided at least one set, and the quantity of the positive electrode is one, described
The quantity of negative electrode is identical as the quantity of the grouping of the PTC thermistor, PTC thermistor described in every group with the positive electricity
Pole electrical connection, PTC thermistor described in every group are electrically connected with each negative electrode respectively；The positive electrode is located at the PTC
Between thermal resistor layer and the first insulating heat-conductive film, the negative electrode is located at the PTC thermistor layer and described second
Between insulating heat-conductive film.
9. PTC thermistor element according to claim 8, which is characterized in that further include: insulating frame, the isolation
Frame is separated into multiple blocks, and the PTC thermistor is arranged in the block of the insulating frame.
10. PTC thermistor element according to claim 1, which is characterized in that further include: buffer layer, the buffer layer
It is arranged on the surface of the first insulating heat-conductive film being separated by with the PTC thermistor layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820923887.5U CN208256394U (en) | 2018-06-14 | 2018-06-14 | A kind of PTC thermistor element |
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| CN201820923887.5U CN208256394U (en) | 2018-06-14 | 2018-06-14 | A kind of PTC thermistor element |
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| CN208256394U true CN208256394U (en) | 2018-12-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108962518A (en) * | 2018-06-14 | 2018-12-07 | 北京枫山科技有限公司 | A kind of PTC thermistor element |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108962518A (en) * | 2018-06-14 | 2018-12-07 | 北京枫山科技有限公司 | A kind of PTC thermistor element |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200507 Address after: 241006 workshop 5, Xisan Road, Erba Economic Development Zone, Erba Town, Jiujiang District, Wuhu City, Anhui Province Patentee after: Wuhu Demeng auto parts partnership (limited partnership) Address before: 100176 Daxing District Tianbao garden four Li 72-2, Beijing Patentee before: BEIJING FENGSHAN TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200803 Address after: 241000 workshop 5, Erba Economic Development Zone, Jiujiang District, Wuhu City, Anhui Province Patentee after: WUHU HUIZHAN NEW ENERGY TECHNOLOGY Co.,Ltd. Address before: 241006 workshop 5, Xisan Road, Erba Economic Development Zone, Erba Town, Jiujiang District, Wuhu City, Anhui Province Patentee before: Wuhu Demeng auto parts partnership (L.P.) |