A kind of conductive heating film and seat thin film heaterTechnical field
The present invention relates to automotive seating art field, more particularly, relate to a kind of conductive heating film and seat thin film heater.
Background technology
Along with the fast development of modern automobile industry technology, electric heating base chair system is as a kind of important vehicle comfort system, and widely driver and crew welcome.It has more direct, rapid, energy-conservation seat heating heating effect than mounted air conditioner system, progressively becomes the basic function requirement of cold region vehicle in winter, obtains the accreditation in market more and more sooner.
In recent years, a kind of emerging printed conductor type seat thin film heater technical study is arisen at the historic moment.It is characterized in that having a pair beam electrode, a pair beam electrode separately attached branch electrodes as attached comb electrode.Arranged opposite between the respective attached branch electrodes of a pair beam electrode, in pectination symmetry electrode pattern.Pectination symmetry electrode patterning is generally conductive gold layer or silver layer, with cover the PTC(Positive Temperature Coefficient of graphite+organic filler) the thermal barrier coatings material such as carbon slurry carries out stacked printing and synthesizes, and achieves more uniform film heating film.The thermal resistance material of PTC carbon serous coat is owing to having positive temperature coefficient resistor feature, and the characteristic of its electrical impedance value presents and rises along with the rising of temperature, the feature reduced along with the decline of temperature.
Usually, this thin film heater inside there is a pair beam electrode, a pair beam electrode spaced fixing distance between attached separately pectination symmetry electrode, the PT C carbon serous coat thermal barrier coatings of covering covers between pectination symmetry electrode, plays the effect of resistive UNICOM.Under loading certain voltage, electric current, from the pectination symmetry electrode of side, flows to the pectination symmetry electrode of opposite side through thermal barrier coatings.Now, thermal barrier coatings produces electro heat effect.Along with the rising of heating-up temperature, resistance the having positive temperature coefficient resistor feature and rising thereupon also because of PTC carbon serous coat of electric loop, loop current then declines in inverse state thereupon.Therefore, himself heating is suppressed, and the ascendant trend of temperature is also suppressed, and shows the form that heating temp is subject to suppression automatically, and namely this repressed temperature values provides the seat operating temperature of automobile heating seat.Therefore, in actual vehicular applications, this type of printed conductor type seat thin film heater with PTC carbon serous coat thermal barrier coatings is rendered as the heated at constant temperature feature of A.T.C.
But due to the application at automotive seat, consider the difference characteristic of different crowd to the different demands of seat heating-up temperature, the market demand arranging multiple different heating-up temperature gear is real.And traditional PTC thermal resistance material class thin film heater is difficult to meet the need of market.
Usually, the different temperatures that solve this type of PTC thermal resistance material class thin film heater controls, and often needs to use the power-supply controller of electric with voltage transformation feature, and the heter temperature of carrying out under different voltage-drop loading controls.But, the cost increase of vehicle-mounted power controller to be often difficult to accept by client, have impact on the universal of market application.
Therefore, how to solve the problem that heating film is difficult to local temperature adjustment, and reduce application cost, be more easy to the popularization and application in market, become the technical matters that those skilled in the art are urgently to be resolved hurrily.
Summary of the invention
The object of the present invention is to provide a kind of conductive heating film and seat thin film heater, to solve the problem that heating film is difficult to local temperature adjustment, and reduce application cost, be more easy to the popularization and application in market.
For achieving the above object, the invention provides following technical scheme:
A kind of conductive heating film, comprising:
Film substrate;
Be arranged at least three electrodes on described film substrate, the pectination branch electrodes that electrode described in each all has beam electrode and is connected with this beam electrode;
Be arranged on described film substrate, for covering the PTC thermal barrier coatings of pectination branch electrodes described in each.
Preferably, in above-mentioned conductive heating film, it is the first beam electrode, the second beam electrode and the 3rd beam electrode that described beam electrode at least comprises, described first beam electrode is connected with the first pectination branch electrodes, described second beam electrode is connected with the second pectination branch electrodes, and described 3rd beam electrode is connected with the 3rd pectination branch electrodes.
Preferably, in above-mentioned conductive heating film,
Described first beam electrode and described first pectination branch electrodes, with described second beam electrode and described second pectination branch electrodes, form the first electrode group of pectination arranged opposite form;
Described second beam electrode and described second pectination branch electrodes, with described 3rd beam electrode and described 3rd pectination branch electrodes, form the second electrode group of pectination arranged opposite form;
Described first electrode group and described PTC thermal barrier coatings form a PTC heat-generating units;
Described second electrode group and described PTC thermal barrier coatings form the 2nd PTC heat-generating units.
Preferably, in above-mentioned conductive heating film, described first beam electrode and described first pectination branch electrodes, described second beam electrode and described second pectination branch electrodes and described 3rd beam electrode and described 3rd pectination branch electrodes, be the conductive coating be printed on described film substrate.
Preferably, in above-mentioned conductive heating film, described film substrate is mylar, polycarbonate film or Kapton;
Described PTC thermal barrier coatings is the thermal resistance carbon slurry coating material of the positive temperature coefficient feature containing graphite and organic filler;
Described conductive coating is conductive gold layer or conductive silver layer.
Preferably, in above-mentioned conductive heating film, a described PTC heat-generating units and described 2nd PTC heat-generating units are symmetrical along the line of centers of described second beam electrode.
Preferably, in above-mentioned conductive heating film, it is the first beam electrode, the second beam electrode, the 3rd beam electrode, the 4th beam electrode and the 5th beam electrode that described beam electrode at least comprises;
Described first beam electrode is connected with the first pectination branch electrodes, described second beam electrode is connected with the second pectination branch electrodes, described 3rd beam electrode is connected with the 3rd pectination branch electrodes, described 4th beam electrode is connected with the 4th pectination branch electrodes, and described 5th beam electrode is connected with the 5th pectination branch electrodes.
Preferably, in above-mentioned conductive heating film,
Described first beam electrode and described first pectination branch electrodes, with described second beam electrode and described second pectination branch electrodes, form the first electrode group of pectination arranged opposite form;
Described second beam electrode and described second pectination branch electrodes, with described 3rd beam electrode and described 3rd pectination branch electrodes, form the second electrode group of pectination arranged opposite form;
Described 3rd beam electrode and described 3rd pectination branch electrodes, with described 4th beam electrode and described 4th pectination branch electrodes, form the third electrode group of pectination arranged opposite form;
Described 4th beam electrode and described 4th pectination branch electrodes, with described 5th beam electrode and described 5th pectination branch electrodes, form the 4th electrode group of pectination arranged opposite form;
Described first electrode group and described PTC thermal barrier coatings form a PTC heat-generating units;
Described second electrode group and described PTC thermal barrier coatings form the 2nd PTC heat-generating units;
Described third electrode group and described PTC thermal barrier coatings form the 3rd PTC heat-generating units;
Described 4th electrode group and described PTC thermal barrier coatings form the 4th PTC heat-generating units.
Preferably, in above-mentioned conductive heating film,
Described first beam electrode and described first pectination branch electrodes, described second beam electrode and described second pectination branch electrodes, described 3rd beam electrode and described 3rd pectination branch electrodes, described 4th beam electrode and described 4th pectination branch electrodes and described 5th beam electrode and described 5th pectination branch electrodes, be the conductive coating be printed on described film substrate;
Described film substrate is mylar, polycarbonate film or Kapton;
Described PTC thermal barrier coatings is the thermal resistance carbon slurry coating material of the positive temperature coefficient feature containing graphite and organic filler;
Described conductive coating is conductive gold layer or conductive silver layer.
A kind of seat thin film heater, the electric plug connector comprising conductive heating film and be electrically connected with described conductive heating film by connection wire;
Described conductive heating film is the conductive heating film as above described in any one.
As can be seen from above-mentioned technical scheme, conductive heating film provided by the invention, film substrate arranges beam electrode and the pectination branch electrodes of more than three or three, thus can form multiple correspondence extraction electric loop.Carry out different loop relationship combinations through drawing electric loop to multiple correspondence, the loop matching relationship between each pectination branch electrodes can be realized.Simultaneously, the connection in series-parallel of PTC thermal barrier coatings is utilized to combine, realize the change of the external impedance of conductive heating film, and then the temperature control characteristic of impact under certain voltage effect, form the change of the different heating temperature profile under the loop matching relationship between different pectination branch electrodes.Now, be rendered as closing on single lamellar body between each pectination branch electrodes to be arranged symmetrically with, also make the electrical connection that also can realize between non-adjacent electrode crossing over spaced electrode, realize the balanced current distribution under the arrangement of intensive comb electrode, make film heating more even.The present invention not only efficiently solves the problem that heating film is difficult to local temperature adjustment, meanwhile, also significantly reduces application cost, is more easy to the popularization and application in market.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the seat thin film heater that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is a kind of principle schematic of the seat thin film heater shown in Fig. 1;
Fig. 3 is the another kind of principle schematic of the seat thin film heater shown in Fig. 1;
The structural representation of the seat thin film heater that Fig. 4 provides for another embodiment of the present invention;
Fig. 5 is a kind of principle schematic of the seat thin film heater shown in Fig. 4;
Fig. 6 is the another kind of principle schematic of the seat thin film heater shown in Fig. 4;
Fig. 7 is another principle schematic of the seat thin film heater shown in Fig. 4.
Detailed description of the invention
Core of the present invention is to provide a kind of conductive heating film and seat thin film heater, is difficult to the problem of local temperature adjustment, and reduces application cost, be more easy to the popularization and application in market at solution heating film.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1-Fig. 3, the structural representation of the seat thin film heater that Fig. 1 provides for the embodiment of the present invention; Fig. 2 is a kind of principle schematic of the seat thin film heater shown in Fig. 1; Fig. 3 is the another kind of principle schematic of the seat thin film heater shown in Fig. 1.
The conductive heating film that the embodiment of the present invention provides, comprises film substrate 04, electrode and PTC thermal barrier coatings 05.
Electrode is at least three, and is arranged on film substrate 04, the pectination branch electrodes that each electrode all has beam electrode and is connected with this beam electrode.PTC thermal barrier coatings 05 is arranged on film substrate 04, for covering each pectination branch electrodes.
As shown in Figure 1, describe in detail to have three electrodes, beam electrode is respectively the first beam electrode 10, second beam electrode 20 and the 3rd beam electrode 30, first beam electrode 10 is connected with the first pectination branch electrodes 11, second beam electrode 20 is connected with the second pectination branch electrodes the 21, three beam electrode 30 and is connected with the 3rd pectination branch electrodes 31.
First beam electrode 10 and the first pectination branch electrodes 11, with the second beam electrode 20 and the second pectination branch electrodes 21, forms the first electrode group 1020 ' of pectination arranged opposite form; Second beam electrode 20 and the second pectination branch electrodes 21, with the 3rd beam electrode 30 and the 3rd pectination branch electrodes 31, forms the second electrode group 2030 ' of pectination arranged opposite form; First electrode group 1020 ' forms a PTC heat-generating units 1020 with PTC thermal barrier coatings 05; Second electrode group 2030 ' forms the 2nd PTC heat-generating units 2030 with PTC thermal barrier coatings 05.
As shown in Figure 2, when the second beam electrode 20 loads the positive pole (+) of Vehicle Power, when the first beam electrode 10 and the 3rd beam electrode 30 load negative pole (-) of Vehicle Power, between the first beam electrode 10 and the second beam electrode 20, set up a PTC heat-generating units 1020; Meanwhile, the 2nd PTC heat-generating units 2030 is set up between the second beam electrode 20 and the 3rd beam electrode 30.Now, a PTC heat-generating units 1020 and the 2nd PTC heat-generating units 2030 form the heating mode of shunt resistance.
Be appreciated that, second beam electrode 20 is loaded the negative pole (-) of Vehicle Power, and the first beam electrode 10 and the 3rd beam electrode 30 are when loading positive pole (+) of Vehicle Power, a PTC heat-generating units 1020 and the 2nd PTC heat-generating units 2030 still form the heating mode of shunt resistance.
When fixing vehicle carried power voltage value, a PTC heat-generating units 1020 is in parallel with the 2nd PTC heat-generating units 2030 when heating, and the loop resistance values of conductive heating film 01 is relatively little, and electric current is relatively large, and magnitude of power is then relatively high.Thus, higher heating temp feature is shown as.
As shown in Figure 3, when the second beam electrode 20 is in blank state, and when the first beam electrode 10 and the 3rd beam electrode 30 load positive pole (+) and negative pole (-) of Vehicle Power respectively.One PTC heat-generating units 1020 and the 2nd PTC heat-generating units 2030 form the heating mode of series resistance.
When fixing vehicle carried power voltage value, when a PTC heat-generating units 1020 is connected with the 2nd PTC heat-generating units 2030 and heated, the loop resistance values of conductive heating film 01 is relatively large, and electric current is relatively little, and magnitude of power is then relatively low.Thus, lower heating temp feature is shown as.
It will be understood by those skilled in the art that the second beam electrode 20 and the second pectination branch electrodes 21 are accepted simultaneously and come from the first beam electrode 10 and the first pectination branch electrodes 11, and the loss in voltage of the 3rd beam electrode 30 and the 3rd pectination branch electrodes 31.Second beam electrode 20 and the second pectination branch electrodes 21 and the first beam electrode 10 and the first pectination branch electrodes 11, and the conductive pattern feature of the 3rd beam electrode 30 and the 3rd pectination branch electrodes 31 keeps symmetric offset spread to be favourable.Namely a PTC heat-generating units 1020 and the 2nd PTC heat-generating units 2030 along the second beam electrode 20 line of centers symmetrically electrically distribution characteristics be favourable.
One PTC heat-generating units 1020 and the 2nd PTC heat-generating units 2030 symmetrically electrically distribute, make a PTC heat-generating units 1020 keep same heating power feature with the 2nd PTC heat-generating units 2030, when can avoid car seat heating, the heating-up temperature of seat zones of different is unbalanced.
Conductive heating film provided by the invention, by arranging beam electrode and the pectination branch electrodes of more than three or three on film substrate, thus can form multiple correspondence extraction electric loop by distributing both positive and negative polarity.Carry out different loop relationship combinations through drawing electric loop to multiple correspondence, the loop matching relationship between each pectination branch electrodes can be realized.Simultaneously, the connection in series-parallel of PTC thermal barrier coatings 05 is utilized to combine, realize the change of the external impedance of conductive heating film 01, and then the temperature control characteristic of impact under certain voltage effect, form the change of the different heating temperature profile under the loop matching relationship between different pectination branch electrodes.Now, be rendered as closing on single lamellar body between each pectination branch electrodes to be arranged symmetrically with, also make the electrical connection that also can realize between non-adjacent electrode crossing over spaced electrode, realize the balanced current distribution under the arrangement of intensive comb electrode, make film heating more even.The present invention not only efficiently solves the problem that heating film is difficult to local temperature adjustment, meanwhile, also significantly reduces application cost, is more easy to the popularization and application in market.
In the present invention one specific embodiment, the first beam electrode 10 and the first pectination branch electrodes 11, second beam electrode 20 and the second pectination branch electrodes 21 and the 3rd beam electrode 30 and the 3rd pectination branch electrodes 31, be the conductive coating be printed on film substrate 04.Conductive coating can be conductive gold layer or conductive silver layer.
In the present invention one specific embodiment, film substrate 04 is mylar, polycarbonate film or Kapton; PTC thermal barrier coatings 05 is the thermal resistance carbon slurry coating material of the positive temperature coefficient feature containing graphite and organic filler.
Refer to Fig. 4-Fig. 7, the structural representation of the seat thin film heater that Fig. 4 provides for another embodiment of the present invention; Fig. 5 is a kind of principle schematic of the seat thin film heater shown in Fig. 4; Fig. 6 is the another kind of principle schematic of the seat thin film heater shown in Fig. 4; Fig. 7 is another principle schematic of the seat thin film heater shown in Fig. 4.
Describe in detail to have five electrodes, it should be noted that, the quantity of electrode can also be other quantity, and the present invention is not limited to the implementation of three or five electrodes.It is the first beam electrode 10, second beam electrode 20, the 3rd beam electrode 30, the 4th beam electrode 20 and the 5th beam electrode 30 that beam electrode at least comprises.
First beam electrode 10 is connected with the first pectination branch electrodes 11, second beam electrode 20 is connected with the second pectination branch electrodes 21,3rd beam electrode 30 is connected with the 3rd pectination branch electrodes 31,4th beam electrode 40 is connected with the 4th pectination branch electrodes, and the 5th beam electrode 50 is connected with the 5th pectination branch electrodes.
First beam electrode 10 and the first pectination branch electrodes 11, with the second beam electrode 20 and the second pectination branch electrodes 21, forms the first electrode group 1020 ' of pectination arranged opposite form; Second beam electrode 20 and the second pectination branch electrodes 21, with the 3rd beam electrode 30 and the 3rd pectination branch electrodes 31, forms the second electrode group 2030 ' of pectination arranged opposite form; 3rd beam electrode 30 and the 3rd pectination branch electrodes 31, with the 4th beam electrode 40 and the 4th pectination branch electrodes, form the third electrode group 3040 ' of pectination arranged opposite form; 4th beam electrode 40 and the 4th pectination branch electrodes, with the 5th beam electrode 50 and the 5th pectination branch electrodes, form the 4th electrode group 4050 ' of pectination arranged opposite form; First electrode group 1020 ' forms a PTC heat-generating units 1020 with PTC thermal barrier coatings 05; Second electrode group 2030 ' forms the 2nd PTC heat-generating units 2030 with PTC thermal barrier coatings 05; Third electrode group 3040 ' and PTC thermal barrier coatings 05 form the 3rd PTC heat-generating units 3040; 4th electrode group 4050 ' forms the 4th PTC heat-generating units 3040 with PTC thermal barrier coatings 05.
As shown in Figure 5, when the first beam electrode 10, the 3rd beam electrode 30 and the 5th beam electrode 50 load the positive pole (+) of Vehicle Power, when second beam electrode 20, the 4th beam electrode 40 load negative pole (-) of Vehicle Power, the common heating mode forming complete shunt resistance between a PTC heat-generating units 1020, the 2nd PTC heat-generating units 2030, the 3rd PTC heat-generating units 3040, the 4th PTC heat-generating units 4050.
Be appreciated that the loop resistance values of conductive heating film 01 is relatively minimum, and electric current is relatively maximum when parallel connection is heated completely for this, magnitude of power is then relatively the highest.Thus, the highest heating temp feature is shown as.
As shown in Figure 6, when the first beam electrode 10 and the 5th beam electrode 50 load the negative pole (-) of Vehicle Power, 3rd beam electrode 10 loads the positive pole (+) of Vehicle Power, and the second beam electrode 20, the 4th beam electrode 40 vacant time, between a PTC heat-generating units 1020 with the 2nd PTC heat-generating units 2030 local form group of connecting; Between 3rd PTC heat-generating units 3040, the 4th PTC heat-generating units 4050, also local forms series connection group; Jointly formed again and joint group between two series connection groups.The mixing that this connection constitutes series and parallel resistance simultaneously connects heating mode.
Be appreciated that the loop resistance values of conductive heating film 01 is relatively little, and electric current is relatively large, and magnitude of power is then relatively high when this mixing connects heating.Thus, the heating temp feature lower than heating completely in parallel is shown as.
As shown in Figure 7, when the first beam electrode 10 and the 5th beam electrode 50 load positive pole (+) and the negative pole (-) of Vehicle Power respectively, when second beam electrode 20, the 3rd beam electrode 30 and the 4th beam electrode 40 are vacant, the common heating mode forming complete series resistance between a PTC heat-generating units 1020, the 2nd PTC heat-generating units 2030, the 3rd PTC heat-generating units 3040, the 4th PTC heat-generating units 4050.
Be appreciated that, when this connects heating completely, the loop resistance values of conductive heating film 01 is relatively maximum, and electric current is relatively minimum, and magnitude of power is then relatively minimum.Thus, minimum heating temp feature is shown as.
In the present invention one specific embodiment, first beam electrode 10 and the first pectination branch electrodes 11, second beam electrode 20 and the second pectination branch electrodes 21, the 3rd beam electrode 30 and the 3rd pectination branch electrodes 31, the 4th beam electrode 40 and the 4th pectination branch electrodes and the 5th beam electrode 50 and the 5th pectination branch electrodes, be the conductive coating be printed on film substrate 04, conductive coating can be conductive gold layer or conductive silver layer.
In the present invention one specific embodiment, film substrate 04 is mylar, polycarbonate film or Kapton; PTC thermal barrier coatings 05 is the thermal resistance carbon slurry coating material of the positive temperature coefficient feature containing graphite and organic filler.
The seat thin film heater that the embodiment of the present invention provides, the electric plug connector 03 comprising conductive heating film and be electrically connected with conductive heating film by connection wire 02; Conductive heating film is as above conductive heating film 01 disclosed in embodiment.
Each beam electrode have respectively independently connect wire 02 as electrical connection loop.Each connection connected between wire 02 and beam electrode can be riveted for metal terminal, conducting resinl cementation etc. is electrically connected form.Each connects wire 02 and is connected with external control circuit through electric plug connector 03.
The seat thin film heater 00 that the embodiment of the present invention provides, goes for cushion heating arrangement and the backrest heating arrangement of automotive seat.
In this specification sheets, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.