CN105465874B - Heating sheet - Google Patents
Heating sheet Download PDFInfo
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- CN105465874B CN105465874B CN201510290892.8A CN201510290892A CN105465874B CN 105465874 B CN105465874 B CN 105465874B CN 201510290892 A CN201510290892 A CN 201510290892A CN 105465874 B CN105465874 B CN 105465874B
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- electrode
- bus bar
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
- H05B2203/006—Heaters using a particular layout for the resistive material or resistive elements using interdigitated electrodes
Abstract
The invention relates to a heating sheet. A heating sheet comprises an outer sleeve and a heating film contained in the outer sleeve, wherein the heating film comprises: a first insulating layer; the conducting layer is formed on the surface of the first insulating layer; the electrode layer is formed on the surface of the conducting layer and is electrically connected with the conducting layer, the electrode layer comprises a positive electrode and a negative electrode, the positive electrode comprises a positive bus bar and a plurality of positive inner electrodes extending from the positive bus bar, the negative electrode comprises a negative bus bar and a plurality of negative inner electrodes extending from the negative bus bar, and the positive inner electrodes and the negative inner electrodes are alternately arranged and spaced from each other; and a second insulating layer formed on the surface of the electrode layer; the heating sheet further comprises a connecting wire electrically connected with the electrode layer of the heating film. The heating sheet is environment-friendly and can be powered by lower voltage.
Description
Technical field
The present invention relates to a kind of warming sheets.
Background technique
With the development of society, requirement of the people to quality of the life is higher and higher.To warming requirement when winter
More increase.Since general heating sheet uses metal electric heating silk as exothermic material, the supply voltage needed is higher, one side one
Denier electric leakage high voltage will cause electric shock, and security performance is bad, on the other hand, power supply or power supply of the higher voltage for power supply
Mode has higher requirements, thus inconvenient to carry.When weather cold, warming sheet is just widely used, and people are usually taking
Warm piece is placed in garment interior to increase warming effect.For portable utilization, existing portable warming sheet generallys use chemistry
The mode of reaction fever generates heat, such warming sheet be it is disposable, be unable to Reusability, not enough environmental protection.
Summary of the invention
Based on this, it is necessary to provide warming sheet that is a kind of more environmentally friendly and can powering using lower voltage.
A kind of warming sheet,
Including protective layer, heating film and the thermal insulation layer stacked gradually, the heating film includes：
First insulating layer；
Conductive layer is formed in the surface of first insulating layer；
Electrode layer is formed in the surface of the conductive layer and is electrically connected with the conductive layer, and the electrode layer includes positive electricity
Pole and negative electrode, the positive electrode include positive bus bar and from the positive bus bar extend it is multiple anode in electricity
Pole, the negative electrode include negative bus bar and from electrode in multiple cathode that the negative bus bar is extended, it is described just
Extremely interior electrode is arranged alternately and is spaced apart from each other with electrode in the cathode；And
Second insulating layer is formed in the surface of the electrode layer；
The warming sheet further includes the connecting line being electrically connected with the electrode layer of the heating film.
The positive bus bar and the negative bus bar are linear and set in parallel in one of the embodiments,
Set, in multiple anodes electrode from the positive bus bar close to a side of the negative bus bar to the negative bus bar
Extend, electrode converges close to a side of the positive bus bar to the anode from the negative bus bar in multiple cathode
Item extends.
The positive bus bar and the negative bus bar are arc in one of the embodiments, and interval is arranged,
The inside of electrode lateral negative bus bar from the positive bus bar extends in the anode, electrode in the cathode
The inside of the lateral positive bus bar extends from the negative bus bar.
In one of the embodiments, the heating film further include be set to first insulating layer and the conductive layer it
Between auxiliary electrode layer, the auxiliary electrode layer is electrically connected with the conductive layer, and the auxiliary electrode layer includes auxiliary positive electrode
And auxiliary negative electrode, the auxiliary positive electrode include auxiliary positive busbar and extend from the auxiliary positive busbar
Electrode in multiple auxiliary positives, the auxiliary negative electrode include auxiliary negative busbar and extend from the auxiliary negative busbar
And electrode in the multiple auxiliary negatives gone out, electrode is arranged alternately and mutually in electrode and the auxiliary negative in the auxiliary positive
Interval.
Electrode in electrode and the auxiliary negative in the auxiliary positive of the auxiliary electrode layer in one of the embodiments,
The conductive layer projection and electrode in electrode in the anode of the electrode layer and the cathode the conductive layer projection
It mutually staggers.
The heating film further includes the first glue-line and the second glue-line in one of the embodiments, and first glue-line is set
It is placed between first insulating layer and the conductive layer, second glue-line is set to the electrode layer and second insulation
Between layer.
The positive electrode has multiple in one of the embodiments, multiple positive electrode series connection；
And/or the negative electrode has multiple, multiple negative electrode series connection.
The heating member further includes controller and wireless communicator in one of the embodiments, the controller and institute
Electrode layer electrical connection is stated, the wireless communicator can receive control instruction, and send the control instruction to the controller,
The controller controls the heating of the heating film according to the control instruction.
Another warming sheet, including housing and the heating film being contained in the housing, the heating film includes：
First insulating layer；
First electrode layer is formed in the surface of first insulating layer, and the first electrode layer includes positive electrode, it is described just
Electrode include positive bus bar and from the positive bus bar extend it is multiple anode in electrode,
Conductive layer, is formed in the surface of the first electrode layer, and the conductive layer is electrically connected with the first electrode layer；
The second electrode lay is formed in the surface of the conductive layer and is electrically connected with the conductive layer, the second electrode lay
Including negative electrode, the negative electrode includes negative bus bar and the electricity from multiple cathode that the negative bus bar is extended
Pole, it is described anode in electrode be arranged alternately and be spaced apart from each other in the projection of the conductive layer with electrode in the cathode；And
Second insulating layer is formed in the surface of the second electrode lay；
The warming sheet further includes the connecting line being electrically connected with the first electrode layer of the heating film and the second electrode lay.
Above-mentioned warming sheet, since the positive electrode of the electrode layer of heating film includes electrode in multiple anodes, negative electrode includes more
Electrode in a cathode, anode in electrode be arranged alternately with electrode in cathode, reduce the spacing between adjacent interior electrode, thus
So that the resistance of the conductive layer between electrode in electrode in anode and cathode is smaller, so as to be supplied using lower voltage
Electricity, even if can reach the purpose heated rapidly using common lithium battery power supply, so as to use lower voltage to supply
For example common lithium battery connection of the connecting line of warming sheet and movable power source can be powered fever when use by electricity, electric
Pond electricity exhaust charged or replaced battery can Reusability, it is more environmentally friendly.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the warming sheet of an embodiment；
Fig. 2 is the partially exploded diagram of the warming sheet in Fig. 1；
Fig. 3 is the structural schematic diagram of the heating film of the heating member in Fig. 1；
Fig. 4 is the structural schematic diagram of the electrode layer of heating film in Fig. 3；
Fig. 5 is the structural schematic diagram of the heating film of the warming sheet of another embodiment；
Fig. 6 is the structural schematic diagram of the heating film of the warming sheet of another embodiment；
Fig. 7 is the structural schematic diagram of the heating film of the warming sheet of another embodiment；
Fig. 8 is the structural schematic diagram of the electrode layer of the heating film of the warming sheet of another embodiment；
Fig. 9 is the structural schematic diagram of the electrode layer of the heating film of the warming sheet of another embodiment；
Figure 10 is the structural schematic diagram of the electrode layer of the heating film of the warming sheet of another embodiment；
Figure 11 is the heating film Temperature Distribution photo of the embodiment 1 of thermal infrared imager shooting；
Figure 12 is the heating film Temperature Distribution photo of the embodiment 2 of thermal infrared imager shooting.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.Many details are explained in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case where violating intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
Please refer to Fig. 1 and Fig. 2, the warming sheet 10 of an embodiment, including heating film 110, housing 120, adhesive layer
130, power supply unit 150, power switch 170, temperature control switch 180 and charging interface 190.
Heating film 110 accommodates in housing 120.Housing 120 can be cloth set, rubbery outer cover or plastic shell.Specifically at this
In embodiment, housing 120 is generally tubular comprising cylinder 122 open at one end closed at one end and is covered on cylinder 122
The lid 124 of open end.Heating film 110 is fixedly arranged on the bottom of the closed end of cylinder 122.Lid 124 detachably connects with cylinder 122
It connects, certainly in other embodiments, lid 124 can also be rotatably connected with cylinder 122, for example, lid 124 and cylinder
122 is hinged, can lose in this way to avoid lid 124.
Adhesive layer 130 is fixedly arranged on one end end face of the cylinder 122 far from lid 124.Specifically in the present embodiment, adhesive layer
130 material is medical gel, so as to be pasted warming sheet 10 to the surface of body, certainly, bonding by adhesive layer 130
Layer 130 can also be using other materials such as double-sided adhesives.
Referring to Fig. 3, in the illustrated embodiment, heating film 110 includes the first insulating layer 112 stacked gradually, leads
Electric layer 114, electrode layer 116 and second insulating layer 118.
First insulating layer 112 is substrate.The material of first insulating layer 112 is glass or polymer.Preferably, polymer
For PET, PVC, PE, PMMA, PVDF, PANI or PC.Preferably, the first insulating layer 112 with a thickness of 10 μm~125 μm.
Conductive layer 114 is formed in a side surface of the first insulating layer 112.Conductive layer 114 is formed by conductive material.It is preferred that
, the material of conductive layer 114 is silver, copper, aluminium, graphene, carbon nanotube, ITO, FTO or AZO.It is further preferred that conductive layer
114 material is single-layer graphene or multi-layer graphene.When the material of conductive layer is graphene, conductive layer 114 can also contain
There is dopant, dopant is organic blended dose or inorganic doping agent.Preferably, conductive layer with a thickness of 10nm~100nm.
Electrode layer 116 is formed in the surface of conductive layer 114, and is electrically connected with conductive layer 114.
Referring to Fig. 4, in the illustrated embodiment, electrode layer 116 includes positive electrode 1162 and negative electrode 1164.Electrode
Layer 116 with a thickness of 10nm~35 μm.
Positive electrode 1162 is including positive bus bar 1162a and from multiple anodes that positive bus bar 1162a extends
Electrode 1162b.
In the illustrated embodiment, positive bus bar 1162a substantially strip, including main body (figure is not marked), interconnecting piece
(figure is not marked) and the extension being connect with interconnecting piece (figure is not marked).Main body, interconnecting piece and extension be straight line strip.Connection
The one end in portion and one end of main body is vertical connects, the other end of interconnecting piece and one end of extension is vertical connects, and main body with prolong
Extending portion is located at the two sides of interconnecting piece.
Electrode 1162b has multiple in anode, and the side of the equal autonomous agent of electrode 1162b is extended in multiple anodes.Scheming
In the embodiment shown, electrode 1162b is linear type and the main body for being each perpendicular to positive bus bar 1162a in anode.In anode
The connecting portion of electrode 1162b and positive bus bar 1162a in positive bus bar 1162a main body it is ipsilateral.Electrode in anode
The width of 1162b is 0.5mm~4mm.Width of the width of positive bus bar 1162a much larger than electrode 1162b in anode.Anode
The width of busbar 1162a is 6mm~10mm.
Negative electrode 1164 is including negative bus bar 1164a and from multiple cathode that negative bus bar 1164a extends
Electrode 1164b.
In the illustrated embodiment, negative bus bar 1164a substantially strip, including main body (figure is not marked), interconnecting piece
(figure is not marked) and the extension being connect with interconnecting piece (figure is not marked).Main body, interconnecting piece and extension be straight line strip.Connection
The one end in portion and one end of main body is vertical connects, the other end of interconnecting piece and one end of extension is vertical connects, and main body with prolong
Extending portion is located at the two sides of interconnecting piece.The main body of negative bus bar 1164a and the main body of positive bus bar 1162a are parallel to each other
And interval setting, in anode electrode 1162b be located at the main body of negative bus bar 1164a and positive bus bar 1162a main body it
Between, and in anode the one end of electrode 1162b far from positive bus bar 1162a and negative bus bar 1164a main body separately.It is negative
The interconnecting piece of pole busbar 1164a is from one end of the main body of negative bus bar 1164a to the connection close to positive bus bar 1162a
The direction in portion extends, and the interconnecting piece of negative bus bar 1164a and the interconnecting piece of positive bus bar 1162a are substantially concordant.
Electrode 1164b has multiple in cathode, and electrode 1164b is from the main body of negative bus bar 1164a close to just in cathode
The side of the main body of pole busbar 1162a is extended, and is extended towards the main body of positive bus bar 1162a, and electrode in cathode
The main body of the end of 1164b and positive bus bar 1162a are separately.In the illustrated embodiment, electrode 1164b is in cathode
The main body of linear type and vertical negative bus bar 1164a.Electrode 1164b and electrode 1162b in anode is arranged alternately in cathode
And it is spaced apart from each other, that is, adjacent with electrode 1162b in anode is electrode 1164b phase in electrode 1164b, with cathode in cathode
That adjacent is electrode 1162b in anode.Adjacent interior electrode is from different busbars.Preferably, in electrode layer 116, anode
Interior electrode 1162b is uniformly distributed with electrode 1164b in cathode, i.e., electrode 1164b in electrode 1162b and cathode in adjacent anode
Between spacing it is identical, be 2mm~8mm.The connecting portion of electrode 1164b and negative bus bar 1164a converges in cathode in cathode
Flow the ipsilateral of the main body of a 1164a.The width of electrode 1164b is 0.5mm~4mm in cathode.The width of negative bus bar 1164a
Much larger than the width of electrode 1164b in cathode.The width of negative bus bar 1164a is 6mm~10mm.
The material of electrode layer 116 is silver, copper, aluminium, platinum, graphene, carbon nanotube, ITO, FTO or AZO.Certainly, electrode layer
116 can also be by being formed by curing after silver paste or copper slurry coating, and electrode layer 116 is inevitably containing other materials in slurry at this time
Material.Preferably, electrode layer 116 and conductive layer 114 are integrally formed.Preferably, when the material of conductive layer 114 is graphene, electricity
The material of pole layer 116 is also graphene, and electrode layer 116 and conductive layer 114 are integrally formed.It, will be electric by the way that electrode layer 116 is arranged
Pole layer 116 is applied to material and is made of single-layer graphene on conductive layer 114 can to make heating film 110 in the voltage of≤12V
Lower work can further decrease operating voltage if the material of conductive layer 114 is multi-layer graphene.
Further, the positive bus bar 1162a of electrode layer 116, anode in electrode 1162b, negative bus bar 1164a and
Electrode 1164b can be same material in cathode, or not same material.
Second insulating layer 118 is formed in the surface of electrode layer 116.The material of second insulating layer 118 is glass or polymerization
Object.Preferably, polymer PET, PVC, PE, PMMA, PVDF, PANI or PC.Preferably, second insulating layer 118 with a thickness of
10 μm~125 μm.
Protective layer 120 is formed in the surface of the first insulating layer 112.Protective layer 120 is by the good insulating materials system of thermal conductivity
At.
Thermal insulation layer 130 is formed in the surface of second insulating layer 118.Thermal insulation layer 130 is made of the good material of heat-proof quality.
It should be noted that thermal insulation layer 130 and desk etc. contact when due to using, it is therefore preferred that thermal insulation layer 130 is far from the second insulation
One side surface of layer 118 is formed with anti-slip layer (figure does not regard).Preferably, the material of anti-slip layer is gel.
Please refer to Fig. 1 and Fig. 2, electrode layer of the power supply unit 150 by connecting line (figure does not regard) with heating film 110
116 electrical connections.Power supply unit 150 is for being powered heating film 110, and specifically in the present embodiment, power supply unit 150 is
Packaged type power supply, such as lithium battery.Certainly in other embodiments, power supply unit 150 or converter, by 220V
Voltage is converted to low-voltage and is exported.Power supply unit 150 is contained in cylinder 122.
Power switch 170 is electrically connected with power supply unit 150 and electrode layer 116 simultaneously, for controlling 150 pairs of electricity of power supply unit
Whether the power supply of pole layer 116.
Temperature control switch 180 is electrically connected with power supply unit 150 and electrode layer 116, for controlling power supply unit 150 to electrode layer
The voltage levels of 116 outputs, to control the heating temperature of conductive layer 114.
Power switch 170 and temperature control switch 180 are set on lid 124.Certainly, in other embodiments, power switch
170 and temperature control switch 180 also can be set on cylinder 122, or individual control piece is used, by power supply unit 150, power supply
Switch 170 and temperature control switch 180 are integrated in control piece.
Further, charging interface 190 is additionally provided on warming sheet 10 to charge.In present embodiment, charging
Mouth 190 is set on the side wall of cylinder 122, and certainly in other embodiments, charging interface 190 can also be separately set in and take
The other positions of warm piece 10, or be set up directly in power supply unit 150.
Preferably, in order to obtain good temperature uniformity at low voltage, for the special construction of electrode layer 116,
The temperature difference, initial temperature, supply voltage, spacing and conduction in adjacent anode in electrode 1162b and cathode between electrode 1164b
The square resistance of layer 114 meets following formula：
T=kU2/d2R+t (1)
In formula (1)：
T --- initial temperature, unit are DEG C；
T --- the final temperature difference of heating film, unit are DEG C；
U --- supply voltage, unit V, U≤12V；
D --- the spacing in adjacent anode in electrode 1162b and cathode between electrode 1164b, unit cm are adjacent
Spacing in anode in electrode 1162b and cathode between electrode 1164b according to it is conductive it is laminated on distance computation；
R --- conductive layer square resistance, unit are Ω/；
K --- constant, value range 10-200, k value range is according to the coefficient of conductivity meeting between heating film and air
Different, the coefficient of conductivity between heating film and air is inversely proportional.
Further, in order to guarantee the uniformity of 10 heating temperature of warming sheet, positive bus bar 1162a and negative bus bar
The width and thickness of 1162b need to consider the current carrying capacity and resistivity of material therefor, and resistivity wants sufficiently small, to reduce just
Voltage drop on pole busbar 1162a and negative bus bar 1162b guarantees in anode electrode 1164b in electrode 1162b and cathode
Different location ceiling voltage and the minimum voltage difference that positive bus bar 1162a or negative bus bar 1162b is arranged in are no more than
10%, and to determine that positive bus bar 1162a and negative bus bar 1162b sectional area have to be larger than a certain for current carrying capacity
Numerical value just can guarantee that positive bus bar 1162a and negative bus bar 1162b are not burned out, and there are following formula (2)：
n(n+1)lρl/ WHR < 1/5 (2)
Wherein：
N --- the space-number that electrode 1164b is generated in electrode 1162b and cathode in anode；
ρ1--- positive bus bar 1162a and negative bus bar 1162b resistivity of material, unit are Ω m；
L --- in anode in electrode 1162b and cathode electrode 1164b length, unit m；
W --- positive bus bar 1162a and negative bus bar 1162b width, unit m；
H --- positive bus bar 1162a and negative bus bar 1162b thickness, unit m；
The square resistance of R --- conductive layer 114, unit are Ω/.
In above-mentioned formula, it is assumed that positive bus bar 1162a and negative bus bar 1162b material are identical, and width and thickness are equal
Identical, electrode 1162b is identical with the length of electrode 1164b in cathode in anode.
Equally, interior electrode also needs to guarantee current carrying capacity and considers that maximum voltage difference is no more than on same interior electrode
10%.There are following formula (3)：
nl2ρ2/ whLR < 1/5 (3)
Wherein：
N --- the space-number that electrode 1164b is generated in electrode 1162b and cathode in anode；
L --- in anode in electrode 1162b and cathode electrode 1164b length, unit m；
ρ2--- in anode in electrode 1162b and cathode the material of electrode 1164b resistivity, unit is Ω m；
W --- in anode in electrode 1162b and cathode electrode 1164b width, unit m；
H --- in anode in electrode 1162b and cathode electrode 1164b thickness, unit m；
L --- the length of positive bus bar 1162a and negative bus bar 1162b, unit m；
The square resistance of R --- conductive layer 114, unit are Ω/.
In above-mentioned formula, it is assumed that positive bus bar 1162a and negative bus bar 1162b size are identical, electrode in anode
The material of electrode 1164b, length, width and thickness are all the same in 1162b and cathode.
Above-mentioned warming sheet passes through electrode in electrode in setting anode and cathode, drop by using the electrode layer of special construction
Spacing between low adjacent interior electrode, so that being located at the electricity of the conductive layer in anode in electrode and cathode between electrode
Hinder it is smaller, so as to use lower power voltage supply, even if can reach and to heat rapidly using common lithium battery power supply
Purpose；Such as lithium battery connection of the connecting line of warming sheet and movable power source can be powered fever, battery electricity when use
Amount exhaust charged or replaced battery can Reusability, it is more environmentally friendly；When the material of conductive layer 114 is single-layer graphene
When, heating effect identical with traditional heating film can be obtained using the power voltage supply not higher than 1.5V；By changing electrode
In the area of the positive bus bar 1162a and negative bus bar 1164a of layer, anode in electrode 1162b and cathode electrode 1164b it
Between spacing meet different heating temperature demands so as to realize different heating powers.
The warming sheet of another embodiment is roughly the same with the structure of warming sheet 10, and difference is：Warming sheet 10 also wraps
Controller and wireless communicator are included, controller is electrically connected with electrode layer 116.Wireless communicator can receive control instruction, and will control
System instruction sends controller to, and controller controls the heating of heating film 110 according to control instruction.Control instruction is sent out by control terminal
It send.Control terminal includes at least one of remote controler, mobile phone, tablet computer, desktop computer and laptop.Control terminal is provided with
Infrared transceiver module, WIFI module or ZIGBEE module, control terminal pass through infrared transceiver module, WIFI module or ZIGBEE module
It is communicated with controller.Further, heating member 10 is additionally provided with the temperature sensor being electrically connected with the controller, to control
Device can be adjusted the heating temperature of heating film according to the temperature information that the temperature sensor received is collected.Further
, can also corresponding APP is installed on mobile phone with facilitate control heating film heating whether and heating temperature.
Referring to Fig. 5, the warming sheet of another embodiment is roughly the same with the structure of warming sheet 10, difference is：?
In embodiment illustrated, the heating film 210 of warming sheet includes the first insulating layer 212 stacked gradually, the first glue-line 213, leads
Electric layer 214, electrode layer 216, the second glue-line 217 and second insulating layer 218.Conductive layer 214 and the first insulating layer 212 pass through first
Glue-line 213 bonds, and second insulating layer 218 is bonded with electrode layer 216 by second insulating layer 218.Preferably, the first glue-line 213
Material be ultraviolet cured adhesive, hot melt adhesive or silica gel, the material of the second glue-line 217 is ultraviolet cured adhesive, hot melt adhesive or silicon
Glue.
In above-mentioned warming sheet, heating film 210 is prepared by the following steps：
Step S310, prefabricated board is provided, prefabricated board includes being used to prepare the base of electrode layer and being formed in substrate surface
Conductive layer 214.
Preferably, base is metal foil.Metal foil be copper foil, nickel foil or other metal foils, herein with no restrictions.
In the step, provided prefabricated board, conductive layer (such as graphene) is directly grown in base.
Step S320, the first insulating layer 212 is bonded to the conductive layer 214 of prefabricated board by the first glue-line 213.
Step S330, exposure mask is prepared on the surface of base, and base is etched, obtain electrode after removing exposure mask
Layer.
In the step, the design of the pattern of exposure mask electrode layer as needed.When etching process, exposure mask will be made
Prefabricated board be placed in etching solution, etching remove not by exposure mask protect base.
Preferably, the substance containing the electric conductivity that can improve conductive layer 214 in etching solution.
Step S340, second insulating layer 218 is bonded to the surface of electrode layer 216 by the second glue-line 217.
Preferably, the second glue-line 217 and second insulating layer 218 offer the positive electrode and negative electricity corresponding to electrode layer 216
The through-hole of pole is to make lead.
The preparation method of above-mentioned heating film 210 is relatively simple, saves time and materials cost, meanwhile, using metal foil system
Standby electrode layer, good conductivity are conducive to the control for heating the uniformity of film temperature.
Preferably, the first glue-line 213 and the second glue-line 217 with a thickness of 25~75 μm.
Referring to Fig. 6, the warming sheet of another embodiment is roughly the same with the structure of warming sheet 10, difference is：?
In embodiment illustrated, the heating film 410 of warming sheet includes the first insulating layer 412, the conductive layer 414, electrode stacked gradually
The 416, second glue-line 417 of layer and second insulating layer 418.Second insulating layer 418 and electrode layer 416 are viscous by second insulating layer 418
It closes.Preferably, the material of the second glue-line 417 is ultraviolet cured adhesive, hot melt adhesive or silica gel.
In above-mentioned warming sheet, heating film 410 is prepared by the following steps：
Step S510, electrode layer is prepared in 144 surface printing of conductive layer or vapor deposition for being formed in 412 surface of the first insulating layer
416。
Step S520, second insulating layer 418 is bonded to the surface of electrode layer 416 by the second glue-line 417.
Preferably, the second glue-line 417 and second insulating layer 418 offer the positive electrode and negative electricity corresponding to electrode layer 416
The through-hole of pole is to make lead.
The preparation method of above-mentioned heating film 410 is relatively simple.
Referring to Fig. 7, the warming sheet of another embodiment is roughly the same with the structure of warming sheet 10, difference is：?
In embodiment illustrated, the heating film 510 of warming sheet include the first insulating layer 512 stacked gradually, auxiliary electrode layer 513,
Conductive layer 514, electrode layer 516 and second insulating layer 518.Auxiliary electrode layer 513 is connect with conductive layer electricity 514.Auxiliary electrode layer
513 structure is identical as the structure of electrode layer 516.Auxiliary electrode layer 513 includes auxiliary positive electrode (figure does not regard) and auxiliary negative electricity
Pole (figure does not regard).Auxiliary positive electrode include auxiliary positive busbar and multiple auxiliary for extending from auxiliary positive busbar just
Extremely interior electrode.Auxiliary negative electrode includes auxiliary negative busbar and multiple auxiliary negatives for extending from auxiliary negative busbar
Interior electrode.Electrode is arranged alternately and is spaced apart from each other with electrode in auxiliary negative in auxiliary positive.It is further preferred that auxiliary electrode
Electrode electrode in the projection of conductive layer 514 and the anode of electrode layer 516 in electrode and auxiliary negative in the auxiliary positive of layer 513
And electrode is mutually staggered in the projection of conductive layer in the cathode.
Referring to Fig. 8, the warming sheet of another embodiment is roughly the same with the structure of warming sheet 10, difference is：?
In embodiment illustrated, electrode layer 616 includes positive electrode 6162, the first negative electrode 6164 and the second negative electrode 6166.First
Negative electrode 6164 is connected with the second negative electrode 6166.Positive electrode 6162 includes positive bus bar 6162a and from positive bus bar
Electrode 6162b in multiple anodes that 6162a extends.Electrode 6162b has multiple in anode, electrode 6162b in multiple anodes
Extend from the side of positive bus bar 6162a.In the illustrated embodiment, electrode 6162b is linear type in anode
And vertical positive bus bar 6162a.
First negative electrode 6164 includes the first negative bus bar 6164a and extends from the first negative bus bar 6164a
Multiple first cathode in electrode 6164b.Second negative electrode includes the second negative bus bar 6166a and from the second negative bus bar
Electrode 6166b in multiple second cathode that 6166a extends.First negative bus bar 6164a and the second negative bus bar
6166a is linear type, and the first negative bus bar 6164a and the second negative bus bar 6166a are flat with positive bus bar 6162a
Row setting, the first negative bus bar 6164a are located on the same line and are spaced apart from each other with the second negative bus bar 6166a, and
The one end of first negative bus bar 6164a far from the second negative bus bar 6166a and one end of positive bus bar 6162a are substantially flat
Together, the other end of the one end far from the first negative bus bar 6164a and positive bus bar 6162a the second negative bus bar 6166a
It is substantially concordant.
The one end of electrode 6162b far from positive bus bar 6162a is close to the first negative bus bar 6164a or second in anode
Negative bus bar 6166a, and separately with the first negative bus bar 6164a or the second negative bus bar 6166a.In first cathode
From a side of the first negative bus bar 6164a electrode 6162a in anode, the electrode 6162a into anode extends electrode 6164b
And separately with electrode 6162a in anode, and in the first cathode electrode 6164b with corresponding to the first negative bus bar 6164a's
Electrode 6162b is arranged alternately in anode.Electrode 6166b is electric in anode from the second negative bus bar 6166a in second cathode
A side of pole 6162a electrode 6162a into anode extend and with electrode 6162a in anode separately, and electrode in the second cathode
6166b is arranged alternately with corresponding to electrode 6162b in the anode of the second negative bus bar 6166a.
It should be noted that the first negative electrode 6164 is not limited to connect with the second negative electrode 6166, can also parallel connection set
It sets.Positive electrode can also be multiple, multiple positive electrode serial or parallel connections.Negative electrode is not limited to two, or one or big
In 2.
Referring to Fig. 9, the warming sheet of another embodiment is roughly the same with the structure of warming sheet 10, difference is：?
In embodiment illustrated, the positive bus bar 7162a and negative bus bar 7164a of electrode layer 716 are linear.Cathode converges
It flows a 7162a and the interval positive bus bar 7164a is arranged and negative bus bar 7164a is along the extension side of positive bus bar 7162a
To extension.Electrode 7162b bends extension, electrode in anode from positive bus bar 7162a to negative bus bar 7164a in anode
The end of 7162b close to negative bus bar 7164a and with negative bus bar 7164a separately.Electrode 7164b is from cathode in cathode
Busbar 7164a is bent to positive bus bar 7162a to be extended, and the end of electrode 7164b is close to positive bus bar 7162a in cathode
And separately with positive bus bar.
Referring to Fig. 10, the warming sheet of another embodiment is roughly the same with the structure of warming sheet 10, difference is：?
In embodiment illustrated, positive bus bar 8162a and negative bus bar 8164a are arc and interval setting, anode confluence
8162a and negative bus bar 8164a encloses and is set as circular ring shape.Electrode 8162a is lateral from positive bus bar 8162a in anode
The inside of negative bus bar 8162b extends, and the end of electrode 8162b is converged close to negative bus bar 8164a and with cathode in anode
Flow a 8164a separately.The inside of electrode 8164b lateral positive bus bar 8162a from negative bus bar 8164a in cathode
Extend, in cathode the end of electrode 8164b close to positive bus bar 8162a and with positive bus bar separately.In the reality of diagram
It applies in mode, electrode 8164b is linear type in electrode 8162b and cathode in anode.
It should be noted that positive bus bar and negative bus bar are not limited to the shape that above-mentioned several embodiments are enumerated,
It may be other shapes；Electrode is also not necessarily limited to the shape enumerated for above-mentioned several embodiments in electrode and cathode in anode,
It can be other shapes, such as curved shape or waveform, as long as being arranged alternately electrode in anode with electrode in cathode, reduce
Spacing in anode in electrode and cathode between electrode.
It is appreciated that positive electrode and negative electrode can also be respectively set in the two sides of conductive layer, positive electrode and negative electrode exist
The projection of conductive layer is identical as the structure of conductive layer in above-described embodiment.
It is further illustrated below in conjunction with specific embodiment.
Embodiment 1：
Please refer to Fig. 4 and Fig. 5, conductive layer of the single-layer graphene as heating film, electrode layer is printed using silver paste.
1, one layer of graphene, graphene are shifted on 125 μm of area 150mm × 150mm thickness of PET (the first insulating layer)
Overdoping, sheet resistance are 250 Ω/；
2, ag paste electrode pattern, pattern form such as Fig. 4 institute are printed on the graphene shifted using screen printing apparatus
Showing, electrode spacing is 6mm in electrode and cathode in anode, electrode long 108mm, wide 1mm in electrode and cathode in anode, totally 15
Item, positive bus bar and the wide 8mm of negative bus bar, 25 μm of silver paste thickness；
3, the electrode printed is placed in baking oven and is toasted, solidify silver paste, baking temperature is 130 DEG C, and the time is
40min。
Initial temperature is room temperature (22 DEG C), and in such cases, lead is respectively connected the positive electrode of electrode layer and negative electrode
The positive and negative anodes of 5V power supply are connect, after tested, can reach stable state within 60 seconds, the mean temperature of heating film is up to 77.5 DEG C of left sides at this time
Right (room temperature is 22 DEG C).
Average heating power using heating film when 3.7V power voltage supply is 1500w/m2Left and right.
Preferably, further progress following steps：
4,50 μm of area 150mm × 150mm thickness of OCA glue is fit together with PET of the same area；
5, square hole is opened in the PET/OCA posted using laser cutting device, hole size is 5mm × 5mm, the position of aperture
It sets after guaranteeing that the PET/OCA is bonded with electrode layer case, bus bar termination exposes the electrode of 5mm × 5mm；
6, PET/OCA is bonded with electrode layer to behind good position；
7, go out to make lead in the electrode that aperture exposes；
In such cases, measuring heating film resistance is 2.7 Ω, and lead is separately connected to the positive and negative anodes of 5V power supply, after tested,
Can reach stable state within 60 seconds, Figure 11 show the heating film Temperature Distribution photo shot using thermal infrared imager, at this time plus
The mean temperature of hotting mask is up to 66 DEG C or so (room temperature is 22 DEG C).
Test result shows that the average heating power using heating film when 3.7V power voltage supply is 1300w/m2Left and right, and
It the use of traditional heating film average heating power without interior electrode is 5w/m when voltage is 3.7V2Left and right will reach new with us
The identical heating effect of the heating film of design need to be improved using voltage to 60V or so, this is considerably beyond human-body safety electricity
Pressure.
Embodiment 2：
The present embodiment uses conductive layer of two layers of graphene as heating film, and electrode layer is printed using silver paste.
1, two layers of graphene conduct is shifted on 125 μm of area 120mm × 120mm thickness of PET (the first insulating layer) to lead
Electric layer, overdoping, sheet resistance are 120 Ω/ to graphene；
2, ag paste electrode layer, pattern form such as Figure 10 institute are printed on the conductive layer shifted using screen printing apparatus
Show, busbar outside diameter 96mm, interior electrode spacing be 6mm, wide 1mm, the wide 8mm of busbar, 25 μm of silver paste thickness；
3, the electrode pattern printed is placed in baking oven and is toasted, solidify silver paste, baking temperature is 130 DEG C, and the time is
40min。
In such cases, lead is separately connected to the positive and negative anodes of 5V power supply, after tested, 60S can reach stable state, this
When heating film mean temperature up to 137.7 DEG C or so (initial temperatures be 22 DEG C of room temperature).
Test result shows, using the electrode design scheme that we invent, using when 3.7V power voltage supply heating film it is flat
Equal heating power is 3168w/m2Left and right.
Preferably, further progress following steps：
4,50 μm of area 120mm × 120mm thickness of OCA glue is fit together with PET of the same area；
5, square hole is opened in the PET/OCA posted using laser cutting device, hole size is 5mm × 5mm, the position of aperture
It sets after guaranteeing that the PET/OCA is bonded with electrode layer, bus bar termination exposes the electrode of 5mm × 5mm；
6, PET/OCA is bonded with electrode layer to behind good position；
7, go out to make lead in the electrode that aperture exposes；
In such cases, measuring heating film resistance is 2 Ω, and lead is separately connected to the positive and negative anodes of 5V power supply, after tested,
40S clock can reach stable state, and Figure 12 show the heating film Temperature Distribution photo shot using thermal infrared imager, at this time plus
The mean temperature of hotting mask is up to 90.9 DEG C or so (room temperature is 22 DEG C).
Test result shows that the average heating power using heating film when 3.7V power voltage supply is 1300w/m2Left and right, and
It the use of traditional heating film average heating power without interior electrode is 5w/m when voltage is 3.7V2Left and right will reach new with us
The identical heating effect of the heating film of design need to be improved using voltage to 60V or so, this is considerably beyond human-body safety electricity
Pressure.
Embodiment 3：
Referring to Fig. 8, conductive layer of the single-layer graphene as heating film, preparation process are as follows：
1, the copper foil of graphene (for graphene through overdoping, sheet resistance is 250 Ω/) will have been grown and size be 150mm ×
300mm is combined with a thickness of 125 μm of PET by UV sticker, and copper foil size is 140mm × 280mm, with a thickness of 25 μm；
2, by UV adhesive curing, wavelength 365nm, energy 1000mJ/cm2；
3, peelable glue exposure mask is printed on the copper foil posted using screen printing apparatus, pattern form as shown in figure 8, this
When, it is equivalent to heating film and is divided into two, form the two pieces of concatenated effects of heating film in left and right, it is actual to be halved using voltage, it is interior
Electrode spacing is 3mm, long 108mm, wide 1mm, totally 32, the wide 8mm of busbar, 25 μm of copper thickness；
4, the electrode pattern printed is placed in baking oven and is toasted, make peelable adhesive curing, baking temperature is 135 DEG C, the time
For 40min；
5, the sample after toasting is placed in 30% FeCl3It is etched in etching liquid, drying is washed after etching, takes electrode off
The peelable glue on surface.
In such cases, measuring heating film resistance is 1.7 Ω, and lead is separately connected to the positive and negative anodes of 3.7V lithium ion battery
(heating film relative to half is 1.85V), after tested, the temperature of heating film is up to 46 DEG C or so (room temperatures 22 after 30S stablizes
℃)。
Test result is shown, using electrode design scheme of the invention, (is applied to two electrodes using 3.7V voltage
Voltage is 1.85V) power supply when heating film average heating power be 1521w/m2Left and right.
Preferably, further progress following steps：
6,50 μm of area 150mm × 300mm thickness of OCA glue is fit together with PET of the same area；
7, square hole is opened in the PET/OCA posted using laser cutting device, hole size is 5mm × 5mm, the position of aperture
It sets after guaranteeing that the PET/OCA is bonded with electrode layer, bus bar termination exposes the electrode of 5mm × 5mm；
8, PET/OCA is bonded with electrode pattern to behind good position；
9, go out to make lead in the electrode that aperture exposes；
Measuring heating film resistance is 2.5 Ω, by lead be separately connected 3.7V (practical using voltage be equivalent to 1.85V) lithium from
The positive and negative anodes of sub- battery, after tested, the temperature of heating film is up to 45 DEG C or so (room temperature is 22 DEG C), coincidence formula T after 70S stablizes
=kU2/d2R+t (K=151).
Embodiment 4：
The present embodiment uses conductive layer of the ito thin film as heating film, and silver paste is as electrode, and design is referring to Fig. 4, system
Standby technique is as follows：
It 1, the use of screen printing apparatus is having a size of 150mm × 150mm in sheet resistance, the ito thin film that sheet resistance is 150 Ω is (square
Resistance be 400 Ω/) on print ag paste electrode pattern, pattern form as shown in figure 4, interior electrode spacing be 6mm, long 108mm, it is wide
1mm, totally 15, the wide 8mm of busbar, 25 μm of silver paste thickness；
2, the electrode pattern printed is placed in baking oven and is toasted, solidify silver paste, baking temperature is 130 DEG C, and the time is
40min。
3,50 μm of area 150mm × 150mm thickness of OCA glue is fit together with PET of the same area；
4, square hole is opened in the PET/OCA posted using laser cutting device, hole size is 5mm × 5mm, the position of aperture
It sets after guaranteeing that the PET/OCA is bonded with electrode layer, bus bar termination exposes the electrode of 5mm × 5mm；
5, PET/OCA is bonded with electrode pattern to behind good position；
6, go out to make lead in the electrode that aperture exposes；
In such cases, measuring heating film resistance is 5 Ω, and lead is separately connected to the positive and negative anodes of 12V power supply, after tested,
55S can reach stable state, and the mean temperature of heating film is up to 92 DEG C or so (room temperature is 22 DEG C), coincidence formula T=at this time
kU2/d2R+t (K=70).
Embodiment 5：
The present embodiment transparency conducting layer uses single-layer graphene (250 Ω/), and electrode layer uses 10 layers of graphene, preparation
Method is roughly the same with embodiment 1, the difference is that：By the way of continuing to shift graphene on graphene film, transfer
To 11th layer, stop transfer, 10 layers of graphene above is then etched into patterned electrode layer, or using directly growth
Multi-layer graphene, then patterned electrode layer is made, the pattern of the present embodiment electrode layer is as shown in figure 4, interior electrode spacing is
3mm, long 108mm, wide 1mm, totally 15, the wide 8mm of busbar, electrode (10 layers of graphene) thickness 35nm.
In such cases, measuring heating film resistance is 2 Ω, and lead is separately connected to the positive and negative anodes of 1.5V power supply, after tested,
85S can reach stable state, and the mean temperature of heating film is up to 34 DEG C or so (room temperature is 22 DEG C), coincidence formula T=at this time
kU2/d2R+t (K=120).
Embodiment 6：
The present embodiment is used as conductive layer using 4 layers of graphene (62.5 Ω/), and the material of electrode layer is ITO, preparation method
It is roughly the same with embodiment 1, the difference is that：Using when ITO is printed on conductive layer, electrode patterning design referring to
Figure 10, interior electrode spacing be 4mm, wide 1mm, totally 16, the wide 8mm of busbar, 25 μm of silver paste thickness.
In such cases, measuring heating film resistance is 1.6 Ω, lead is separately connected to the positive and negative anodes of 7.5V power supply, through surveying
Examination, 100S can reach stable state, and the mean temperature of heating film meets public affairs up to 103 DEG C or so (room temperature is 22 DEG C) at this time
Formula T=kU2/d2R+t (K=90).
Embodiment 7：
Embodiment 7 is roughly the same with embodiment 3, and difference is：The structure of electrode layer is as shown in figure 4, interior electrode spacing is
3mm, long 108mm, wide 1mm, totally 115, the wide 8mm of busbar, 25 μm of copper platinum thickness.
In such cases, measuring heating film resistance is 1.7 Ω, lead is separately connected to the positive and negative anodes of 12V power supply, through surveying
Examination, 100S can reach stable state, and the mean temperature of heating film meets public affairs up to 226 DEG C or so (room temperature is 22 DEG C) at this time
Formula T=kU2/d2R+t (K=32).
Embodiment 8：
Embodiment 8 is roughly the same with embodiment 1, and difference is：Electrode layer is made of copper foil, electrode layer structure such as Figure 10 institute
Show, interior electrode spacing be 2mm, long 108mm, wide 1mm, totally 16, the wide 8mm of busbar, 25 μm of copper thickness.With single-layer graphene
The sheet resistance of conductive layer as material is 250 Ω/.
In such cases, measuring heating film resistance is 2 Ω, and lead is separately connected to the positive and negative anodes of 3.7V power supply, after tested,
30S can reach stable state, and the mean temperature of heating film is up to 143.8 DEG C or so (room temperature is 22 DEG C), coincidence formula T at this time
=kU2/d2R+t (K=89).
Embodiment 9：
The present embodiment uses the two sides that positive electrode and negative electrode are separately positioned in conductive layer, and positive electrode and negative electrode are being led
As shown in figure 4, the material of conductive layer uses single-layer graphene, (for sheet resistance for 250 Ω/), electrode uses 5-10 layers for the projection of electric layer
Graphene or with a thickness of 10-30 μm of copper foil, wherein positive and negative adjacent inner electrodes spacing is 4mm, long 108mm, wide 1mm, altogether
15, the wide 8mm of busbar.
In such cases, measuring heating film resistance is 2.1 Ω, lead is separately connected to the positive and negative anodes of 7.5V power supply, through surveying
Examination, 30S can reach stable state, and the mean temperature of heating film is up to 210 DEG C or so (room temperature is 22 DEG C), coincidence formula at this time
T=kU2/d2R+t (K=134).
Embodiment 10：
Embodiment 10 is roughly the same with embodiment 3, and difference is：The structure of electrode layer is as shown in figure 8, conductive layer uses 6
Layer graphene (sheet resistance is 41.6 Ω/), electrode layer is made of copper foil.Interior electrode spacing be 3mm, wide 1mm, totally 9, busbar
Wide 8mm, 25 μm of copper thickness.
In such cases, measuring heating film resistance is 1.9 Ω, lead is separately connected to the positive and negative anodes of 1.5V power supply, through surveying
Examination, 30S can reach stable state, and the mean temperature of heating film meets public affairs up to 86.3 DEG C or so (room temperature is 22 DEG C) at this time
Formula T=kU2/d2R+t (K=107).
Embodiment 11：
Embodiment 11 is roughly the same with embodiment 1, and difference is：Interior electrode and busbar use different materials, metal
Material of the platinum as the material of busbar and 10 layers of graphene as interior electrode.Material of the single-layer graphene as transparency conducting layer
Material (sheet resistance is 250 Ω/).The structure of electrode layer as shown in figure 4, electrode spacing is 5mm, long 108mm, wide 1mm in graphene,
Totally 32, the wide 8mm of busbar, 25 μm of thickness.
In such cases, measuring heating film resistance is 1.9 Ω, lead is separately connected to the positive and negative anodes of 12V power supply, through surveying
Examination, 30S can reach stable state, and the mean temperature of heating film is up to 243 DEG C or so (room temperature is 22 DEG C), coincidence formula at this time
T=kU2/d2R+t (K=96).
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of warming sheet, which is characterized in that including housing and the heating film being contained in the housing, the heating film packet
It includes：
First insulating layer；
Conductive layer is formed in the surface of first insulating layer；
Electrode layer is formed in the surface of the conductive layer and is electrically connected with the conductive layer, the electrode layer include positive electrode and
Negative electrode, the positive electrode include positive bus bar and from the positive bus bar extend it is multiple anode in electrode, institute
Stating negative electrode includes negative bus bar and from electrode in multiple cathode that the negative bus bar is extended, electricity in the anode
Pole is arranged alternately and is spaced apart from each other with electrode in the cathode；And
Second insulating layer is formed in the surface of the electrode layer；
The warming sheet further includes the connecting line being electrically connected with the electrode layer of the heating film；
The warming sheet further includes power supply unit, power switch and temperature control switch, the power supply unit by the connecting line with
The electrode layer of the heating film is electrically connected；The power switch is electrically connected with the power supply unit and electrode layer simultaneously；The control
Temperature switch is electrically connected with the power supply unit and electrode layer；
Meet following formula between the conductive layer, electrode layer and power supply unit：
T=kU2/(d2R)+t, wherein t is the initial temperature of the heating film, and unit is DEG C；T is the most final temperature of the heating film
Degree, unit are DEG C；U is the supply voltage of the power supply unit, unit V, U≤12V；D is electrode and cathode in adjacent positive
Spacing between interior electrode, unit cm；R is the square resistance of the conductive layer, and unit is Ω/；K is constant, value model
Enclosing is 10~200, and unit is (m2·℃)/W。
2. warming sheet according to claim 1, which is characterized in that the positive bus bar and the negative bus bar are
Linear and be arranged in parallel, in multiple anodes electrode from the positive bus bar close to a side of the negative bus bar to
The negative bus bar extends, and electrode is from the negative bus bar close to the side of the positive bus bar in multiple cathode
Extend to the positive bus bar.
3. warming sheet according to claim 1, which is characterized in that the positive bus bar is with the negative bus bar
Linear, the negative bus bar and the positive bus bar interval are arranged and the negative bus bar is along the positive bus bar
Extending direction extend, electrode bend extension from the positive bus bar to the negative bus bar in the anode, described to bear
Extremely interior electrode bends extension from the negative bus bar to the positive bus bar.
4. warming sheet according to claim 1, which is characterized in that the positive bus bar and the negative bus bar are
Arc and interval setting, it is described anode in electrode prolong on the inside of the lateral negative bus bar from the positive bus bar
It stretches, the inside of electrode lateral positive bus bar from the negative bus bar extends in the cathode.
5. warming sheet according to claim 1, which is characterized in that the heating film further includes being set to first insulation
Auxiliary electrode layer between layer and the conductive layer, the auxiliary electrode layer are electrically connected with the conductive layer, the auxiliary electrode
Layer includes auxiliary positive electrode and auxiliary negative electrode, and the auxiliary positive electrode includes auxiliary positive busbar and from the auxiliary positive
Electrode in multiple auxiliary positives that busbar extends, the auxiliary negative electrode include auxiliary negative busbar and from described auxiliary
Electrode in the multiple auxiliary negatives for helping negative bus bar to extend, electricity in electrode and the auxiliary negative in the auxiliary positive
Pole is arranged alternately and is spaced apart from each other.
6. warming sheet according to claim 5, which is characterized in that electrode and institute in the auxiliary positive of the auxiliary electrode layer
Stating electrode in auxiliary negative, electrode exists in electrode and the cathode in the projection of the conductive layer and the anode of the electrode layer
The projection of the conductive layer mutually staggers.
7. warming sheet according to claim 1, which is characterized in that the heating film further includes the first glue-line and the second glue
Layer, first glue-line are set between first insulating layer and the conductive layer, and second glue-line is set to the electricity
Between pole layer and the second insulating layer.
8. warming sheet according to claim 1, which is characterized in that the positive electrode has multiple, multiple positive electrode strings
Connection；
And/or the negative electrode has multiple, multiple negative electrode series connection.
9. warming sheet according to claim 1, which is characterized in that further include controller and wireless communicator, the control
Device is electrically connected with the electrode layer, and the wireless communicator can receive control instruction, and the control instruction is sent to described
Controller, the controller control the heating of the heating film according to the control instruction.
10. a kind of warming sheet, which is characterized in that including housing and the heating film being contained in the housing, the heating film packet
It includes：
First insulating layer；
First electrode layer is formed in the surface of first insulating layer, and the first electrode layer includes positive electrode, the positive electrode
Including positive bus bar and from the positive bus bar extend it is multiple anode in electrode,
Conductive layer, is formed in the surface of the first electrode layer, and the conductive layer is electrically connected with the first electrode layer；
The second electrode lay is formed in the surface of the conductive layer and is electrically connected with the conductive layer, and the second electrode lay includes
Negative electrode, the negative electrode include negative bus bar and from electrode, institute in multiple cathode that the negative bus bar is extended
Electrode in anode is stated to be arranged alternately and be spaced apart from each other in the projection of the conductive layer with electrode in the cathode；And
Second insulating layer is formed in the surface of the second electrode lay；
The warming sheet further includes the connecting line being electrically connected with the first electrode layer of the heating film and the second electrode lay；
The warming sheet further includes power supply unit, power switch and temperature control switch, the power supply unit by the connecting line with
The first electrode layer and the second electrode lay of the heating film are electrically connected；The power switch simultaneously with the power supply unit, first
Electrode layer and the second electrode lay electrical connection；The temperature control switch and the power supply unit, first electrode layer and the second electrode lay electricity
Connection；
Meet following formula between the conductive layer, first electrode layer, the second electrode lay and power supply unit：
T=kU2/(d2R)+t, wherein t is the initial temperature of the heating film, and unit is DEG C；T is the most final temperature of the heating film
Degree, unit are DEG C；U is the supply voltage of the power supply unit, unit V, U≤12V；D is electrode and cathode in adjacent positive
Spacing of the interior electrode between the projection of the conductive layer, unit cm；R be the conductive layer square resistance, unit be Ω/
□；K is constant, and value range is 10~200, and unit is (m2·℃)/W。
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| CH717856A1 (en) * | 2020-09-15 | 2022-03-15 | Graphenaton Tech Sa | Self-regulated heating film. |
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| CN107396465A (en) * | 2017-08-17 | 2017-11-24 | 成都三乙医疗科技有限公司 | Portable graphene electric heater unit |
| CN110553395B (en) * | 2019-08-13 | 2020-12-25 | 临沂文衡信息技术有限公司 | Heating assembly |
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| CN104902594A (en) * | 2015-06-01 | 2015-09-09 | 冯冠平 | Intelligent temperature control thermal underwear |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH717856A1 (en) * | 2020-09-15 | 2022-03-15 | Graphenaton Tech Sa | Self-regulated heating film. |
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