CN218387943U

CN218387943U - Flexible heating plate

Info

Publication number: CN218387943U
Application number: CN202221342176.1U
Authority: CN
Inventors: 裴翔; 汪伟; 刘兆平
Original assignee: Ningbo Routan Electronic Technology Co ltd
Current assignee: Ningbo Routan Electronic Technology Co ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2023-01-24
Anticipated expiration: 2032-05-31

Abstract

The utility model relates to the field of flexible devices, in particular to a flexible heating sheet, which comprises a heating main body, a lead and a packaging strip; the heating main body sequentially comprises a first flexible coating cloth, an electrode strip, a heating material layer and a second flexible coating cloth from bottom to top; the heating main body comprises an electric connection window, and the electric connection window is a through hole which is arranged above the electrode strip and enables the electrode strip to be exposed on the upper surface of the heating main body; the lead electrically connects the electrode strip with an external circuit through the electric connection window; the packaging material layer is arranged at the edge of the heating main body and used for sealing the edge of the heating main body. The utility model increases the general use and improves the connection strength between the lead and the electrode strip; in addition, the packaging material layer is used for sealing the edge of the heating main body, so that the possibility that the heating material layer falls from the heating main body is eliminated, and the working stability of the device is enhanced.

Description

Flexible heating plate

Technical Field

The utility model relates to a flexible device field especially relates to a flexible heating plate.

Background

With the advancement of technology and the development of materials, more and more people are paying attention to and discussing the practicability and application fields of the heatable flexible material. At present, the theory of operation of most flexible heating plate will generate heat the layer through the insulating layer and keep apart to for generating heat the layer power supply through external power source, the electric current flows in generating heat the layer, turns into heat energy with the electric energy.

In the prior art, the lead wire of the electric connection heating layer usually stretches out from the clearance of the insulating layer of the encapsulation heating layer, and this has caused the hidden danger to the encapsulation compactness of insulating layer, simultaneously, because flexible material needs a large amount of reciprocal buckles in the in-process of in-service use, this has just further destroyed between insulating layer and the insulating layer, the insulating layer with generate heat the stability of being connected between the layer, also make simultaneously to generate heat and take place relative displacement between layer and the insulating layer more easily, the layer that generates heat appears at last exposes outside, or the condition that drops out, causes the potential safety hazard.

Therefore, how to find a flexible heating layer that ensures the stable encapsulation of the heating layer and prevents the exposure of the conductive structure makes those skilled in the art urgently need to solve the problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a flexible heating plate to the material that generates heat among the flexible heating material spills among the solution prior art, causes the problem of incident.

In order to solve the technical problem, the utility model provides a flexible heating plate, which comprises a heating main body, a lead and a packaging strip;

the heating main body sequentially comprises a first flexible coated fabric, an electrode strip, a heating material layer and a second flexible coated fabric from bottom to top;

the heating main body comprises an electric connection window, and the electric connection window is a through hole which is arranged above the electrode strip and enables the electrode strip to be exposed on the upper surface of the heating main body;

the lead electrically connects the electrode strip with an external circuit through the electrical connection window;

the packaging material layer is arranged at the edge of the heating main body and used for sealing the edge of the heating main body.

Optionally, in the flexible heating sheet, the electrode strip includes an extraction electrode extending out of the heating material layer to cover, and the electrical connection window is disposed above the extraction electrode.

Optionally, in the flexible heat patch, the electrical connection window is covered by the packaging material layer.

Optionally, in the flexible heating sheet, the wire is a folded wire;

the folded angle of the folded angle conducting wire is arranged at the position of the electric connection window, and the extending direction of the conducting wire extending out of the electric connection window is the same as the extending direction of the heating main body through the folded angle.

Optionally, in the flexible heating sheet, the heating main body is a sheet structure produced roll to roll, and the packaging material is disposed on a slurry cutting edge of the heating main body.

Optionally, in the flexible heating sheet, the heat generating material layer is a paste layer or a film.

Optionally, in the flexible heating sheet, the heat generating material layer includes at least one of a graphene layer, a graphite layer, and a carbon nanotube layer.

Optionally, in the flexible heating sheet, the connection manner between the electrode strip and the lead wire includes at least one of welding, riveting, and conductive adhesive bonding.

Optionally, in the flexible heating sheet, an inward surface of the first flexible coated fabric and/or an inward surface of the second flexible coated fabric is provided with an adhesive layer.

Optionally, in the flexible heating sheet, the flexible heating sheet further includes an internal series line, and the flexible heating sheet includes at least three electrode strips;

the odd electrode strips are electrically connected through the internal serial connection line, and the even electrode strips are electrically connected through the internal serial connection line; the odd electrode strips and the even electrode strips are not connected by the internal serial connection line;

a first electrode of the external circuit is connected to a first main electrode bar in the odd-numbered electrode bars through the lead; and the second electrode of the external circuit is connected to the second main electrode bar in the even-numbered electrode bars through the lead.

The utility model provides a flexible heating sheet, which comprises a heating main body, a lead and a packaging strip; the heating main body sequentially comprises a first flexible coated fabric, an electrode strip, a heating material layer and a second flexible coated fabric from bottom to top; the heating main body comprises an electric connection window, and the electric connection window is a through hole which is arranged above the electrode strip and enables the electrode strip to be exposed on the upper surface of the heating main body; the lead electrically connects the electrode strip with an external circuit through the electrical connection window; the packaging material layer is arranged at the edge of the heating main body and used for sealing the edge of the heating main body.

In the utility model, the lead is connected with the electrode strip through the electric connection window and is arranged in the through hole, so that the selectivity of the connection mode of the lead and the electrode strip is greatly increased, the universality is increased, and meanwhile, the connection strength between the lead and the electrode strip is also improved due to the improvement of the connection area between the lead and the electrode strip; in addition, through the packaging material layer is right the main part that generates heat carries out the banding, has completely the heating material layer is followed the possibility that drops in the main part that generates heat has strengthened the job stabilization nature of device.

Drawings

In order to clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic top view of a flexible heating sheet according to an embodiment of the present invention;

fig. 2 is a schematic side view of an embodiment of a flexible heating sheet according to the present invention;

fig. 3 is a schematic top view of another embodiment of a flexible heating sheet according to the present invention;

fig. 4 is a schematic cross-sectional structure diagram of an embodiment of a flexible heating sheet according to the present invention.

Detailed Description

In order to make the technical field better understand the solution of the present invention, the following detailed description is given with reference to the accompanying drawings and the detailed description. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The core of the utility model is to provide a flexible heating sheet, the structural schematic diagram of one embodiment of which is shown in fig. 1 to fig. 2, which is called as the first embodiment, comprising a heating main body 10, a lead 20 and a packaging strip 30;

the heating main body 10 sequentially comprises a first flexible coated fabric 11, an electrode strip 13, a heating material layer 14 and a second flexible coated fabric 12 from bottom to top;

the heating main body 10 comprises an electrical connection window 15, wherein the electrical connection window 15 is a through hole which is arranged above the electrode strip 13 and exposes the electrode strip 13 to the upper surface of the heating main body 10;

the lead wire 20 electrically connects the electrode strip 13 with an external circuit through the electrical connection window 15;

the packaging material layer is disposed at the edge of the heating main body 10, and seals the edge of the heating main body 10.

Fig. 1 is a top view of the flexible heating sheet, wherein the first flexible coated fabric 11 is covered, and the projection of the first flexible coated fabric 11 at the viewing angle completely coincides with the second flexible coated fabric 12, so that it is not shown.

As a preferred embodiment, the electrode strip 13 includes a lead-out electrode extending beyond the heat-generating material layer 14, and the electrical connection window 15 is disposed above the lead-out electrode. Referring to fig. 2 and 4, fig. 2 is a structural side view of the package strip 30 before edge sealing, and fig. 4 is a sectional view after edge sealing, when the electrode strip 13 includes the extraction electrode, the electrical connection window 15 is a through hole penetrating through the second flexible coated fabric 12, and an area where the through hole is opened (i.e., the electrical connection window 15) is separately disposed from an area of the heating material layer 14, so that the heating material layer 14 is prevented from being damaged in the process of disposing the through hole, the structural integrity of the device is protected, and the yield of the finished flexible heating sheet is improved.

In addition, the electrical connection window 15 is covered by the packaging material layer, in other words, the packaging material layer, in addition to blocking the edge of the flexible heating sheet and preventing the internal structure of the heating body 10 from being exposed, also plays a role in protecting the electrical connection window 15 and preventing the wires 20 from being exposed, thereby improving the safety in use.

More closely, the wire 20 is a folded wire 20;

the bent angle of the bent angle wire 20 is disposed at the electrical connection window 15, and the extending direction of the wire 20 extending from the electrical connection window 15 is the same as the extending direction of the heat generating main body 10 through the bent angle.

The utility model provides a wire 20 is along the perpendicular to earlier jet out in the electric connection window 15 of flexible heating plate extending direction, turns to again, is on a parallel with the extending direction of flexible heating plate, consequently, if do not predetermine the dog-ear, can cause wire 20 to be in the stress concentration of corner, at the in-process of buckling repeatedly of flexible heating plate, lead to wire 20 to break easily, do among this embodiment wire 20 after installing predetermined dog-ear additional, alright avoid stress concentration's appearance to prolong wire 20's life promotes the safety in utilization of flexible heating plate simultaneously.

In addition, the heating main body 10 is a laminated structure produced in a roll-to-roll manner, and the packaging material is arranged on the slurry cutting edge of the heating main body 10. Roll-to-roll production is a production means with a very wide application range in a sheet structure, and is favored by various manufacturers due to its very high production efficiency, but in roll-to-roll production, the heating material layer 14 is usually disposed on the first flexible coated fabric 11 by roll-to-roll printing, however, in the process of cutting the printed body to obtain a single flexible heating sheet after roll-to-roll printing is finished, the heating material layer 14 (usually, a slurry layer due to printing setting) is also exposed at the cutting edge, and overflows out of the heating main body 10 by slight extrusion, so that in this embodiment, the slurry cutting edge is mainly blocked to ensure that the slurry of the heating material layer 14 does not overflow, and the use safety of the flexible heating sheet is improved.

Accordingly, the heat-generating material layer 14 is a paste layer or a film; the slurry layer is connected with the first flexible coated cloth 11 and the second flexible coated cloth 12 more tightly and is not easy to fall off; the thin film is stronger in ductility and more difficult to break in the repeated bending process, the service life of the device can be prolonged by the two means, the working stability is improved, and corresponding selection can be made according to actual conditions. Still further, the heating material layer 14 includes at least one of a graphene layer, a graphite layer, and a carbon nanotube layer, and the above materials may be a slurry layer or a film, such as a carbon nanotube film or a carbon nanotube slurry.

As a specific implementation mode, the electrode strip 13 with among the connected mode of wire 20 includes welding, riveting and the conducting resin laminating at least one, welding, riveting connection steadiness are better, and the conducting resin production efficiency is high, can select by oneself according to actual conditions, the utility model discloses do not limit here.

The inward surface of the first flexible coated fabric 11 and/or the inward surface of the second flexible coated fabric 12 are/is provided with an adhesive layer, and by further providing the adhesive layer, the connection stability of each layer in the heating main body can be improved, and the displacement between the first and second flexible coated fabrics 12 and the heating material layer 14 can be avoided to a certain extent, so that the heating material layer 14 is prevented from being exposed.

As a preferred embodiment, the flexible heating sheet further comprises an internal series line 16, and the flexible heating sheet comprises at least three electrode strips 13;

the odd-numbered electrode bars 13 are electrically connected through the internal serial connection line 16, and the even-numbered electrode bars 13 are electrically connected through the internal serial connection line 16; the odd-numbered electrode strips 13 are not connected with the even-numbered electrode strips 13 through the internal serial connection lines 16;

a first electrode of the external circuit is connected to a first main electrode bar 13 in the odd-numbered electrode bars 13 through the lead wire 20; the second electrode of the external circuit is connected to the second main electrode bar 13 of the even-numbered electrode bars 13 through the lead 20.

Referring to fig. 3, it is known that the heating principle of the flexible heating sheet is that current flows from a first electrode of an external circuit into a corresponding electrode strip 13, passes through a heating material layer 14, and then flows back to the second electrode after being collected by the remaining electrode strips 13, and when the flexible heating sheet includes more than two electrode strips 13, it is required to ensure that potentials of any two adjacent electrode strips 13 are different to ensure that current flows between any two adjacent electrode strips 13, and therefore, in the preferred embodiment, the electrode strips 13 are divided into two groups, that is, an odd-numbered electrode strip 13 (1, 3,5,7 \ 8230, roots) and an even-numbered electrode strip 13 (2, 4,6,8 \8230), starting from one end of the plurality of electrode strips 13 arranged in a first direction, and one of the two groups is selected as a main electrode strip 13 for direct connection with the external circuit, as the first main electrode bar 13 (may be the 1 st electrode bar 13) connected to the first electrode and the second main electrode bar 13 (may be the 2 nd electrode bar 13) connected to the second electrode, all odd-numbered electrode bars 13 and all even-numbered electrode bars 13 are electrically connected through the internal serial line 16, after that, all the potentials of the odd-numbered electrode bars 13 in the flexible heating sheet are the same as the first electrode, and all the potentials of the even-numbered electrode bars 13 are the same as the second electrode, so as to ensure that the potentials between any two adjacent electrode bars 13 are different, and a current can be formed, so that the heating material layer 14 between the two electrode bars 13 is electrically heated, in addition, although the preferred embodiment includes a plurality of electrode bars 13, only the first main electrode bar 13 and the second main electrode bar 13 are electrically connected to an external circuit, the number of the connecting points of the flexible heating sheet and the external circuit is only two as that of the conventional electric appliance, so that the circuit is more convenient to set, and the universality of the flexible heating sheet is improved. The flexible heating plate in the soil 3 only comprises 3 electrode strips 13, so that only the 1 st electrode strip 13 is connected with the 3 rd electrode strip 13 through the internal series connection line 16, and if the flexible heating plate comprises the 4 th electrode strip 13, the 2 nd electrode strip 13 is also connected with the 4 th electrode strip 13 through the internal series connection line 16.

The flexible heating sheet provided by the utility model comprises a heating main body 10, a lead 20 and a packaging strip 30; the heating main body 10 sequentially comprises a first flexible coated fabric 11, an electrode strip 13, a heating material layer 14 and a second flexible coated fabric 12 from bottom to top; the heating main body 10 comprises an electrical connection window 15, and the electrical connection window 15 is a through hole which is arranged above the electrode strip 13 and exposes the electrode strip 13 to the upper surface of the heating main body 10; the lead wire 20 electrically connects the electrode strip 13 with an external circuit through the electrical connection window 15; the packaging material layer is disposed at the edge of the heating main body 10, and seals the edge of the heating main body 10. In the utility model, the lead 20 is connected with the electrode strip 13 through the electric connection window 15, and the lead 20 is arranged in the through hole, so that the selectivity of the connection mode of the lead 20 and the electrode strip 13 is greatly increased, the universality is increased, and meanwhile, the connection strength between the lead 20 and the electrode strip 13 is also improved due to the increase of the connection area between the lead 20 and the electrode strip 13; in addition, the packaging material layer seals the edge of the heating main body 10, so that the possibility that the heating material layer 14 falls from the heating main body 10 is eliminated, and the working stability of the device is enhanced.

The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed in the embodiment corresponds to the method disclosed in the embodiment, so that the description is simple, and the relevant points can be referred to the description of the method part.

It is to be noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The flexible heating sheet provided by the utility model is introduced in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A flexible heating sheet is characterized by comprising a heating main body, a lead and a packaging material layer;

2. The flexible heat patch of claim 1, wherein the electrode strip comprises an extraction electrode extending beyond the layer of heat-generating material, the electrical connection window being disposed over the extraction electrode.

3. The flexible heat patch of claim 1, wherein the electrical connection window is covered by the layer of encapsulant material.

4. The flexible heat patch of claim 3, wherein the wire is a dog-ear wire;

the break angle of the break angle lead is arranged at the electric connection window, and the extending direction of the lead extending out of the electric connection window is the same as the extending direction of the heating main body through the break angle.

5. The flexible heating sheet according to claim 1, wherein the heat generating body is a sheet structure produced roll-to-roll, and the sealing material is disposed on a slurry cut edge of the heat generating body.

6. The flexible heat patch according to claim 1, wherein the heat-generating material layer is a paste layer or a film.

7. The flexible heat patch of claim 6, wherein the heat generating material layer comprises at least one of a graphene layer, a graphite layer, and a carbon nanotube layer.

8. The flexible heating sheet of claim 1, wherein the electrode strips are connected to the leads by at least one of welding, riveting, and adhesive bonding.

9. The flexible heat patch of claim 1, wherein an inward facing surface of the first flexible coating and/or an inward facing surface of the second flexible coating is provided with an adhesive layer.

10. A flexible heat patch according to any one of claims 1 to 9, further comprising an internal series line, the flexible heat patch comprising at least three of said electrode strips;