CN218124950U - Temperature-limiting graphene flexible electrothermal film - Google Patents

Abstract

The utility model discloses a limit for temperature graphite alkene flexible electric heat membrane relates to the electric heat membrane field of warming up, include: a lower encapsulation layer; the electric heating layer is arranged at the upper end of the lower packaging layer, a plurality of heating wires are arranged on the electric heating layer, each heating wire consists of a first graphene fiber and a second graphene fiber, and an electrode layer is arranged on the electric heating layer; the upper packaging layer is arranged at the upper end of the electric heating layer; the power inlet lead is electrically connected with the electrode layer; the temperature limiting assembly comprises a plurality of temperature collecting electrodes and a plurality of temperature control switches, and the first graphene fibers and the second graphene fibers are electrically connected with the temperature control switches. The utility model has the advantages that: adopt the first graphene fiber and the second graphene fiber constitution heater that mutually independent generates heat to limit the temperature subassembly and heat the limit for temperature, guaranteed the temperature stability in the zone of heating, reduce the cold and hot temperature variation range in the zone of heating, and then slow down the ageing speed of stratum basale, improve the life of electric heat membrane.

Description

Temperature-limiting graphene flexible electrothermal film

Technical Field

The utility model relates to a warm up the electric heat membrane field, specifically relate to a flexible electric heat membrane of limit for temperature graphite alkene.

Background

The electrothermal film is divided into high-temperature and low-temperature electrothermal films. The high-temperature electrothermal film is generally used for electronic appliances, military affairs and the like; the low-temperature electrothermal film is a semi-transparent polyester film which can generate heat after being electrified and is made by processing and hot-pressing conductive special printing ink and metal current-carrying strips between insulating polyester films. When the electric heating film is used as a heating body, heat is sent into a space in a radiation mode, so that a human body and an object are firstly warmed, and the comprehensive effect of the electric heating film is superior to that of a traditional convection heating mode. The realization of the limit for temperature function of current electric heat membrane, what adopt usually is that the circuit that directly cuts off the heating structure that corresponds the zone of heating under high temperature state switches on, and the temperature that makes the zone of heating starts the heating structure once more after dropping heats, makes the zone of heating be in continuous cold and hot inflation in-process, easily leads to the stratum basale accelerated ageing of electric heating layer, leads to the life reduction of electric heat membrane.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the temperature-limited graphene flexible electrothermal film is provided, and the technical scheme solves the problem that the service life of the electrothermal film is shortened due to the fact that the circuit which directly cuts off the heating structure corresponding to the heating area in a high-temperature state is normally switched on, the heating structure is started again to heat after the temperature of the heating area is reduced, the heating area is in a continuous cold and hot expansion process, and the basal layer of the electric heating area is easy to accelerate aging.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a temperature-limited graphene flexible electrothermal film, comprising:

a lower encapsulation layer;

the electric heating layer is arranged at the upper end of the lower packaging layer, a plurality of heating wires consisting of heating graphene fibers are uniformly arranged on the electric heating layer at equal intervals, each heating wire consists of a first graphene fiber and a second graphene fiber which are arranged in parallel, and an electrode layer is arranged on the electric heating layer;

the upper packaging layer is arranged at the upper end of the electric heating layer;

the power supply lead is electrically connected with the electrode layer;

the temperature limiting assembly comprises a plurality of temperature collecting electrodes and a plurality of temperature control switches, the temperature collecting electrodes are arranged at positions corresponding to the heating wires, and the first graphene fibers and the second graphene fibers are electrically connected with the temperature control switches.

Preferably, a plurality of the temperature control switches and a plurality of heating wires are arranged in a one-to-one correspondence manner, and the temperature control switches are electrically connected with the temperature acquisition electrodes corresponding to the heating wires.

Preferably, the lower packaging layer and the upper packaging layer have the same structure, and the lower packaging layer and the upper packaging layer are symmetrically arranged in opposite directions.

Preferably, go up the encapsulation layer including the layer of protecting against radiation, the layer of protecting against radiation sets up in last encapsulation layer inboard, the layer outside of protecting against radiation is provided with the acid-proof layer, the acid-proof layer outside is provided with the hydrophobic layer.

Preferably, the radiation protection in situ portion is provided with lays the radiation protection metal mesh that forms by the metal wire is crisscross, acidproof corrosion layer is BOPP, the hydrophobic layer is fluorine-containing silicon glass layer.

Preferably, an inner heat conduction hole is formed in the acid corrosion resistant layer, an outer heat conduction hole is formed in the hydrophobic layer, and the inner heat conduction hole and the outer heat conduction hole are arranged in a staggered mode.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses a heater is constituteed to first graphite alkene fibre and second graphite alkene fibre that mutually independent generates heat, when using, at first carry out the heating of switching on of the zone of heating of correspondence through wherein solitary first graphite alkene fibre or second graphite alkene fibre, detect the temperature that corresponds the zone of heating by the temperature acquisition electrode, when the temperature that corresponds the zone of heating risees to the temperature threshold value, close the graphite alkene fibrous on-state of current heating through temperature control switch, make the temperature decline of the zone of heating, and open switching on of another graphite alkene fibre, make it begin to heat up, make the temperature of the zone of heating fall to before the lower threshold value of optimum temperature, another graphite alkene fibre can heat the zone of heating, so reciprocal in turn, keep the zone of heating temperature electric heat membrane to be in between the optimum temperature, reduce the cold and hot temperature variation range of the zone of heating, and then slow down stratum basale ageing speed, improve the life of zone.

Drawings

Fig. 1 is a schematic structural view of an electric heating layer of the present invention;

FIG. 2 is an enlarged partial schematic view at A in FIG. 1;

FIG. 3 is a schematic diagram of the layered structure of the present invention;

fig. 4 is a connection block diagram of the temperature limiting assembly of the present invention.

The reference numbers in the figures are:

1. a lower encapsulation layer; 2. an electric heating layer; 201. a heater; 2011. a first graphene fiber; 2012. a second graphene fiber; 202. an electrode layer; 203. a temperature acquisition electrode; 3. an upper encapsulation layer; 4. an incoming wire; 5. a radiation protective layer; 6. an acid etching resistant layer; 601. an inner heat conduction hole; 7. a hydrophobic layer; 701. and an outer heat conduction hole.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

Referring to fig. 1 to 3, a temperature-limited graphene flexible electrothermal film is characterized by comprising:

a lower encapsulation layer 1;

the electric heating layer 2 is arranged at the upper end of the lower packaging layer 1, a plurality of heating wires 201 composed of heating graphene fibers are uniformly arranged on the electric heating layer 2 at equal intervals, each heating wire 201 is composed of a first graphene fiber 2011 and a second graphene fiber 2012 which are arranged in parallel, an electrode layer 202 is arranged on the electric heating layer 2, and the graphene fibers are strong in stability, high in temperature rise speed, high in thermal efficiency, resistant to high pressure and long in service life;

the upper packaging layer 3 is arranged at the upper end of the electric heating layer 2;

the power input lead 4 is electrically connected with the electrode layer 202;

temperature limit subassembly, temperature limit subassembly include a plurality of temperature acquisition electrodes 203 and a plurality of accuse temperature switch, and temperature acquisition electrodes 203 sets up in the position department that corresponds with heater 201, first graphite alkene fibre 2011 and second graphite alkene fibre 2012 and accuse temperature switch electric connection, and a plurality of accuse temperature switches set up with a plurality of heater 201 one-to-one, accuse temperature switch and correspondence the temperature acquisition electrodes 203 electric connection of heater 201 carries out the temperature acquisition of the corresponding zone of heating through temperature acquisition electrodes 203 to feed back to accuse temperature switch and regulate and control the state of switching on of first graphite alkene fibre 2011 and second graphite alkene fibre 2012, and then realize the limit for temperature in the electric heat membrane use.

The lower packaging layer 1 and the upper packaging layer 3 have the same structure, the lower packaging layer 1 and the upper packaging layer 3 are oppositely and symmetrically arranged, the upper packaging layer 3 comprises a radiation-proof layer 5, the radiation-proof layer 5 is arranged on the inner side of the upper packaging layer 3, an acid corrosion-resistant layer 6 is arranged on the outer side of the radiation-proof layer 5, a hydrophobic layer 7 is arranged on the outer side of the acid corrosion-resistant layer 6, a biphenyl polyimide film modifies polyimide, the crosslinking performance of the polyimide is improved, the polyimide has higher mechanical strength and good high temperature resistance, a radiation-proof metal net formed by metal wires in a staggered mode is arranged in the radiation-proof layer 5, the metal net can effectively shield electromagnetic radiation generated by heating wires in the working process, the acid corrosion-resistant layer 6 is BOPP, the BOPP is a multilayer co-extrusion film, polypropylene particles are co-extruded to form a sheet and then are stretched in two directions, the tensile strength is high, the barrier performance is good, the resin has high transparency, can effectively shield external acid corrosion damage, the hydrophobic layer 7 is a fluorine-containing silicon glass layer which is a hydrophobic anti-icing material with excellent performance, the water contact angle of the surface of a varnish coating prepared by the resin can reach more than 120 degrees, the resin has excellent hydrophobic effect, can avoid water mist generated on the surface, ensures dry interface, the inner heat conduction hole 601 is arranged inside the acid corrosion resistant layer 6, the outer heat conduction hole 701 is arranged inside the hydrophobic layer 7, the inner heat conduction hole 601 and the outer heat conduction hole 701 are arranged in a staggered mode, the heat of a heating layer can be quickly conducted to the surface layer by the inner heat conduction hole 601 and the outer heat conduction hole 701, the heating rate of the electrothermal film is improved, meanwhile, gas generated in the heating process can be discharged, the internal bubbling of a packaging layer structure is avoided, the use is influenced, and meanwhile, the inner heat conduction hole 601 and the outer heat conduction hole 701 which are arranged in a staggered mode can effectively prevent water from flowing into the electrothermal film, the safety of the electrothermal film is improved.

The utility model discloses a theory of operation does: firstly, conducting heating of a corresponding heating area is carried out through a first graphene fiber 2011 or a second graphene fiber 2012 which are independent, the temperature of the corresponding heating area is detected by a temperature acquisition electrode 203, when the temperature of the corresponding heating area is increased to a temperature threshold value, the temperature is fed back to a temperature control switch, the conducting state of the currently heated graphene fiber is closed through the temperature control switch, the temperature of the heating area is reduced, conducting of another graphene fiber is started, the heating area is heated, the temperature of the heating area is reduced to be higher than the lower threshold value of the optimal temperature, the heating area can be heated by the other graphene fiber, and the operation is alternately repeated in such a way, so that the temperature of the heating area is kept between the optimal temperatures.

To sum up, the utility model has the advantages that: adopt the first graphite alkene fibre and the second graphite alkene fibre that mutually independent generates heat to constitute the heater to limit the temperature subassembly and heat the limit for temperature, guaranteed the temperature stability in the zone of heating, reduce the cold and hot temperature variation range in the zone of heating, and then slow down the ageing speed of stratum basale, improve the life of electric heat membrane.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that all the embodiments and descriptions are provided in the present invention, and that various changes and modifications can be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides a limit for temperature graphite alkene flexible electric heat membrane which characterized in that includes:

a lower encapsulation layer (1);

the electric heating layer (2) is arranged at the upper end of the lower packaging layer (1), a plurality of heating wires (201) composed of heating graphene fibers are uniformly arranged on the electric heating layer (2) at equal intervals, the heating wires (201) are composed of first graphene fibers (2011) and second graphene fibers (2012) which are arranged in parallel, and an electrode layer (202) is arranged on the electric heating layer (2);

the upper packaging layer (3), the upper packaging layer (3) is arranged at the upper end of the electric heating layer (2);

the power supply lead (4), the power supply lead (4) is electrically connected with the electrode layer (202);

the temperature limit component comprises a plurality of temperature acquisition electrodes (203) and a plurality of temperature control switches, the temperature acquisition electrodes (203) are arranged at positions corresponding to the heating wires (201), and the first graphene fibers (2011) and the second graphene fibers (2012) are electrically connected with the temperature control switches.

2. The temperature-limited graphene flexible electrothermal film according to claim 1, characterized in that: a plurality of accuse temperature switch and a plurality of heater (201) one-to-one set up, accuse temperature switch with correspond temperature acquisition electrode (203) electric connection of heater (201).

3. The temperature-limited graphene flexible electrothermal film according to claim 1, characterized in that: the lower packaging layer (1) and the upper packaging layer (3) are identical in structure, and the lower packaging layer (1) and the upper packaging layer (3) are symmetrically arranged in opposite directions.

4. The temperature-limited graphene flexible electrothermal film according to claim 1, characterized in that: go up encapsulation layer (3) including radiation protection layer (5), radiation protection layer (5) set up in last encapsulation layer (3) inboard, the radiation protection layer (5) outside is provided with acid-resistant layer (6), the acid-resistant layer (6) outside is provided with hydrophobic layer (7).

5. The temperature-limited graphene flexible electrothermal film according to claim 4, wherein: the radiation protection layer (5) is internally provided with a radiation protection metal net formed by metal wires in a staggered mode, the acid corrosion resistant layer (6) is BOPP, and the hydrophobic layer (7) is a fluorine-containing silicon glass layer.

6. The temperature-limited graphene flexible electrothermal film according to claim 5, wherein: an inner heat conduction hole (601) is formed in the acid corrosion resistant layer (6), an outer heat conduction hole (701) is formed in the hydrophobic layer (7), and the inner heat conduction hole (601) and the outer heat conduction hole (701) are arranged in a staggered mode.

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