CN210469766U - Electric heating device - Google Patents
Electric heating device Download PDFInfo
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- CN210469766U CN210469766U CN201921398620.XU CN201921398620U CN210469766U CN 210469766 U CN210469766 U CN 210469766U CN 201921398620 U CN201921398620 U CN 201921398620U CN 210469766 U CN210469766 U CN 210469766U
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Abstract
The application relates to an electric heating device, which comprises a shell and at least two heating sheets, wherein the two adjacent heating sheets are arranged at intervals so that the shell can be folded at the interval between the two adjacent heating sheets; the heating layer comprises at least one conductive heating body, a positive electrode plate and a negative electrode plate, and the positive electrode plate and the negative electrode plate are respectively arranged at two ends of the conductive heating body and are electrically connected with the conductive heating body; parallel connection between the conductive heating body, the positive electrode piece electricity of two adjacent heating pieces is connected each other, and the negative electrode piece electricity of two adjacent heating pieces is connected each other, and parallel connection between the layer that generates heat of a plurality of heating pieces. The electric heating device has higher electric safety.
Description
Technical Field
The application relates to electric heating equipment, in particular to an electric heating device.
Background
At present, although the temperature in winter slightly rises due to the global warming effect, heating equipment is still needed in winter in areas without heating supply, wherein the heating equipment is widely applied to electric heating equipment, such as electric blankets, heating mats and the like. Although the safety of the electric heating equipment is greatly improved, the electric heating equipment still spontaneously burns due to overheating, and disasters occur, so that the safety of the electric heating equipment is still required to be improved.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide an electric heating device to solve the problem of how to improve the electric safety of the electric heating device.
An electric heating device comprises a shell and at least two heating sheets, wherein the heating sheets are arranged in the shell, two adjacent heating sheets are arranged at intervals, so that the shell can be folded at the interval between the two adjacent heating sheets, each heating sheet comprises a first substrate, a second substrate and a heating layer, wherein,
the heating layer is arranged on the first substrate, and the second substrate is arranged on the heating layer, so that the heating layer is fixed between the first substrate and the second substrate;
the heating layer comprises at least one electric conduction heating element, a positive electrode plate and a negative electrode plate, the electric conduction heating element comprises a first end and a second end which are oppositely arranged, the positive electrode plate is arranged at the first end of the electric conduction heating element and is electrically connected with the electric conduction heating element, and the negative electrode plate is arranged at the second end of the electric conduction heating element and is electrically connected with the electric conduction heating element;
the conductive heating bodies are connected in parallel, the positive electrode plates of two adjacent heating sheets are electrically connected with each other, the negative electrode plates of two adjacent heating sheets are electrically connected with each other, and the heating layers of the heating sheets are connected in parallel.
In one embodiment, the heating sheet is fixedly connected to the shell; alternatively, the first and second electrodes may be,
the cavity is divided into a plurality of subareas, each subarea corresponds to one heating sheet, and the heating sheets are arranged in the subareas and limited in the subareas.
In one embodiment, the first substrate and the second substrate are made of FR-4 epoxy boards.
In one embodiment, the positive electrode sheet and the negative electrode sheet are at least partially embedded in the first substrate or the second substrate, the conductive heater is made of conductive ink, graphene material or carbon crystal material, and is formed on the first substrate or the second substrate by coating and printing; or
The conductive heating body is made of carbon fiber paper and is formed on the first substrate or the second substrate in a hot stamping mode.
In one embodiment, after the positive electrode sheet and the negative electrode sheet are fixed, the positive electrode sheet and the negative electrode sheet are flush with the end face of the first substrate or the second substrate.
In one embodiment, the positive electrode sheet and the negative electrode sheet are provided with conductive interfaces, the first substrate or the second substrate is provided with a first through groove and a second through groove, the first through groove is arranged along the direction in which the length of the positive electrode sheet or the negative electrode sheet extends, the conductive interfaces are connected to the outside through the first through groove, the second through groove is arranged along the thickness direction of the first substrate or the second substrate and penetrates through the first substrate or the second substrate, the conductive interfaces are communicated with the outside through the second through groove, and the conductive interfaces of the positive electrode sheets of two adjacent heating sheets and the conductive interfaces of the negative electrode sheets of two adjacent heating sheets are connected through cables, so that the adjacent heating sheets are electrically connected.
In one embodiment, the conductive interface is a block structure provided with two through holes that are communicated with each other, one of the through holes is a screw hole, a screw passes through the second through groove and is fixed with the conductive interface, so as to fix the cable and the conductive interface, and the cable is electrically connected to the positive electrode sheet or the negative electrode sheet through the conductive interface when being fixed.
In one embodiment, only one conductive heating body is arranged on each heating sheet.
In one embodiment, each heating sheet comprises a plurality of conductive heating elements, and the conductive heating elements of the same heating sheet are connected to the same positive electrode sheet and the same negative electrode sheet.
In one embodiment, the heating sheet is provided with two pieces, and the electric heating device is folded into a V shape; or
The heating sheet is provided with three sheets, and the electric heating device is folded into an N shape or a concave shape; or
The heating sheet is provided with four sheets, and the electric heating device is folded into an M shape.
According to the electric heating device, the positive electrode plate and the negative electrode plate are respectively connected to the two ends of the electric heating element to form the heating layer, and then the heating layer is fixed between the first substrate and the second substrate, so that the electric heating element can be completely hidden between the first substrate and the second substrate, and even if the electric heating element is overheated, dangerous disasters such as spontaneous combustion cannot be caused. Particularly, the electric heating bodies are connected in parallel, and the heating layers of the plurality of heating sheets are connected in parallel, so that the electric heating device can work at a lower voltage, the overheating phenomenon can be further avoided, and the electricity safety of the electric heating device is enhanced.
Drawings
Fig. 1 is a schematic structural diagram of an electric heating device according to an embodiment of the present application;
fig. 2 is an exploded view of an electric heating device according to an embodiment of the present application;
fig. 3 is an exploded view of a heat generating layer of an electric heating device according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a heat generating layer of an electric heating device according to an embodiment of the present application;
fig. 5 is a schematic structural view of a heat generating layer of an electric heating device according to another embodiment of the present application;
fig. 6 is a schematic structural view of a heat generating layer of an electric heating device according to still another embodiment of the present application;
fig. 7 is a schematic view of a connection structure of adjacent heating sheets of an electric heating device according to an embodiment of the present application;
fig. 8 is a schematic cross-sectional view of an electric heating device according to an embodiment of the present application;
fig. 9 is an exploded view of a controller of an electro-thermal device according to an embodiment of the present application.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 3, which schematically illustrate a structure of an electroluminescent device 10 according to an embodiment of the present invention, the electroluminescent device 10 includes a housing 110 and at least two heating sheets 120, the heating sheets 120 are disposed in the housing 110, and two adjacent heating sheets 120 are disposed at an interval, so that the housing 110 can be folded at the interval between two adjacent heating sheets 120, each heating sheet 120 includes a first substrate 121, a second substrate 123 and a heating layer 125, the heating layer 125 is disposed on the first substrate 121, the second substrate 123 is disposed on the heating layer 125, so that the heating layer 125 is fixed between the first substrate 121 and the second substrate 123, the heating layer 125 includes at least one conductive heater 1251, a positive electrode plate 1253 and a negative electrode plate 1255, the conductive heater 1251 includes a first end 125a and a second end 125b that are disposed opposite to each other, the positive electrode plate 1253 is disposed at a first end 125a of the conductive heater 1251, and is electrically connected to the conductive heat-generating body 1251, and the negative electrode tab 1255 is provided at the second end 125b of the conductive heat-generating body 1251 and is electrically connected to the conductive heat-generating body 1251; the conductive heating bodies 1251 are connected in parallel, the positive electrode plates 1253 of two adjacent heating sheets 120 are electrically connected with each other, the negative electrode plates 1255 of two adjacent heating sheets 120 are electrically connected with each other, and the heating layers 125 of the plurality of heating sheets 120 are connected in parallel.
The heat generating layer 125 is formed by connecting the positive electrode tab 1253 and the negative electrode tab 1255 to both ends of the conductive heat generating body 1251, and the heat generating layer 125 is fixed between the first substrate 121 and the second substrate 123, so that the conductive heat generating body 1251 can be completely hidden between the first substrate 121 and the second substrate 123, and even if the conductive heat generating body 1251 is overheated, dangerous disasters such as spontaneous combustion cannot be caused under the isolation between the first substrate 121 and the second substrate 123. Particularly, the conductive heating elements 1251 are connected in parallel, and the heating layers 125 of the plurality of heating sheets 120 are connected in parallel, so that the electric heating device 10 can work at a lower voltage, thereby further avoiding overheating and enhancing the power consumption safety of the electric heating device 10.
To avoid displacement of the heating sheet 120 when the electroluminescent device 10 is folded, the heating sheet 120 may be fixed relative to the housing 110. In some of these embodiments, the heating fins 120 are fixedly attached to the housing 110. For example, the heating sheet 120 may be adhered or otherwise secured to the housing 110. In other embodiments, the cavity may be partitioned into multiple partitions, one heating sheet 120 for each partition, and the heating sheets 120 are disposed in the partitions and are retained therein. For example, the housing on both sides of the heating panel 120 may be sewn together by means of sewing lines so that the heating panel 120 cannot move when folded. It will be appreciated that the stitching line cannot intersect the sides of the housing when the stitching line is placed to ensure that a storage space for positive and negative electrode sheets 1253 and 1255 remains within the cavity.
The heating sheet 120 may have a hard plate-shaped structure to facilitate the folding of the electric heating device 10. Generally, in order to facilitate folding and to improve the feeling of touch, the housing 110 is made of a flexible material, such as cloth, and in this case, if the heating sheet 120 is made of a soft structure, it is difficult to make the shape of the electric heating device 10 good, and it is inconvenient to fold and maintain the shape after folding.
In some of these embodiments, the first substrate 121 and the second substrate 123 are made of FR-4 epoxy boards. By adopting the FR-4 epoxy resin plate, on one hand, better support can be provided, and on the other hand, the electrode sheet can be better fixed, and insulation of the conductive heating element 1251 is realized.
When the first and second substrates 121 and 123 employ epoxy plates, the heating sheet 120 may be prepared through a process of preparing a circuit board. For example, the positive electrode sheet 1253 and the negative electrode sheet 1255 may be at least partially embedded on the first substrate 121 or the second substrate 123, and the conductive heat generating body 1251 may be formed on the first substrate 121 or the second substrate 123 in a coating or hot-embossing manner. In a specific embodiment, after the positive electrode tab 1253 and the negative electrode tab 1255 are fixed, the positive electrode tab 1253 and the negative electrode tab 1255 are just flush with the end surface of the first substrate 121 or the second substrate 123.
In particular, when the heating sheet 120 is manufactured, the positive electrode sheet 1253 and the negative electrode sheet 1255 may be formed on the first substrate 121 by a process of manufacturing a circuit board, which is similar to the process of forming a gold finger on a PCB. After the positive electrode tab 1253 and the negative electrode tab 1255 are fixed on the first substrate 121, the conductive heating element 1251 may be formed by printing on the first substrate 121, and it can be understood that the conductive heating element 1251 may realize the conversion between the solid state and the liquid state under certain conditions. For example, the conductive heat-generating body 1251 may be a conductive ink, a graphene material, a carbon crystal material, or the like. The conductive heat generating element 1251 may also be carbon fiber paper, in which case the conductive heat generating element 1251 may be formed on the first substrate 121 by hot embossing. In other embodiments, the conductive heating element 1251 may be formed on the second substrate 123 simultaneously when the positive electrode tab 1253 and the negative electrode tab 1255 are formed on the first substrate 121, and at this time, the preparation of the positive electrode tab 1253 and the negative electrode tab 1255 and the preparation of the conductive heating element 1251 may be performed simultaneously, so as to improve the processing efficiency. After the conductive heating element 1251, the positive electrode plate 1253 and the negative electrode plate 1255 are all molded, the first substrate 121 and the second substrate 123 are pressed and fixed, and the process is the same as the pressing process of the multilayer PCB. The heating sheet 120 prepared by the method is embodied as a PCB-like structure which is completely insulated from the outside, and the heating layer 125 is completely isolated by the epoxy plates on the two sides, so that dangerous accidents such as spontaneous combustion of the product can not occur even if a circuit fault occurs.
Referring to fig. 5 and 7, the positive electrode tab 1253 and the negative electrode tab 1255 are provided with a conductive interface 1257, the first substrate 121 or the second substrate 123 is provided with a first through groove 121a and a second through groove 121b, the first through groove 121a is disposed along a direction in which a length of the positive electrode tab 1253 or the negative electrode tab 1255 extends, the conductive interface 1257 is connected to the outside through the first through groove 121a, the second through groove 121b is disposed along a thickness direction of the first substrate 121 or the second substrate 123 and penetrates through the first substrate 121 or the second substrate 123, the conductive interface 1257 is connected to the outside through the second through groove 121b, and the conductive interface 1257 of the positive electrode tab 1253 of two adjacent heating sheets 120 and the conductive interface 1257 of the negative electrode tab 1255 of two adjacent heating sheets 120 are connected by a cable, so as to electrically connect the adjacent heating sheets 120. Therefore, the conductive interface 1257 can be embedded between the first substrate 121 and the second substrate 123 and hidden by the first substrate 121 and the second substrate 123, thereby further avoiding the wires of the cable, the positive electrode piece 1253 and the negative electrode piece 1255 from being exposed and enhancing the safety performance.
Referring to fig. 8, the conductive interface 1257 is a block structure provided with two through holes communicating with each other, one of the through holes is a screw hole, and a screw passes through the second through groove 121b to be fixed to the conductive interface 1257, so that a cable passing through the other through hole is fixed to the conductive interface 1257, and when the cable is fixed, the cable is electrically connected to the positive electrode piece 1253 or the negative electrode piece 1255 through the conductive interface 1257. Of course, the cable may be fixed by other methods such as welding, etc., without being limited to the method of fixing by screws.
Referring to fig. 4 and 5, it can be understood that each heating plate 120 is provided with at least two conductive interfaces 1257, and each of the positive electrode plate 1253 and the negative electrode plate 1255 has at least two conductive interfaces 1257 to electrically connect the adjacent heating plates 120.
Referring to fig. 4 and 5, in some embodiments, only one conductive heating element 1251 may be disposed on each heating plate 120. Referring to fig. 6, in other embodiments, each heating sheet 120 includes a plurality of conductive heating elements 1251, and the plurality of conductive heating elements 1251 of the same heating sheet 120 are connected to the same positive electrode tab 1253 and the same negative electrode tab 1255.
The heating sheets 120 may be provided in plurality, and the length of the case 110 corresponds to the number of the heating sheets 120. As the number of the heating sheets 120 increases, the electroluminescent device 10 may be folded into various shapes, for example, when two heating sheets 120 are provided, the electroluminescent device 10 may be folded into a V shape, when three heating sheets are provided, the electroluminescent device may be folded into an N shape or a concave shape, and when four heating sheets are provided, the electroluminescent device may be folded into an M shape.
Referring to fig. 1 and 9, in one or more embodiments, a controller 130 may be further included, and the controller 130 is electrically connected to the heating layer 125 of one of the heating sheets 120 for controlling heating of the heating layer 125, and the control principle may be similar to that of a conventional electric blanket.
The controller 130 may include a face cover 131, a bottom cover 133, a control PCB 135 and a power plug cord 137, the face cover 131 is fixedly connected to the bottom cover 133, and a cavity is defined by the face cover 131 and the bottom cover 133, the control PCB 135 is disposed in the cavity, the power plug cord 137 is electrically connected to the control PCB 135 and at least partially led out of the cavity, and the power plug cord 137 is used for connecting an external power source.
In some of these embodiments, the controller 130 is secured to one of the heating panels 120. For example, the heating sheet 120 may be provided with a notch corresponding to the controller 130, and the controller 130 is mounted at the notch. It is understood that the housing 110 is at least partially hollowed out at the notch to ensure the electrical connection between the heat generating layer 125 and the controller 130.
In other embodiments, the controller 130 may also be separately disposed from the housing 110 and the heating sheets 120, wherein the heating layer 125 of one heating sheet 120 is connected to the controller 130 through an external cable, and at this time, the controller 130 may be externally connected.
In other embodiments, the controller 130 is removably connected to one of the heating panels 120. In this case, the controller 130 may be externally connected to the heating sheet 120 as well as the heating sheet. For example, the cables connecting the heat generating layer 125 and the control PCB board 135 may have surplus cables, and the surplus cables may be folded in the cavity, so that the length of the cables may be ensured to be sufficient when the controller 130 is detached.
The control PCB board 135 is provided with a control circuit, which may be an existing heating element control circuit, for example, a heating element control circuit similar to an electric blanket.
In the above-described electroluminescent device 10, the positive electrode tab 1253 and the negative electrode tab 1255 are connected to both ends of the conductive heating element 1251 to form the heating layer 125, and then the heating layer 125 is fixed between the first substrate 121 and the second substrate 123, so that the conductive heating element 1251 can be completely hidden between the first substrate 121 and the second substrate 123, and even if the conductive heating element 1251 is overheated, dangerous disasters such as spontaneous combustion cannot be caused. Particularly, the conductive heating elements 1251 are connected in parallel, and the heating layers 125 of the plurality of heating sheets 120 are connected in parallel, so that the electric heating device 10 can work at a lower voltage, thereby further avoiding overheating and enhancing the power consumption safety of the electric heating device 10.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An electric heating device is characterized by comprising a shell and at least two heating sheets, wherein the heating sheets are arranged in the shell, two adjacent heating sheets are arranged at intervals, so that the shell can be folded at the interval between the two adjacent heating sheets, each heating sheet comprises a first substrate, a second substrate and a heating layer, wherein,
the heating layer is arranged on the first substrate, and the second substrate is arranged on the heating layer, so that the heating layer is fixed between the first substrate and the second substrate;
the heating layer comprises at least one electric conduction heating element, a positive electrode plate and a negative electrode plate, the electric conduction heating element comprises a first end and a second end which are oppositely arranged, the positive electrode plate is arranged at the first end of the electric conduction heating element and is electrically connected with the electric conduction heating element, and the negative electrode plate is arranged at the second end of the electric conduction heating element and is electrically connected with the electric conduction heating element;
the conductive heating bodies are connected in parallel, the positive electrode plates of two adjacent heating sheets are electrically connected with each other, the negative electrode plates of two adjacent heating sheets are electrically connected with each other, and the heating layers of the heating sheets are connected in parallel.
2. An electroluminescent device according to claim 1, wherein the heating sheet is fixedly attached to the housing.
3. An electroluminescent device according to claim 1, wherein the first and second substrates are made of FR-4 epoxy board.
4. The device of claim 3, wherein the positive electrode sheet and the negative electrode sheet are at least partially embedded in the first substrate or the second substrate, and the conductive heater is made of conductive ink, graphene material or carbon crystal material and is formed on the first substrate or the second substrate by coating printing; or
The conductive heating body is made of carbon fiber paper and is formed on the first substrate or the second substrate in a hot stamping mode.
5. The device according to claim 4, wherein the positive electrode sheet and the negative electrode sheet are flush with the end surface of the first substrate or the second substrate after the positive electrode sheet and the negative electrode sheet are fixed.
6. The device of claim 3, wherein the positive electrode sheet and the negative electrode sheet are provided with a conductive interface, the first substrate or the second substrate is provided with a first through groove and a second through groove, the first through groove is arranged along a direction in which a length of the positive electrode sheet or the negative electrode sheet extends, the conductive interface is connected to the outside through the first through groove, the second through groove is arranged along a thickness direction of the first substrate or the second substrate and penetrates through the first substrate or the second substrate, the conductive interface is connected to the outside through the second through groove, and the conductive interfaces of the positive electrode sheets of two adjacent heating sheets and the conductive interfaces of the negative electrode sheets of two adjacent heating sheets are connected through cables, so that the adjacent heating sheets are electrically connected.
7. An electroluminescent device according to claim 6, wherein the conductive interface is a block structure provided with two through holes communicating with each other, one of the through holes is a screw hole, a screw is fixed to the conductive interface through the second through slot, thereby fixing the cable to the conductive interface, and the cable is electrically connected to the positive electrode sheet or the negative electrode sheet through the conductive interface when fixed.
8. An electroluminescent device according to claim 1, wherein only one of the conductive heat-generating bodies is provided per one of the heating sheets.
9. An electric heating device as claimed in claim 1, wherein each of said heating sheets includes a plurality of said electric conductive heating elements, and the plurality of electric conductive heating elements of the same heating sheet are connected to the same positive electrode sheet and the same negative electrode sheet.
10. An electroluminescent device according to claim 1, wherein the heating sheet is provided in two pieces, the electroluminescent device being folded in a V-shape; or
The heating sheet is provided with three sheets, and the electric heating device is folded into an N shape or a concave shape; or
The heating sheet is provided with four sheets, and the electric heating device is folded into an M shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921398620.XU CN210469766U (en) | 2019-08-27 | 2019-08-27 | Electric heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921398620.XU CN210469766U (en) | 2019-08-27 | 2019-08-27 | Electric heating device |
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| CN210469766U true CN210469766U (en) | 2020-05-05 |
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| CN201921398620.XU Active CN210469766U (en) | 2019-08-27 | 2019-08-27 | Electric heating device |
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| CN111609454A (en) * | 2020-05-08 | 2020-09-01 | 安徽宇航派蒙健康科技股份有限公司 | Electric heating picture and preparation method thereof |
| CN111654929A (en) * | 2020-05-08 | 2020-09-11 | 安徽宇航派蒙健康科技股份有限公司 | Graphene heating body for electric heating picture and preparation method thereof |
| CN111669846A (en) * | 2020-06-11 | 2020-09-15 | 安徽宇航派蒙健康科技股份有限公司 | Preparation method of graphene electrothermal film for floor heating |
| CN111712001A (en) * | 2020-06-11 | 2020-09-25 | 安徽宇航派蒙健康科技股份有限公司 | Graphite alkene electric heat membrane for warm up |
| WO2022021622A1 (en) * | 2020-07-30 | 2022-02-03 | 深圳市联奕实业有限公司 | Foldable warmer assembly |
| US11558935B2 (en) | 2021-06-07 | 2023-01-17 | Calefact Limited | Flexible heating device and methods of manufacture and use of same |
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2019
- 2019-08-27 CN CN201921398620.XU patent/CN210469766U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111609454A (en) * | 2020-05-08 | 2020-09-01 | 安徽宇航派蒙健康科技股份有限公司 | Electric heating picture and preparation method thereof |
| CN111654929A (en) * | 2020-05-08 | 2020-09-11 | 安徽宇航派蒙健康科技股份有限公司 | Graphene heating body for electric heating picture and preparation method thereof |
| CN111609454B (en) * | 2020-05-08 | 2022-04-08 | 安徽宇航派蒙健康科技股份有限公司 | Electric heating picture and preparation method thereof |
| CN111654929B (en) * | 2020-05-08 | 2022-07-29 | 安徽宇航派蒙健康科技股份有限公司 | Graphene heating body for electric heating picture and preparation method thereof |
| CN111669846A (en) * | 2020-06-11 | 2020-09-15 | 安徽宇航派蒙健康科技股份有限公司 | Preparation method of graphene electrothermal film for floor heating |
| CN111712001A (en) * | 2020-06-11 | 2020-09-25 | 安徽宇航派蒙健康科技股份有限公司 | Graphite alkene electric heat membrane for warm up |
| WO2022021622A1 (en) * | 2020-07-30 | 2022-02-03 | 深圳市联奕实业有限公司 | Foldable warmer assembly |
| US11558935B2 (en) | 2021-06-07 | 2023-01-17 | Calefact Limited | Flexible heating device and methods of manufacture and use of same |
| US11849511B2 (en) | 2021-06-07 | 2023-12-19 | Calefact Limited | Flexible heating device and method of making same |
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