Coated electrode contact device and electrocaloric panel

By employing a design that uses deformable elements within the casing to elastically contact the positive and negative electrodes of the coating on the graphene heating panel, the problem of easy damage to electrode connections is solved, enabling fast and stable electrode connection and improving electrode lifespan and ease of installation.

CN224502404UActive Publication Date: 2026-07-14
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Filing Date
2025-08-19
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

The electrode connection method of existing graphene heating panels is prone to damaging the coating. Changes in contact pressure during installation or disassembly affect the stability of electrical connection and conductivity efficiency. Frequent operation will also shorten the lifespan of the electrodes.

Method used

The design employs a first and second deformation element within the housing to elastically contact and electrically connect with the positive and negative electrodes of the electric heating panel coating, respectively. This simplifies the design and provides a quick, non-destructive assembly and disassembly process as well as a stable electrode connection scheme. The structure comprises a housing, first and second electrical connection elements, a connector, and a deformation element.

Benefits of technology

It enables rapid and non-destructive assembly and disassembly of electrode connections, ensuring the stability and conductivity of electrical connections, extending the service life of electrodes, and improving installation convenience and circuit reliability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a kind of coating electrode electrical connection device and electric heating panel.The device is detachably connected with electric heating panel by shell, first electrical connection piece and second electrical connection piece are respectively extended out of shell for external plug positive and negative pole insertion.The first deformation piece connects the first electrical connection piece with the first insertion piece, and the second deformation piece connects the second electrical connection piece with the second insertion piece.Two deformation pieces respectively and the positive and negative electrode coating of electric heating panel are elastically abutted and connected, realize lossless installation.Insertion piece can extend out of shell to form parallel insertion interface, support adjacent panel electrical connection;Deformation piece adopts spring leaf with elastic protrusion or wave spring leaf structure, to ensure contact reliability.Electric heating panel with supporting contains graphene heating layer and positive and negative electrode coating, shell is provided with suspension groove to cooperate wall surface nail to realize quick installation.The scheme solves the problem that traditional electrode connection needs prefabricated thread hole, is easy to damage coating, contact unstable, has the advantages of convenient disassembly and assembly, contact reliable, flexible expansion.
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Description

Technical Field

[0001] This utility model relates to the field of electric heating device technology, and in particular to a coated electrode connection device for a graphene heating panel and an electric heating panel including the structure. Background Technology

[0002] Graphene heating panels are widely used in building heating and industrial drying due to their excellent properties such as high efficiency, uniformity, and low-temperature radiant heating. Especially in scenarios such as wall drying, graphene heating panels demonstrate enormous application potential due to their advantages of being thin, lightweight, customizable, and having high thermal efficiency.

[0003] The core heating layer of this type of electric heating panel is usually a graphene coating or a graphene-containing composite material coating. Its positive and negative poles are energized by setting a conductive coating, i.e. an electrode coating, in the edge area of ​​the panel.

[0004] Currently, the mainstream method for providing power to these types of panels is to use metal connectors with contact plates, which are directly pressed and fixed to the electrode coating area of ​​the panel using screws or other fasteners. While this method is simple in structure, it requires repeated tightening and loosening of the fasteners during installation or disassembly. This operation can easily cause physical damage to the electrode coating itself or its surrounding area. This risk of damage is exponentially increased, especially in situations where the contact device needs frequent replacement or maintenance.

[0005] During repeated tightening and loosening of fasteners, the contact pressure between the contact plate and the coated electrode may change, or even become loose, affecting the stability and conductivity of the electrical connection and shortening the effective service life of the electrode coating and the contact components. Utility Model Content

[0006] The purpose of this utility model is to provide a coated electrode connection device and an electric heating panel. When the housing is connected to the electric heating panel, the first deformation member and the second deformation member can elastically abut against and electrically connect with the positive and negative electrodes of the coating of the electric heating panel, respectively, so as to realize a fast, non-destructive, and stable electrode connection solution.

[0007] To achieve the above objectives, this utility model provides a coated electrode connection device, comprising:

[0008] A housing for detachable connection with an electric heating panel;

[0009] A first contact element is disposed inside the housing, with one end extending outside the housing. The portion of the first contact element located outside the housing is used for positive terminal insertion of an external plug.

[0010] The second contact element is disposed inside the housing, with one end extending out of the housing. The portion of the second contact element located outside the housing is used for the negative terminal of the external plug.

[0011] A first connector is disposed inside the housing;

[0012] The second connector is disposed inside the housing;

[0013] A first deformable element is disposed inside the housing, with its two ends connected to the first electrical connector and the first plug-in connector, respectively, and the first deformable element is electrically connected to the first electrical connector.

[0014] The second deformation component is disposed inside the housing, and its two ends are respectively connected to the second electrical connector and the second plug-in component, and the second deformation component is electrically connected to the second electrical connector.

[0015] When the housing is connected to the electric heating panel, the first deformable element elastically abuts against and is electrically connected to the positive electrode of the coating of the electric heating panel, and the second deformable element elastically abuts against and is electrically connected to the negative electrode of the coating of the electric heating panel.

[0016] Furthermore, as a more preferred embodiment of this utility model, one end of the first connector and the second connector respectively extends out of the housing and are arranged in parallel;

[0017] The first connector and the second connector are electrically connected to the first deformable element and the second deformable element, respectively. The portions extending out of the housing are used for the positive and negative terminals of the external plug, and for electrical connection to the adjacent electric heating panel via a wire with a plug.

[0018] Furthermore, as a more preferred embodiment of the present invention, the first deformable member includes a compression spring, the compression spring having an elastic protrusion in the middle, the two ends of the compression spring being rotatably connected to the first electrical connector and the first plug-in connector respectively, and the end of the elastic protrusion being used to abut against and electrically connect to the positive electrode of the coating of the electric heating panel.

[0019] Furthermore, as a more preferred embodiment of this utility model, the extended portions of the first and second electrical connectors are rod-shaped and arranged in parallel, so that the positive and negative poles of the external female plug can be simultaneously adapted and plugged into the rod-shaped portions of the first and second electrical connectors.

[0020] Furthermore, as a more preferred embodiment of the present invention, the housing includes a body, a first insertion limiting part is provided on one side of the body, an insertion window is provided inside the first insertion limiting part, and the extended portions of the first electrical contact and the second electrical contact are located within the insertion window.

[0021] Furthermore, as a more preferred embodiment of the present invention, the portions of the first and second connectors extending out of the housing are cylindrical and arranged in parallel, so that the positive and negative terminals of the external male plug can be simultaneously adapted and plugged into the cylindrical portions of the first and second connectors.

[0022] Furthermore, as a more preferred embodiment of the present invention, the housing includes a body, and a second insertion limiting portion is provided on one side of the body. The cylindrical portions of the first insertion member and the second insertion member are embedded in the second insertion limiting portion, and their ends protrude from the surface of the second insertion limiting portion.

[0023] Furthermore, as a more preferred embodiment of this utility model, the first electrical connector, the second electrical connector, the first plug-in connector, and the second plug-in connector are arranged parallel to each other and extend along one side of the housing;

[0024] The first deformation component and the second deformation component adopt a wave-shaped spring sheet structure;

[0025] The first deformable member and the second deformable member are arranged parallel to and offset from each other, so that the first or second electrical contact member passes through the gap of the wave-shaped spring sheet structure.

[0026] Furthermore, as a more preferred embodiment of the present invention, at least one end of the housing is provided with at least one wire clamp portion, the at least one wire clamp portion being used to clamp the wire.

[0027] Based on the same inventive concept, this utility model also provides an electric heating panel, including: a graphene heating panel, wherein the surface of the graphene heating panel is provided with a positive electrode contact coating and a negative electrode contact coating.

[0028] As described above, the first and second deformation components of the coating electrode connection device are elastically contacted and electrically connected to the positive and negative electrode connection coatings, respectively; the housing of the coating electrode connection device is provided with a hanging groove, which is used to hang on a wall nail. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0030] Figure 1 This is a three-dimensional structural diagram of the coated electrode connection device in this embodiment.

[0031] Figure 2 This is a three-dimensional schematic diagram showing the installation of the coated electrode connection device in this embodiment.

[0032] Figure 3 This is a three-dimensional structural diagram of the electric heating panel in this embodiment.

[0033] Figure label:

[0034] 1-Shell, 11-Body, 12-First insertion limiting part, 121-Insertion window, 13-Second insertion limiting part, 14-Suspension groove, 15-Wire clamp part, 2-First electrical contact part, 21-Rod-shaped extension part, 3-Second electrical contact part, 4-First insertion part, 41-Cylindrical extension part, 5-Second insertion part, 6-First deformation part, 61-Elastic protrusion part, 7-Second deformation part, 8-Graphene heating panel, 81-Positive electrode electrical contact coating, 82-Negative electrode electrical contact coating, 83-Suspension shell. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0037] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0039] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0040] Example

[0041] This embodiment aims to address the problems in the prior art where electrode connections require pre-drilled threaded holes, require easily damaged coatings, and suffer from poor contact reliability. Therefore, referring to... Figures 1-3 As shown, this embodiment provides a coated electrode connection device and an electric heating panel. When the housing 1 is connected to the electric heating panel, the first deformation member 6 and the second deformation member 7 can respectively elastically abut against and electrically connect with the positive and negative electrodes of the coating of the electric heating panel, which can realize a fast, non-destructive, and stable electrode connection solution.

[0042] Reference Figure 1 As shown, a coated electrode connection device includes a housing 1, a first connection element 2, a second connection element 3, a first connector 4, a second connector 5, a first deformation element 6, and a second deformation element 7.

[0043] The housing 1 is used for detachable connection with the electric heating panel;

[0044] The first electrical contact 2 is disposed inside the housing 1, with one end extending out of the housing 1. The portion of the first electrical contact 2 located outside the housing 1 is used for the positive terminal of the external plug.

[0045] The second electrical connector 3 is disposed inside the housing 1, with one end extending out of the housing 1. The portion of the second electrical connector 3 located outside the housing 1 is used for the negative terminal of the external plug.

[0046] The first connector 4 is disposed inside the housing 1;

[0047] The second connector 5 is disposed inside the housing 1;

[0048] The first deformable element 6 is disposed inside the housing 1, and its two ends are respectively connected to the first electrical connector 2 and the first plug-in element 4, and the first deformable element 6 is electrically connected to the first electrical connector 2.

[0049] The second deformable element 7 is disposed inside the housing 1, and its two ends are respectively connected to the second electrical connector 3 and the second plug-in element 5, and the second deformable element 7 is electrically connected to the second electrical connector 3.

[0050] When the housing 1 is connected to the electric heating panel, the first deformable element 6 elastically abuts and is electrically connected to the positive electrode of the coating on the electric heating panel, and the second deformable element 7 elastically abuts and is electrically connected to the negative electrode of the coating on the electric heating panel. This coating electrode connection device design makes installation and disassembly simple and quick. The design of the housing 1 ensures a stable connection with the electric heating panel while facilitating user replacement or maintenance. The first connecting element 2 and the second connecting element 3 are respectively used for plugging into the positive and negative terminals of the external plug, ensuring accurate current transmission. The first plug-in element 4 and the second plug-in element 5 are located inside the housing 1, fixing and supporting the other ends of the first deformable element 6 and the second deformable element 7.

[0051] Reference Figures 1-2 As shown, in some embodiments, one end of the first connector 4 and the second connector 5 extends out of the housing 1 and are arranged in parallel.

[0052] The first connector 4 and the second connector 5 are electrically connected to the first deformable element 6 and the second deformable element 7, respectively. The portions extending out of the housing 1 are used for the positive and negative terminals of the external plug, facilitating electrical connection to adjacent electric heating panels via wires with plugs. This design simplifies the electrical connection process and improves the flexibility of connections between electric heating panels. The parallel arrangement of the first connector 4 and the second connector 5 extending out of the housing 1 ensures stability and accuracy during connection, preventing circuit failures caused by misalignment. Simultaneously, this design allows users to easily connect multiple electric heating panels in series or parallel through simple plugging and unplugging operations, greatly improving installation convenience and efficiency. Furthermore, the electrical connection between the first connector 4 and the second connector 5 and the first deformable element 6 and the second deformable element 7 ensures smooth current transmission, guaranteeing the normal operation of the electric heating panels.

[0053] Reference Figures 1-2 As shown, in some embodiments, the first deformable element 6 includes a compression spring with an elastic protrusion 61 in the middle. Both ends of the compression spring are rotatably connected to the first electrical connector 2 and the first plug-in connector 4, respectively. The end of the elastic protrusion 61 is used to abut against and electrically connect to the positive electrode of the coating on the electric heating panel. This design allows the compression spring to adaptively adjust to minor unevenness on the surface of the electric heating panel, ensuring the stability and reliability of the electrical connection. The rotatable connection design allows the compression spring to deform to a certain extent when subjected to external force, thereby absorbing and dispersing stress.

[0054] Reference Figures 1-2As shown, in some embodiments, the extended portions of the first contact 2 and the second contact 3 are rod-shaped and arranged in parallel, so that the positive and negative terminals of the external female plug can be simultaneously adapted and inserted into the rod-shaped portions of the first contact 2 and the second contact 3. This design improves the convenience of insertion and also ensures the stability and accuracy of insertion. The rod-shaped design allows the external female plug to be firmly fixed to the first contact 2 and the second contact 3, avoiding circuit failures caused by loose insertion. At the same time, the parallel arrangement of the first contact 2 and the second contact 3 allows the positive and negative terminals of the external female plug to be easily aligned and inserted, greatly improving insertion efficiency.

[0055] Reference Figures 1-2 As shown, in some embodiments, the housing 1 includes a body 11. A first insertion limiting part 12 is provided on one side of the body 11. An insertion window 121 is provided inside the first insertion limiting part 12. The extended portions of the first connector 2 and the second connector 3 are located within the insertion window 121. This design effectively protects the exposed portions of the first connector 2 and the second connector 3, preventing short circuits or electric shock risks caused by accidental contact. The insertion window 121 is adapted to ensure that the external female plug can smoothly enter and exit, while also fitting tightly against the rod-shaped portions of the first connector 2 and the second connector 3, further enhancing the stability and safety of the circuit connection. In addition, the first insertion limiting part 12 also serves as a guide, helping the positive and negative poles of the external female plug to accurately align and insert into the first connector 2 and the second connector 3, improving the smoothness of the insertion process and the user experience.

[0056] Reference Figures 1-2 As shown, in some embodiments, the portions of the first connector 4 and the second connector 5 extending out of the housing 1 are cylindrical and arranged in parallel, so that the positive and negative terminals of the external male plug can be simultaneously adapted to and inserted into the cylindrical portions of the first connector 4 and the second connector 5. The smooth inner wall of the cylindrical portion reduces frictional resistance during insertion, making the insertion process smoother. Furthermore, the parallel arrangement of the first connector 4 and the second connector 5 ensures that the positive and negative terminals of the external male plug can be accurately aligned and inserted.

[0057] Reference Figures 1-2 As shown, in some embodiments, the housing 1 includes a body 11, and a second insertion limiting part 13 is provided on one side of the body 11. The cylindrical portions of the first insertion member 4 and the second insertion member 5 are embedded in the second insertion limiting part 13, and their ends protrude from the surface of the second insertion limiting part 13. This solution not only further stabilizes the position of the first insertion member 4 and the second insertion member 5, preventing them from loosening or shifting during use, but also provides a clearer positioning guide for the insertion of the external male plug.

[0058] Reference Figures 1-2As shown, in some embodiments, the first electrical connector 2, the second electrical connector 3, the first connector 4 and the second connector 5 are arranged parallel to each other and extend along one side of the housing 1;

[0059] The first deformation component 6 and the second deformation component 7 adopt a wave-shaped spring sheet structure;

[0060] The first deformable element 6 and the second deformable element 7 are arranged parallel and staggered so that when the first contact element 2 or the second contact element 3 passes through the gap of the corrugated spring sheet structure, it can be elastically clamped and fixed by the corrugated spring sheet structure. The arrangement of the first contact element 2, the second contact element 3, the first connector 4, and the second connector 5 being parallel to each other and extending along one side of the housing 1 makes the overall structure more compact and facilitates installation and maintenance. The corrugated spring sheet structure absorbs and alleviates stress caused by insertion or external vibration to a certain extent, improving the durability and reliability of the entire electric heating panel. The parallel and staggered arrangement of the first deformable element 6 and the second deformable element 7 not only optimizes the spatial layout but also avoids mutual interference, further enhancing the compactness and practicality of the structure.

[0061] Reference Figures 1-2 As shown, in some embodiments, at least one end of the housing 1 is provided with at least one wire clamp 15, which is used to clamp the wire to ensure a secure connection between the wire and the housing 1 and to prevent the wire from loosening or falling off during use. At the same time, the material of the wire clamp 15 has a certain degree of elasticity, which can provide a certain cushioning when clamping the wire and avoid damage to the wire. This improves the safety and reliability of the entire electrode connection device and also brings convenience to the user.

[0062] Reference Figures 1-3 As shown, this embodiment also provides an electric heating panel, including a graphene heating panel 8 and a coated electrode connection device as described above. Exemplarily, the connection method between the coated electrode connection device and the graphene heating panel 8 can be, but is not limited to, a snap-fit ​​connection, adhesive bonding, or bolt connection.

[0063] The surface of the graphene heating panel 8 is provided with a positive electrode contact coating 81 and a negative electrode contact coating 82.

[0064] The first deformable element 6 and the second deformable element 7 of the coated electrode connection device elastically abut and are electrically connected to the positive and negative electrode connection coatings, respectively. The housing 1 of the coated electrode connection device is provided with a hanging groove 14 for hanging on the wall. The electric heating panel can be stably and firmly installed on the wall, which is convenient for both installation and disassembly. In addition, the graphene heating panel 8 has excellent thermal conductivity and uniform heating effect, which can quickly and evenly heat the space and improve heating efficiency. The elastic abutment design between the positive and negative electrode connection coatings and the coated electrode connection device not only ensures a good electrical connection, but also adapts to thermal expansion and contraction to a certain extent, improving the stability and reliability of the electrical connection. The entire electric heating panel structure is reasonably designed, which is both practical and safe.

[0065] It should be added that the electric heating panel also has a hanging shell 83, the thickness of which is approximately the same as the shell 1 of the coated electrode connection device. The hanging shell 83 also has hanging grooves 14, allowing the electric heating panel to be balanced and suspended from the wall. This design ensures the electric heating panel is securely hung on the wall and also simplifies and speeds up the installation process. The cooperation between the hanging grooves 14 and the hanging nails achieves precise positioning, avoiding deviations during installation and further improving installation efficiency and accuracy. Simultaneously, the hanging shell 83 not only enhances the overall structural strength of the electric heating panel but also provides additional protection, extending its service life. Furthermore, the fact that the hanging shell 83 and the shell 1 of the coated electrode connection device have approximately the same thickness makes the entire electric heating panel visually more unified and harmonious, improving its aesthetics. For example, the hanging grooves 14 have inverted V-shaped openings for adaptive and stable suspension.

[0066] The electronic devices provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A coated electrode connection device, characterized in that, include: A housing for detachable connection with an electric heating panel; A first contact element is disposed inside the housing, with one end extending outside the housing. The portion of the first contact element located outside the housing is used for positive terminal insertion of an external plug. The second contact element is disposed inside the housing, with one end extending out of the housing. The portion of the second contact element located outside the housing is used for the negative terminal of the external plug. A first connector is disposed inside the housing; The second connector is disposed inside the housing; A first deformable element is disposed inside the housing, with its two ends connected to the first electrical connector and the first plug-in connector, respectively, and the first deformable element is electrically connected to the first electrical connector. The second deformation component is disposed inside the housing, and its two ends are respectively connected to the second electrical connector and the second plug-in component, and the second deformation component is electrically connected to the second electrical connector. When the housing is connected to the electric heating panel, the first deformable element elastically abuts against and is electrically connected to the positive electrode of the coating of the electric heating panel, and the second deformable element elastically abuts against and is electrically connected to the negative electrode of the coating of the electric heating panel.

2. The coated electrode connection device according to claim 1, characterized in that, One end of the first connector and the second connector respectively extends out of the housing and are arranged in parallel. The first connector and the second connector are electrically connected to the first deformable element and the second deformable element, respectively. The portions extending out of the housing are used for the positive and negative terminals of the external plug, and for electrical connection to the adjacent electric heating panel via a wire with a plug.

3. The coated electrode connection device according to claim 1, characterized in that, The first deformable component includes a compression spring, the compression spring has an elastic protrusion in the middle, the two ends of the compression spring are rotatably connected to the first electrical connector and the first plug-in connector respectively, and the end of the elastic protrusion is used to abut against and electrically connect to the positive electrode of the coating of the electric heating panel.

4. The coated electrode connection device according to claim 1, characterized in that, The extended portions of the first and second electrical connectors are rod-shaped and arranged in parallel so that the positive and negative terminals of the external female plug can be simultaneously adapted and plugged into the rod-shaped portions of the first and second electrical connectors.

5. The coated electrode connection device according to claim 4, characterized in that, The housing includes a body, and a first insertion limiting part is provided on one side of the body. An insertion window is provided inside the first insertion limiting part, and the extended parts of the first electrical connector and the second electrical connector are located inside the insertion window.

6. The coated electrode connection device according to claim 2, characterized in that, The portions of the first and second connectors extending out of the housing are cylindrical and arranged in parallel, so that the positive and negative terminals of the external male plug can be simultaneously adapted to and plugged into the cylindrical portions of the first and second connectors.

7. The coated electrode connection device according to claim 6, characterized in that, The housing includes a body, and a second insertion limiting part is provided on one side of the body. The cylindrical portions of the first insertion member and the second insertion member are embedded in the second insertion limiting part, and their ends are exposed on the surface of the second insertion limiting part.

8. The coated electrode connection device according to claim 1, characterized in that, The first electrical connector, the second electrical connector, the first connector, and the second connector are arranged parallel to each other and extend along one side of the housing; The first deformation component and the second deformation component adopt a wave-shaped spring sheet structure; The first deformable member and the second deformable member are arranged parallel to and offset from each other, so that the first or second electrical contact member passes through the gap of the wave-shaped spring sheet structure.

9. The coated electrode connection device according to claim 1, characterized in that, At least one end of the housing is provided with at least one wire clamp, which is used to clamp the wire.

10. An electric heating panel, characterized in that, include A graphene heating panel, wherein the surface of the graphene heating panel is provided with a positive electrode contact coating and a negative electrode contact coating; The coating electrode connection device as described in any one of claims 1-9, wherein the first deformation member and the second deformation member of the coating electrode connection device are elastically abutting and electrically connected to the positive and negative electrode connection coatings, respectively; The housing of the coated electrode connection device is provided with a hanging groove, which is used to hang the nails on the wall.