Heating pad and graphene heating coating formulation for the heating pad

Abstract

The present application relates to a kind of heating pads, including upper silica gel layer, heat preservation layer, flexible graphene heating element, reflective layer, thermal barrier and lower silica gel layer, the flexible graphene heating element includes graphene heating coating, conductive fiber cloth, conductive coating, reflective surface and protective film, the graphene heating coating is printed in the surface of conductive fiber cloth, the protective film is laid on the surface of graphene heating coating, the conductive coating is printed in the back of conductive limiting part, the reflective surface is laid on the conductive coating;Since conductive coating, conductive fiber cloth is still kept in conductive state under bending state, guarantee graphene heating coating is always in energized state, so no matter how to bend flexible graphene heating element, flexible graphene heating element can heat, to make heating pad have bending function, conveniently heat the pad is bent and is stored, reduce the occupied space of heating pad, satisfy user demand.

Description

Technical Field

[0001] The invention relates to a heating pad and a graphene heating coating formula of the heating pad. Background Art

[0002] The existing heating pad has a built-in heating module. Due to the large size of the heating module, the thickness of the heating pad is relatively large. In addition, the heating module cannot be folded, resulting in the heating pad being unable to be folded or bent for storage. The heating pad takes up a large space. In addition, the existing heating module has low heating efficiency and slow heating speed, which cannot meet user needs. Summary of the Invention

[0003] The first object of the present invention is to provide a heating pad that is bendable, heats up quickly, and is light and thin.

[0004] The second purpose of the present invention is to provide a graphene heating coating formula with high heating efficiency.

[0005] The first object of the present invention is achieved in this way:

[0006] A heating pad comprises an upper silicone layer, a thermal insulation layer, a flexible graphene heating element, a reflective layer, a thermal insulation layer, and a lower silicone layer. The flexible graphene heating element comprises a graphene heating coating, a conductive fiber cloth, a conductive coating, a reflective surface, and a protective film. The graphene heating coating is printed on the surface of the conductive fiber cloth, the protective film is laid on the surface of the graphene heating coating, the conductive coating is printed on the back of the conductive limiter, and the reflective surface is laid on the conductive coating.

[0007] The upper silicone layer, thermal insulation layer, flexible graphene heating element, reflective layer, thermal insulation layer and lower silicone layer are arranged in sequence from top to bottom, the graphene heating coating faces the thermal insulation layer, and the reflective surface faces the reflective layer.

[0008] The flexible graphene heating element is light and thin, occupies a small space, and effectively reduces the overall thickness of the heating pad. In addition, the flexible graphene heating element adopts conductive fiber cloth, and the surface of the conductive fiber cloth is printed with a graphene heating coating, and the back of the conductive fiber cloth is printed with a conductive coating. When the flexible graphene heating element is bent, the conductive coating and the conductive fiber cloth remain conductive in the bent state, ensuring that the graphene heating coating is always in an energized state. Therefore, no matter how the flexible graphene heating element is bent, the flexible graphene heating element can generate heat, so that the heating pad has a bending function, and the heating pad can be stored after being bent, reducing the space occupied by the heating pad and meeting user needs.

[0009] Furthermore, the heat generated above the flexible graphene heating element is transferred to the thermal insulation layer and then to the upper silicone layer, causing the upper silicone layer to generate heat. Due to the provision of the thermal insulation layer, the heat of the flexible graphene heating element can be concentrated in the thermal insulation layer and then transferred to the upper silicone layer, resulting in a good heating effect and a better thermal insulation effect. Moreover, the heat below the flexible graphene heating element cannot be transferred downward due to the obstruction of the reflective surface, the reflective layer and the thermal insulation layer, so that the heating pad only has a single-sided heating effect, the heat can be concentrated and utilized, and the heating pad has a higher heating efficiency.

[0010] The first object of the present invention can also be solved by the following technical measures:

[0011] Furthermore, the invention also includes a controller electrically connected to the conductive coating of the flexible graphene heating element. The user can adjust the heating temperature of the flexible graphene heating element by adjusting the controller, which is simple to adjust and can meet different temperature requirements of the user.

[0012] Furthermore, the flexible graphene heating element is electrically connected to a controller and is provided with a temperature sensing probe. The temperature sensing probe monitors the temperature of the graphene heating coating and provides real-time feedback to the controller. When the temperature reaches a preset value, the controller disconnects the power supply to the flexible graphene heating element to prevent the heating element from overheating.

[0013] Furthermore, the thickness of the flexible graphene heating element is 0.3mm-0.6mm. The thinner the flexible graphene heating element is, the better the heating effect is, and the more user-friendly it is. Therefore, the thinner the heating pad is, the less space it occupies. The user can use the heating pad as a mouse pad to warm their hands, or as a placemat to heat up food when placed on it, thus meeting the user's different needs.

[0014] Furthermore, the maximum heating temperature of the flexible graphene heating element is 170°. The temperature of the flexible graphene heating element is as high as 170°, which greatly improves the application range of the flexible graphene heating element.

[0015] Furthermore, the bending angle of the flexible graphene heating element is in the range of 1°-359°.

[0016] The second object of the present invention is achieved in this way:

[0017] A graphene heating coating formula comprises the following components in percentage by mass: 20-30% of a polymer resin synthetic material, 2-5% of a dispersant, 3-5% of a pigment, 5-10% of graphene, and 50-60% of a solvent.

[0018] The beneficial effects of the present invention are as follows:

[0019] According to the present invention, the flexible graphene heating element is light and thin, occupies a small space, and effectively reduces the overall thickness of the heating pad. In addition, the flexible graphene heating element adopts conductive fiber cloth, the surface of the conductive fiber cloth is printed with a graphene heating coating, and the back of the conductive fiber cloth is printed with a conductive coating. When the flexible graphene heating element is bent, the conductive coating and the conductive fiber cloth remain conductive in the bent state, ensuring that the graphene heating coating is always in an energized state. Therefore, no matter how the flexible graphene heating element is bent, the flexible graphene heating element can generate heat, so that the heating pad has a bending function, and the heating pad can be stored after being bent, thereby reducing the space occupied by the heating pad and meeting user needs.

[0020] In the present invention, the heat generated above the flexible graphene heating element is transferred to the thermal insulation layer and then to the upper silicone layer, causing the upper silicone layer to generate heat. Since the thermal insulation layer is provided, the heat of the flexible graphene heating element can be concentrated in the thermal insulation layer and then transferred to the upper silicone layer, resulting in a good heating effect and a better thermal insulation effect. Moreover, the heat below the flexible graphene heating element cannot be transferred downward due to the obstruction of the reflective surface, the reflective layer and the thermal insulation layer, so that the heating pad only has a single-sided heating effect, the heat can be concentrated and utilized, and the heating pad has a higher heating efficiency.

[0021] According to the present invention, the user can adjust the heating temperature of the flexible graphene heating element by adjusting the controller. The temperature adjustment is simple and can meet the different temperature requirements of the user. In addition, a temperature sensing probe is provided, which monitors the temperature of the graphene heating coating and feeds back to the controller in real time. When the temperature reaches a preset value, the controller disconnects the power supply of the flexible graphene heating element to prevent the heating pad from overheating.

[0022] The heating pad of the present invention is relatively thin, which reduces the space occupied by the heating pad. The user can use the heating pad as a mouse pad to warm the hands, or use it as a placemat to heat up the food when the food is placed on the placemat, thereby meeting the different needs of the users. In addition, the temperature of the flexible graphene heating element is as high as 170°, which greatly improves the application range of the flexible graphene heating element. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of a heating pad.

[0024] Figure 2 A top view of the heating pad.

[0025] Figure 3 A cross-sectional view of a heating pad.

[0026] Figure 4 This is an exploded view of the heating pad (upper silicone layer, flexible graphene heating element and lower silicone layer).

[0027] Figure 5 This is an exploded view of the heating pad.

[0028] Figure 6 This is an exploded diagram of the flexible graphene heating element of the heating pad. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0030] Example, combined with Figures 1 to 6 As shown, a heating pad includes an upper silicone layer 1, a thermal insulation layer 2, a flexible graphene heating element 3, a reflective layer 4, a thermal insulation layer 7, a lower silicone layer 5, a temperature sensing probe (not shown in the figure) and a controller 6.

[0031] The flexible graphene heating element 3 includes a graphene heating coating 31, a conductive fiber cloth 32, a conductive coating 33, a reflective surface 34, and a protective film 35. The graphene heating coating 31 is printed on the surface of the conductive fiber cloth 32, the protective film 35 is laid on the surface of the graphene heating coating 31, the conductive coating 33 is printed on the back of the conductive limiter, and the reflective surface 34 is laid on the conductive coating 33. Furthermore, the thickness of the flexible graphene heating element 3 is 0.3mm-0.6mm, the maximum heating temperature of the flexible graphene heating element 3 is 170°, and the bending angle of the flexible graphene heating element 3 is in the range of 1°-359°.

[0032] The upper silicone layer 1, thermal insulation layer 2, flexible graphene heating element 3, reflective layer 4, thermal insulation layer 7 and lower silicone layer 5 are arranged in sequence from top to bottom, the graphene heating coating 31 faces the thermal insulation layer 2, and the reflective surface 34 faces the reflective layer 4.

[0033] The controller 6 is arranged next to the heating pad, and is electrically connected to the conductive coating 33 of the flexible graphene heating element 3. The temperature sensing probe is arranged in the heating pad and contacts the graphene heating coating 31, and is electrically connected to the controller 6.

[0034] The formula of the graphene heating coating 31 includes the following components in percentage by mass: 20-30% polymer resin synthetic material, 2-5% dispersant, 3-5% pigment, 5-10% graphene, and 50-60% solvent.

[0035] The flexible graphene heating element 3 is light and thin, occupies a small space, and effectively reduces the overall thickness of the heating pad. Moreover, the flexible graphene heating element 3 adopts a conductive fiber cloth 32, and the surface of the conductive fiber cloth 32 is printed with a graphene heating coating 31, and the back of the conductive fiber cloth 32 is printed with a conductive coating 33. When the flexible graphene heating element 3 is bent, the conductive coating 33 and the conductive fiber cloth 32 remain conductive in the bent state, ensuring that the graphene heating coating 31 is always in an energized state. Therefore, no matter how the flexible graphene heating element 3 is bent, the flexible graphene heating element 3 can generate heat, so that the heating pad has a bending function, and the heating pad can be stored after being bent, reducing the space occupied by the heating pad and meeting user needs.

[0036] The user can adjust the heating temperature of the flexible graphene heating element 3 by adjusting the controller 6. The temperature adjustment is simple and can meet the different temperature requirements of the user. In addition, a temperature sensing probe is provided, which monitors the temperature of the graphene heating coating 31 and feeds back to the controller 6 in real time. When the temperature reaches the preset value, the controller 6 disconnects the power supply of the flexible graphene heating element 3 to prevent the heating pad from overheating.

[0037] The heating pad is thin, which reduces the space occupied by the heating pad. Users can use the heating pad as a mouse pad to warm their hands, or as a placemat to heat up the food when dishes are placed on it, thereby meeting the different needs of users. In addition, the temperature of the flexible graphene heating element 3 is as high as 170°, which greatly improves the application range of the flexible graphene heating element 3.

[0038] The heat generated above the flexible graphene heating element is transferred to the thermal insulation layer and then to the upper silicone layer, causing the upper silicone layer to generate heat. Due to the provision of the thermal insulation layer, the heat of the flexible graphene heating element can be concentrated in the thermal insulation layer and then transferred to the upper silicone layer, resulting in a good heating effect and a better thermal insulation effect. Moreover, the heat below the flexible graphene heating element cannot be transferred downward due to the obstruction of the reflective surface, the reflective layer and the thermal insulation layer, so that the heating pad only has a single-sided heating effect, the heat can be concentrated and utilized, and the heating pad has a higher heating efficiency.

Claims

1. A heating pad comprising an upper silica gel layer, a thermal insulation layer, a flexible graphene heating element, a reflective layer, a thermal insulation layer, and a lower silica gel layer, characterized in that: The flexible graphene heating element includes a graphene heating coating, a conductive fiber cloth, a conductive coating, a reflective surface and a protective film. The graphene heating coating is printed on the surface of the conductive fiber cloth, the protective film is laid on the surface of the graphene heating coating, the conductive coating is printed on the back of the conductive limiter, and the reflective surface is laid on the conductive coating. The upper silicone layer, thermal insulation layer, flexible graphene heating element, reflective layer, thermal insulation layer and lower silicone layer are arranged in order from top to bottom, the graphene heating coating faces the thermal insulation layer, and the reflective surface faces the reflective layer; Also included is a controller, the controller being electrically connected to the conductive coating of the flexible graphene heating element; It also includes a temperature sensing probe, which is arranged in the heating pad and contacts the graphene heating coating, and the temperature sensing probe is electrically connected to the controller; The thickness of the flexible graphene heating element is 0.3mm-0.6mm; The maximum heating temperature of the flexible graphene heating element is 170°; The bending angle of the flexible graphene heating element is in the range of 1°-359°; The graphene heating coating formula includes the following components in percentage by mass: 20-30% of polymer resin synthetic material, 2-5% of dispersant, 3-5% of pigment, 5-10% of graphene, and 50-60% of solvent.

Images