Carbon nanotube conductive film heating device, packaging method thereof and seat heating application

Abstract

The invention relates to a carbon nano tube conducting film heating device and a packaging method and seat heating application thereof, the carbon nano tube conducting film heating device comprises a bottom layer insulation protection layer, a bottom layer electrode, a carbon nano tube conducting film, a top layer electrode and a top layer insulation protection layer which are sequentially arranged from bottom to top, the bottom-layer electrode is electrically connected with the top-layer electrode through a conductive unit, the top-layer electrode supplies power to the carbon nanotube conductive film, and the carbon nanotube conductive film is heated after being electrified; the carbon nanotube conductive film has the advantages that the carbon nanotube conductive film adopts the TPU base material, so that the carbon nanotube conductive film is good in flexibility and high in comfort; films can be produced in batches and then cut into required shapes, and the cost is low; the carbon-based material is high in heating rate and low in power consumption; conductive films with different sheet resistances can be selected for arrangement according to different heating requirements.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a carbon nanotube conductive film heating device and a packaging method thereof and a seat heating application. Background Art

[0002] With the development of the automobile industry and the improvement of residents' consumption level, comfort has become one of the important evaluation indicators of automobiles. As the automobile parts that are in direct contact with the driver and passengers, the comfort level of automobile seats has an important impact on the evaluation of the overall comfort of the automobile. At present, most automobile seats are equipped with seat heating, but the current seat heating mostly adopts the resistance wire heating method with a low safety factor. Summary of the invention

[0003] In view of the above problems, the purpose of the present invention is to provide a carbon nanotube conductive film heating device and its packaging method and seat heating application, which are used for seat cushion heating to overcome the shortcomings of the above-mentioned prior art.

[0004] The present invention provides a carbon nanotube conductive film heating device, comprising: a bottom insulating protective layer, a bottom electrode, a carbon nanotube conductive film, a top electrode, and a top insulating protective layer arranged in sequence from bottom to top, the bottom electrode is connected to a power supply wire, the bottom electrode and the top electrode are electrically connected through a conductive unit, the top electrode supplies power to the carbon nanotube conductive film, and the carbon nanotube conductive film generates heat and increases in temperature after being energized.

[0005] As a preferred embodiment of the present invention, the carbon nanotube conductive film is a carbon nanotube single-sided conductive film, and the carbon nanotube conductive film is connected to a top electrode.

[0006] As a preferred embodiment of the present invention, the conductive unit includes: an avoidance hole opened on the carbon nanotube conductive film and connecting the bottom electrode and the top electrode, a conductive layer (conductive material) arranged in the avoidance hole, and an avoidance hole insulating layer arranged between the inner wall of the avoidance hole and the conductive layer.

[0007] As a preferred embodiment of the present invention, the conductive unit includes: a conductive nail and a nail hole opened on the carbon nanotube conductive film, the conductive nail passes through the nail hole to connect the bottom electrode and the top electrode, and a nail hole insulating layer is provided between the conductive nail and the nail hole.

[0008] As a preferred embodiment of the present invention, the conductive unit includes: avoidance grooves opened on the front side, one side, and the back side of the carbon nanotube conductive film, and a conductive sheet (conductive material) laid in the avoidance groove and connecting the bottom electrode and the top electrode.

[0009] As a preferred embodiment of the present invention, the bottom electrode and the top electrode are made of one of copper foil, woven conductive material or printed conductive silver paste.

[0010] As a preferred embodiment of the present invention, the bottom insulating protective layer, the top insulating protective layer, the nail hole insulating layer and the avoidance hole insulating layer are one of TPU and TPU composite non-woven fabric, and the TPU composite non-woven fabric is composed of TPU and non-woven fabric through thermal bonding or self-adhesive bonding.

[0011] The second object of the present invention is to provide a packaging method for a carbon nanotube conductive film heating device, which specifically comprises the following steps:

[0012] Step S1: Select a carbon nanotube conductive film with a conductive upper end surface, lay two bottom electrodes on the lower end surface of the carbon nanotube conductive film and on the non-conductive side, wherein the two bottom electrodes are connected to the positive and negative electrodes of a power source through two wires;

[0013] Step S2: Laying two top electrodes on the upper end surface of the carbon nanotube conductive film and located on the conductive side, wherein conductive nails are driven into the carbon nanotube conductive film to connect the bottom electrode and the top electrode by using the conductive nails;

[0014] Step S3: Encapsulate the top insulating protective layer and the bottom insulating protective layer on the upper and lower surfaces with the carbon nanotube conductive film, wherein the bottom electrode is arranged between the bottom insulating protective layer and the lower end surface of the carbon nanotube conductive film, and the top electrode is arranged between the top insulating protective layer and the upper end surface of the carbon nanotube conductive film.

[0015] As a preferred embodiment of the present invention, the step S11 is also included: according to the carbon nanotube conductive film with different square resistance requirements, the bottom electrode and the top electrode with corresponding width are selected, wherein, under the condition of consistent power density requirements and conductive film square resistance,

[0016] The electrode layout width is calculated as: W = √(U2 / PRs);

[0017] The heating current calculation formula is: I = UL / WRs;

[0018] Where: I is the current, unit is A;

[0019] U is voltage, unit V;

[0020] W is the heating area and width between the top electrode or the lower electrode, in meters;

[0021] L is the length of the heating area between the top electrode or the bottom electrode, in m

[0022] Rs is the square resistance of the carbon nanotube conductive film, in Ω;

[0023] P is the surface power density, unit is w / ㎡.

[0024] The third object of the present invention is to provide an application of a carbon nanotube conductive film heating device in a seat cushion heater.

[0025] The beneficial effects of the present invention are as follows: the carbon nanotube conductive film adopts TPU substrate, which has good softness and high comfort; the film can be mass-produced and then cut into the required shape, with low cost; the carbon-based material has a fast heating rate and low power consumption; conductive films with different square resistances can be selected for arrangement according to different heating requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become more apparent and easy to understand. In the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of the overall structure of Example 1.

[0028] The reference numerals include: bottom insulating protective layer 1 , bottom electrode 2 , carbon nanotube conductive film 3 , top electrode 4 , top insulating protective layer 5 , and power supply wire 6 . DETAILED DESCRIPTION

[0029] Example 1

[0030] See also Figure 1 As shown, a carbon nanotube conductive film heating device provided in this embodiment includes: a bottom insulating protective layer 1, a bottom electrode 2, a carbon nanotube conductive film 3, a top electrode 4, and a top insulating protective layer 5 arranged in sequence from bottom to top, two bottom electrodes 2 are connected to two power supply wires 6, two bottom electrodes 2 are electrically connected to two top electrodes 4 through two conductive pins, the top electrode 4 supplies power to the carbon nanotube conductive film 3, and the carbon nanotube conductive film generates heat and rises in temperature after being energized. The carbon nanotube conductive film 3 is a single-sided conductive film of carbon nanotubes, and the carbon nanotube conductive film 3 is connected to the top electrode 4.

[0031] As a preferred embodiment of the present invention, the conductive unit includes: an avoidance hole provided on the carbon nanotube conductive film and connecting the bottom electrode and the top electrode, a conductive layer (conductive material) provided in the avoidance hole, and an avoidance hole insulating layer provided between the inner wall of the avoidance hole and the conductive layer. The conductive nail passes through the nail hole provided on the carbon nanotube conductive film 3 to connect the bottom electrode 2 and the top electrode 4, and there is a nail hole insulating layer on the side of the conductive nail. The material of the bottom electrode 2 and the top electrode 4 is one of copper foil, woven conductive material or printed conductive silver paste. The bottom insulating protective layer 1, the top insulating protective layer 5, the nail hole insulating layer and the avoidance hole insulating layer are one of TPU and TPU composite non-woven fabric, and the TPU composite non-woven fabric is composed of TPU and non-woven fabric by thermal compounding or adhesive bonding, and TPU is a thermoplastic polyurethane elastomer.

[0032] Example 2

[0033] The present embodiment provides a packaging method for a carbon nanotube conductive film heating device, which specifically includes the following steps:

[0034] Step S1: Select a carbon nanotube conductive film 3 with a conductive upper end surface, lay two bottom electrodes 2 on the lower end surface of the carbon nanotube conductive film 3 and on the non-conductive side, wherein the two bottom electrodes 2 are connected to the positive and negative poles of the power supply through two power supply wires 6;

[0035] Step S2: Laying two top electrodes 4 on the upper end surface of the carbon nanotube conductive film 3 and on the conductive side, wherein conductive nails are driven into the carbon nanotube conductive film 3 to connect the bottom electrode 2 and the top electrode 4 by means of the conductive nails;

[0036] Step S3: Encapsulate the top insulating protective layer 5 and the bottom insulating protective layer 1 on the upper and lower surfaces with the carbon nanotube conductive film 3, wherein the bottom electrode 2 is arranged between the bottom insulating protective layer 1 and the lower end surface of the carbon nanotube conductive film 3, and the top electrode 4 is arranged between the top insulating protective layer 5 and the upper end surface of the carbon nanotube conductive film 3.

[0037] In this embodiment, in step S11, according to the carbon nanotube conductive film with different square resistance requirements, the bottom electrode and the top electrode with corresponding width are selected, wherein, under the condition of consistent power density requirement and conductive film square resistance,

[0038] The electrode layout width is calculated as: W = √(U2 / PRs);

[0039] The heating current calculation formula is: I = UL / WRs;

[0040] Where: I is the current, unit is A;

[0041] U is voltage, unit V;

[0042] W is the heating area and width between the top electrode or the lower electrode, in meters;

[0043] L is the length of the heating area between the top electrode or the bottom electrode, in m

[0044] Rs is the square resistance of the carbon nanotube conductive film, in Ω;

[0045] P is the surface power density, unit is w / ㎡.

[0046] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A carbon nanotube conductive film heating device, characterized in that: include: The bottom insulating protective layer, the bottom electrode, the carbon nanotube conductive film, the top electrode, and the top insulating protective layer are arranged in sequence from bottom to top. The bottom electrode is connected to the power supply wire. The bottom electrode and the top electrode are electrically connected through a conductive unit. The top electrode supplies power to the carbon nanotube conductive film. The carbon nanotube conductive film generates heat and heats up after being energized.

2. The carbon nanotube conductive film heating device according to claim 1, characterized in that: The carbon nanotube conductive film is a carbon nanotube single-sided conductive film, and the carbon nanotube conductive film is connected to a top electrode.

3. The carbon nanotube conductive film heating device according to claim 1, characterized in that: The conductive unit comprises: a shunting hole opened on the carbon nanotube conductive film and connecting the bottom electrode and the top electrode, a conductive layer arranged in the shunting hole, and a shunting hole insulating layer arranged between the inner wall of the shunting hole and the conductive layer.

4. The carbon nanotube conductive film heating device according to claim 1, characterized in that: The conductive unit comprises: a conductive nail and a nail hole opened on the carbon nanotube conductive film, the conductive nail passes through the nail hole to connect the bottom electrode and the top electrode, and a nail hole insulating layer is arranged between the conductive nail and the nail hole.

5. The carbon nanotube conductive film heating device according to claim 1, characterized in that: The conductive unit comprises: avoidance grooves opened on the front, one side and the back of the carbon nanotube conductive film, and conductive sheets laid in the avoidance grooves and connecting the bottom electrode and the top electrode.

6. The carbon nanotube conductive film heating device according to claim 1, characterized in that: The bottom electrode and the top electrode are made of copper foil, woven conductive material or printed conductive silver paste.

7. The carbon nanotube conductive film heating device according to claim 1, characterized in that: The bottom insulating protective layer, the top insulating protective layer, the nail hole insulating layer and the avoidance hole insulating layer are one of TPU and TPU composite non-woven fabric, and the TPU composite non-woven fabric is formed by thermally compounding TPU and non-woven fabric or gluing them with self-adhesive.

8. The packaging method of a carbon nanotube conductive film heating device according to claim 1, characterized in that: The following steps are involved: Step S1: Select a carbon nanotube conductive film with a conductive upper end surface, lay two bottom electrodes on the lower end surface of the carbon nanotube conductive film and on the non-conductive side, wherein the two bottom electrodes are connected to the positive and negative electrodes of a power source through two wires; Step S2: Laying two top electrodes on the upper end surface of the carbon nanotube conductive film and located on the conductive side, wherein conductive nails are driven into the carbon nanotube conductive film to connect the bottom electrode and the top electrode by using the conductive nails; Step S3: Encapsulate the top insulating protective layer and the bottom insulating protective layer on the upper and lower surfaces with the carbon nanotube conductive film, wherein the bottom electrode is arranged between the bottom insulating protective layer and the lower end surface of the carbon nanotube conductive film, and the top electrode is arranged between the top insulating protective layer and the upper end surface of the carbon nanotube conductive film.

9. The packaging method of a carbon nanotube conductive film heating device according to claim 8, characterized in that: The step S11 is also included: selecting a bottom electrode and a top electrode of corresponding width according to the carbon nanotube conductive film with different square resistance requirements, wherein, under the condition of consistent power density requirements and conductive film square resistance, The electrode layout width is calculated as: W = √(U2 / PRs); The heating current calculation formula is: I = UL / WRs; Where: I is the current, unit is A; U is voltage, unit V; W is the heating area and width between the top electrode or the lower electrode, in meters; L is the length of the heating area between the top electrode or the bottom electrode, in m Rs is the square resistance of the carbon nanotube conductive film, in Ω; P is the surface power density, unit is w / ㎡.

10. Application of the carbon nanotube conductive film heating device according to any one of claims 1 to 7 in a seat cushion heater.

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