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CN-224218531-U - Graphene radiation plate structure and graphene warmer

CN224218531UCN 224218531 UCN224218531 UCN 224218531UCN-224218531-U

Abstract

The utility model discloses a graphene radiation plate structure and a graphene warmer, which comprise a base substrate, a conductive silver layer, a graphene heating layer and an insulating layer, wherein a power-on end part and a heating main body part except for the power-on end part are respectively and correspondingly arranged on the first silver coating and the second silver coating of the conductive silver layer, the first silver coating and the second silver coating are symmetrically arranged on the surface of the base substrate, the graphene heating layer is arranged on the surfaces of the base substrate, the first silver coating and the second silver coating, and the insulating layer is arranged on the surfaces of the base substrate and the graphene heating layer. Therefore, the graphene heating layer and the base substrate are ensured to be sintered, welded and molded, the structural stability and sintering uniformity of each layer are ensured, the interlayer bonding strength is improved, the current distribution is optimized by the symmetrical silver sheet layout, the heating surface uniformity effect is achieved, and the electrothermal conversion efficiency is improved.

Inventors

  • YU JIJIANG

Assignees

  • 佛山市先进者电器有限公司

Dates

Publication Date
20260508
Application Date
20250512

Claims (10)

  1. 1. The graphene radiation plate structure is characterized by comprising a base substrate, a conductive silver layer, a graphene heating layer and an insulating layer, wherein the conductive silver layer is provided with a first silver coating and a second silver coating, the first silver coating and the second silver coating are respectively and correspondingly provided with an electric connection end part and a heating main body part except for the electric connection end part, the first silver coating and the second silver coating are symmetrically arranged on the surface of the base substrate, the graphene heating layer is arranged on the surfaces of the base substrate, the first silver coating and the second silver coating, and the insulating layer is arranged on the surfaces of the base substrate and the graphene heating layer.
  2. 2. The graphene radiation plate structure according to claim 1, wherein the graphene heating layer covers the surface of the heating body portion and more than 90% of the surface area of the heating body portion.
  3. 3. The graphene radiation plate structure according to claim 1, wherein the insulating layer completely covers the graphene heating layer and the surface of the heating main body part, and the electric connection ends of the first silver coating and the second silver coating are exposed outside the insulating layer.
  4. 4. The graphene radiation plate structure according to claim 3, wherein one end of the heating main body of the first silver coating and one end of the heating main body of the second silver coating are bent towards each other by 90 degrees, and then bent towards each other by 90 degrees in the same direction to form the electric connection end connected with an external circuit.
  5. 5. The graphene radiant panel structure of any one of claims 1-4, wherein the conductive silver layer, the graphene heat-generating layer, and the insulating layer are sequentially sintered, solidified and connected on the base substrate in descending order of sintering temperature.
  6. 6. The graphene radiant panel structure of any one of claims 1-4, wherein the graphene heat-generating layer has a first heat-generating layer and a second heat-generating layer, the first heat-generating layer is sinter-bonded to the conductive silver layer, the second heat-generating layer is sinter-bonded to the insulating layer, and the first heat-generating layer has a density greater than the second heat-generating layer.
  7. 7. The graphene radiation plate structure according to claim 1, wherein the base substrate is one of a mica plate, a glass ceramic plate, a magnesium aluminum compound plate and a quartz plate, the conductive silver layer is conductive silver paste, and the conductive silver paste is coated along a set conductive path and then sintered for the first time.
  8. 8. The graphene radiant panel structure of claim 7, wherein the graphene heating layer is graphene slurry, and the graphene slurry is coated along the surface of the base substrate and the conductive silver layer and then subjected to secondary sintering.
  9. 9. The graphene radiation plate structure according to claim 8, wherein the insulating layer is a ceramic coating, and the ceramic coating is coated along the surfaces of the base substrate, the conductive silver layer and the graphene heating layer and then sintered for three times.
  10. 10. A graphene warmer, characterized by comprising a warmer housing and a graphene radiation plate structure according to any one of claims 1-9.

Description

Graphene radiation plate structure and graphene warmer Technical Field The utility model relates to the technical field of heating plates, in particular to a graphene radiation plate structure and a graphene heater. Background The graphene radiation plate is a heating or radiation device made of excellent thermal and electrical properties of graphene materials, and is generally composed of a graphene heating layer, a heat insulation layer, a metal shell and the like, and the graphene radiation plate is widely applied to the fields of industrial heating, medical physiotherapy, building heating and the like by virtue of the high-efficiency, safe and healthy characteristics. For example, the Chinese patent application with publication number of CN112804773A, entitled "heating plate and method for preparing same", comprises insulating substrate, covering conductive paste, preferably graphene, on the surface of the insulating substrate, sintering to form conductive layer, covering electrode paste, preferably conductive silver paste, on both sides of the surface of the conductive layer, sintering to form electrode layer, laser etching non-electrode region of the conductive layer to form etched conductive layer, and finally encapsulating and sintering the material obtained in the above steps to obtain heating plate. However, the following drawbacks still exist in the prior art: 1. In the aspect of the design of the layered structure of the existing graphene heating plate, the graphene serving as the conductive layer is sintered with the insulating substrate, then the conductive silver paste, the insulating packaging layer and the like are sequentially sintered, and as the sintering temperature of the graphene is lower than that of the conductive silver paste, the graphene is sintered firstly, then the conductive silver paste is sintered, and the sintered graphene is subjected to the problem of being heated and melted again, so that the whole sintering process, the sintering quality and the heat conversion effect are finally affected. 2. When sintering graphene and conductive silver paste, the conductive silver paste is generally covered on two sides of the surface of the graphene, so that the heat conduction contact area between the conductive silver paste and the graphene is too small, and the heat conversion efficiency is affected. 3. After packaging and sintering are completed, the electrode layer formed by sintering the conductive silver paste does not form a conductive silver terminal exposed out of the packaging layer, so that the problem of inconvenient wiring in subsequent application is caused. Disclosure of utility model In order to overcome the defects in the prior art, one of the purposes of the utility model is to provide a graphene radiation plate structure. The graphene radiation plate structure comprises a base substrate, a conductive silver layer, a graphene heating layer and an insulating layer, wherein the conductive silver layer is provided with a first silver coating and a second silver coating, the first silver coating and the second silver coating are respectively and correspondingly provided with an electric connection end part and a heating main body part except for the electric connection end part, the first silver coating and the second silver coating are symmetrically arranged on the surface of the base substrate, the graphene heating layer is arranged on the surfaces of the base substrate, the first silver coating and the second silver coating, the insulating layer is arranged on the surfaces of the base substrate and the graphene heating layer, and according to the arrangement of the conductive silver layer, the graphene heating layer and the insulating layer, the first sintering, the second sintering and the third sintering are correspondingly carried out, and the sintering temperatures of the first sintering, the second sintering and the third sintering are arranged in descending order. Further, the graphene heating layer covers the surface of the heating main body part, and covers more than 90% of the surface area of the heating main body part. Further, the insulating layer completely covers the graphene heating layer and the surface of the heating main body part, and the electricity connection end parts of the first silver coating and the second silver coating are exposed out of the insulating layer. Further, after one ends of the heating main body parts of the first silver coating and the second silver coating are bent by 90 degrees in opposite directions, the electric connection end part connected with an external circuit is formed by bending the heating main body parts by 90 degrees in the same direction. Further, the conductive silver layer, the graphene heating layer and the insulating layer are sequentially sintered, solidified and connected on the base substrate in descending order by taking the sintering temperature as the descending order. Further, the graphene heating la